Merge branch 'main' into fix/omp-session-discovery

CHANGELOG.md

@@ -2,6 +2,17 @@
 
 ## Unreleased
 
+### Added
+- **Credit-metered ChatGPT workspaces (Business / Edu / Enterprise) now show their limit.** These plans report no rate-limit windows, so the admin-set monthly allowance from `spend_control.individual_limit` is shown as a "Monthly usage limit" bar in the desktop app and the menubar.
+
+### Added (CLI)
+- **Codex throughput tracking**: per-model Tok/s in the dashboard and report, active time excludes tool wait. (#805, thanks @ihearttokyo)
+- `codeburn sync push --attribution` (opt-in): sends git attribution spans — the session→commit correlation from `codeburn yield` (`codeburn.session.attribution` and `codeburn.commit` span types with normalized repo remote, commit SHAs, merged/reverted state, and PR links). Nothing new is sent without the flag; local-only repos and Windows filesystem paths are never emitted as repo identities, and sessions whose project path no longer resolves never inherit the push-time working directory's repo. See docs/sync/README.md "Git attribution".
+
+### Fixed (CLI)
+- **`--project` / `--exclude` now apply to the headline totals, not just the detail panels.** The durable headline unions the carry-forward daily cache with today's live parse, and the cached days were sliced to the requested provider but never to the requested project — so the Overview panel counted excluded projects while By Project / By Activity / By Model (built from the name-filtered parse) left them out, and the two could not be reconciled. Cost, calls, sessions and savings are now sliced out of the per-project day stats the cache has carried since v15. Tokens, models and categories have no per-project split in the cache, so under a project filter they come from the (project-filtered) live parse instead; cached days — or provider slices — carried from before v15 have no project split at all, so they cannot be attributed to a filtered project, and the terminal overview now states how much was set aside rather than folding it into the total. (#864)
+- **Codex parser corrections**: fork-replay no longer double-counts `patch_apply_end` and `mcp_tool_call_end`; `exec` is normalized to Bash; `custom_tool_call` events are handled; token_count lines larger than 32 KiB now parse exact token counts instead of estimating. Codex session cache bumps from v7 to v8 for a one-time re-parse. Only tool attribution changes for ordinary sessions, leaving their cost identical; sessions that logged an oversized token_count line are repriced from exact counts instead of an estimate. (#805)
+
 ### Fixed
 - Claude Desktop and Cowork sessions are discovered for Windows Microsoft Store (MSIX) installs. (#611)
 

README.md

@@ -1,5 +1,5 @@
 <p align="center">
-  <a href="https://claude.com/open-source-max"><img src="https://img.shields.io/badge/Claude_for_Open_Source-Recipient-da7756?style=for-the-badge&labelColor=1a1a1a" alt="Claude for Open Source Recipient" /></a>
+  <a href="https://claude.com/open-source-max"><img src="https://raw.githubusercontent.com/getagentseal/codeburn/main/assets/open-source-recipient.png" alt="Codex and Claude for Open Source Recipient" width="720" /></a>
 </p>
 
 <p align="center">

app/electron/main.test.ts

@@ -89,6 +89,12 @@ const ARGV_CASES: Array<{ channel: string; args: unknown[]; argv: string[] }> =
   { channel: 'codeburn:getOverview', args: ['30days', 'all', { from: '2026-07-01', to: '2026-07-11' }], argv: ['status', '--format', 'menubar-json', '--period', '30days', '--no-timeline', '--from', '2026-07-01', '--to', '2026-07-11'] },
   { channel: 'codeburn:getOverview', args: ['30days', 'all', undefined, 'claude-config:91dda17e8cf35193'], argv: ['status', '--format', 'menubar-json', '--period', '30days', '--no-timeline', '--claude-config-source', 'claude-config:91dda17e8cf35193'] },
   { channel: 'codeburn:getOverview', args: ['month', 'claude', { from: '2026-07-01', to: '2026-07-11' }, 'claude-desktop:980e1e488a654830'], argv: ['status', '--format', 'menubar-json', '--period', 'month', '--no-timeline', '--provider', 'claude', '--from', '2026-07-01', '--to', '2026-07-11', '--claude-config-source', 'claude-desktop:980e1e488a654830'] },
+  // Combined scope emits --scope combined; an explicit local scope is identical
+  // to the default (no flag). The CLI rejects --scope with --provider, so a
+  // provider passed alongside combined is dropped (the renderer forces 'all').
+  { channel: 'codeburn:getOverview', args: ['30days', 'all', undefined, undefined, undefined, 'combined'], argv: ['status', '--format', 'menubar-json', '--period', '30days', '--no-timeline', '--scope', 'combined'] },
+  { channel: 'codeburn:getOverview', args: ['30days', 'claude', undefined, undefined, undefined, 'combined'], argv: ['status', '--format', 'menubar-json', '--period', '30days', '--no-timeline', '--scope', 'combined'] },
+  { channel: 'codeburn:getOverview', args: ['30days', 'claude', undefined, undefined, undefined, 'local'], argv: ['status', '--format', 'menubar-json', '--period', '30days', '--no-timeline', '--provider', 'claude'] },
   { channel: 'codeburn:getModels', args: ['week', 'claude', true, { from: '2026-07-01', to: '2026-07-11' }], argv: ['models', '--format', 'json', '--period', 'week', '--provider', 'claude', '--by-task', '--from', '2026-07-01', '--to', '2026-07-11'] },
   { channel: 'codeburn:getYield', args: ['today', 'all', { from: '2026-07-01', to: '2026-07-11' }], argv: ['yield', '--format', 'json', '--period', 'today', '--from', '2026-07-01', '--to', '2026-07-11'] },
   { channel: 'codeburn:getSpendFlow', args: ['month', 'all', { from: '2026-07-01', to: '2026-07-11' }], argv: ['spend', '--format', 'flow-json', '--period', 'month', '--from', '2026-07-01', '--to', '2026-07-11'] },
@@ -212,6 +218,7 @@ describe('createBridgeHandlers (IPC input validation)', () => {
     { name: 'remove price override model that looks like a flag', channel: 'codeburn:removePriceOverride', args: ['--all'] },
     { name: 'claude config source that looks like a flag', channel: 'codeburn:getOverview', args: ['30days', 'all', undefined, '-rf'] },
     { name: 'claude config source with shell metacharacters', channel: 'codeburn:getOverview', args: ['30days', 'all', undefined, 'id; rm -rf'] },
+    { name: 'unknown scope', channel: 'codeburn:getOverview', args: ['30days', 'all', undefined, undefined, undefined, 'everything'] },
   ]
 
   it.each(REJECTIONS)('rejects $name with a bad-args envelope and never spawns', async ({ channel, args }) => {

app/electron/main.ts

@@ -165,6 +165,11 @@ function vConfigSource(source: string | null | undefined): string | null {
   if (!/^[A-Za-z0-9][A-Za-z0-9:_-]*$/.test(source)) throw new CliError('bad-args', 'invalid claude config source')
   return source
 }
+function vScope(scope: string | undefined): 'local' | 'combined' {
+  if (scope === 'combined') return 'combined'
+  if (scope === undefined || scope === 'local') return 'local'
+  throw new CliError('bad-args', 'invalid scope')
+}
 function vOutPath(outPath: string): string {
   if (outPath.startsWith('-') || !path.isAbsolute(outPath)) throw new CliError('bad-args', 'export path must be absolute')
   return outPath
@@ -269,19 +274,28 @@ export function createBridgeHandlers(deps: Deps = { spawnCli, spawnCliAction, re
   // The desktop never renders the granular timeline, so it always passes
   // --no-timeline (skips buildGranularHistory on every poll). The Swift menubar
   // omits the flag and keeps the timeline unchanged.
-  const buildOverviewArgs = (period: string, provider: string, range?: DateRange, configSource?: string | null): string[] => [
-    'status', '--format', 'menubar-json', '--period', vPeriod(period), '--no-timeline',
-    ...providerArgs(vProvider(provider)), ...rangeArgs(vRange(range)), ...configSourceArgs(vConfigSource(configSource)),
-  ]
+  //
+  // Combined scope aggregates paired-device usage: the CLI rejects --scope
+  // combined alongside --provider/--project/--exclude (paired devices report
+  // unfiltered usage), so the provider filter is dropped in that mode. The
+  // caller (renderer) forces provider='all' when combined, so nothing is lost.
+  const buildOverviewArgs = (period: string, provider: string, range?: DateRange, configSource?: string | null, scope?: string): string[] => {
+    const vScopeValue = vScope(scope)
+    return [
+      'status', '--format', 'menubar-json', '--period', vPeriod(period), '--no-timeline',
+      ...(vScopeValue === 'combined' ? ['--scope', 'combined'] : providerArgs(vProvider(provider))),
+      ...rangeArgs(vRange(range)), ...configSourceArgs(vConfigSource(configSource)),
+    ]
+  }
 
   // `background` (renderer prefetch only) drops this fetch to background priority
   // so it yields the CLI's run slots to any interactive poll or click. Optional
   // and defaulting to interactive, so an older preload that omits it is unchanged.
-  const getOverview: Handler = async (period: string, provider: string, range?: DateRange, configSource?: string | null, background?: boolean) => {
+  const getOverview: Handler = async (period: string, provider: string, range?: DateRange, configSource?: string | null, background?: boolean, scope?: string) => {
     coldStartBegan ??= Date.now()
     const priority: SpawnPriority | undefined = background ? 'background' : undefined
     try {
-      const args = buildOverviewArgs(period, provider, range, configSource)
+      const args = buildOverviewArgs(period, provider, range, configSource, scope)
       if (overviewWarmed) return { ok: true, value: await deps.spawnCli(args, priority ? { priority } : undefined) }
       const value = await deps.spawnCli(args, {
         timeoutMs: WARMUP_TIMEOUT_MS,

app/electron/preload.ts

@@ -20,7 +20,7 @@ async function invoke<T>(channel: string, ...args: unknown[]): Promise<T> {
 // renderer-side where `window.codeburn` is declared as CodeburnBridge.
 const bridge = {
   getQuota: (force?: boolean) => invoke('codeburn:getQuota', force),
-  getOverview: (period: string, provider: string, range?: DateRange, configSource?: string | null, background?: boolean) => invoke('codeburn:getOverview', period, provider, range, configSource, background),
+  getOverview: (period: string, provider: string, range?: DateRange, configSource?: string | null, background?: boolean, scope?: string) => invoke('codeburn:getOverview', period, provider, range, configSource, background, scope),
   getPlans: (period: string) => invoke('codeburn:getPlans', period),
   getActReport: () => invoke('codeburn:getActReport'),
   getModels: (period: string, provider: string, byTask: boolean, range?: DateRange) => invoke('codeburn:getModels', period, provider, byTask, range),

app/electron/quota/codex.test.ts

@@ -38,6 +38,153 @@ describe('Codex quota', () => {
     expect(quota.details).toHaveLength(1)
   })
 
+  // Shape captured from a live ChatGPT Enterprise workspace.
+  const enterpriseBody = {
+    plan_type: 'business',
+    rate_limit: null,
+    additional_rate_limits: null,
+    credits: { has_credits: false, unlimited: false, balance: null },
+    spend_control: {
+      reached: false,
+      individual_limit: {
+        source: 'workspace_spend_controls',
+        limit: '10000',
+        used: '3028.9909675121307',
+        remaining: '6971.009032487869',
+        used_percent: 30,
+        remaining_percent: 70,
+        reset_after_seconds: 441_896,
+        reset_at: 1_785_542_400,
+      },
+    },
+    rate_limit_reset_credits: { available_count: 0 },
+  }
+
+  it('surfaces the spend-control credit limit when there are no rate windows', () => {
+    const quota = decodeCodexUsage(enterpriseBody)
+    expect(quota.primary).toEqual({
+      label: 'Monthly usage limit · 3,029 / 10,000 credits',
+      percent: 0.3,
+      resetsAt: new Date(1_785_542_400 * 1000).toISOString(),
+    })
+    expect(quota.details).toEqual([quota.primary])
+    expect(quota.planLabel).toBe('Business')
+    expect(quota.footerLines).toEqual([])
+  })
+
+  it('keeps rate windows primary and appends the credit limit alongside them', () => {
+    const quota = decodeCodexUsage({
+      ...enterpriseBody,
+      rate_limit: { primary_window: { used_percent: 20, reset_at: 1_800_000_000, limit_window_seconds: 18_000 } },
+    })
+    expect(quota.primary?.label).toBe('5-hour')
+    expect(quota.details.map(row => row.label)).toEqual([
+      '5-hour',
+      'Monthly usage limit · 3,029 / 10,000 credits',
+    ])
+  })
+
+  it.each([
+    ['top level', (limit: unknown) => ({ individual_limit: limit })],
+    ['camelCase key', (limit: unknown) => ({ spend_control: { individualLimit: limit } })],
+    ['nested in rate_limit', (limit: unknown) => ({ rate_limit: { individual_limit: limit } })],
+  ])('reads the credit limit positioned at %s', (_name, wrap) => {
+    const quota = decodeCodexUsage(wrap({ limit: 10_000, used: 2500, used_percent: 25 }))
+    expect(quota.primary?.percent).toBe(0.25)
+    expect(quota.primary?.label).toBe('Monthly usage limit · 2,500 / 10,000 credits')
+  })
+
+  it('derives the percent from remaining_percent, then from used/limit', () => {
+    const fromRemaining = decodeCodexUsage({ spend_control: { individual_limit: { limit: 10_000, remaining_percent: 70 } } })
+    expect(fromRemaining.primary?.percent).toBeCloseTo(0.3)
+    expect(fromRemaining.primary?.label).toBe('Monthly usage limit · 3,000 / 10,000 credits')
+
+    const fromRatio = decodeCodexUsage({ spend_control: { individual_limit: { limit: 400, used: 100 } } })
+    expect(fromRatio.primary?.percent).toBeCloseTo(0.25)
+  })
+
+  it('ignores a spend control with no usable limit', () => {
+    for (const individual_limit of [{ limit: 0, used: 5 }, { limit: null }, { used_percent: 40 }, null]) {
+      const quota = decodeCodexUsage({ spend_control: { individual_limit } })
+      expect(quota.primary).toBeNull()
+      expect(quota.details).toEqual([])
+    }
+  })
+
+  it('renders no row when the allowance is known but the draw on it is not', () => {
+    const quota = decodeCodexUsage({ spend_control: { individual_limit: { limit: 10_000, reset_at: 1_785_542_400 } } })
+    expect(quota.primary).toBeNull()
+    expect(quota.details).toEqual([])
+  })
+
+  it('treats a blank numeric string as absent, not as zero', () => {
+    const quota = decodeCodexUsage({ spend_control: { individual_limit: { limit: '10000', used: '  ', used_percent: 30 } } })
+    expect(quota.primary?.label).toBe('Monthly usage limit · 3,000 / 10,000 credits')
+    expect(decodeCodexUsage({ spend_control: { individual_limit: { limit: '' } } }).primary).toBeNull()
+  })
+
+  it('marks a spent-out allowance as reached', () => {
+    const quota = decodeCodexUsage({
+      spend_control: { reached: true, individual_limit: { limit: 10_000, used: 10_000, used_percent: 100 } },
+    })
+    expect(quota.primary?.label).toBe('Monthly usage limit · 10,000 / 10,000 credits · limit reached')
+    expect(quota.primary?.percent).toBe(1)
+  })
+
+  it('keeps overage counts truthful while clamping the bar', () => {
+    const quota = decodeCodexUsage({ spend_control: { individual_limit: { limit: 10_000, used: 12_000, used_percent: 120 } } })
+    expect(quota.primary?.label).toBe('Monthly usage limit · 12,000 / 10,000 credits')
+    expect(quota.primary?.percent).toBe(1)
+  })
+
+  it('keeps the implied overage when only the percent is given', () => {
+    const quota = decodeCodexUsage({ spend_control: { individual_limit: { limit: 10_000, used_percent: 120 } } })
+    expect(quota.primary?.label).toBe('Monthly usage limit · 12,000 / 10,000 credits')
+    expect(quota.primary?.percent).toBe(1)
+  })
+
+  it('skips a garbage alias instead of letting it mask a valid one', () => {
+    const quota = decodeCodexUsage({
+      spend_control: { individual_limit: 'bad', individualLimit: { limit: 100, usedPercent: 25 } },
+    })
+    expect(quota.primary?.label).toBe('Monthly usage limit · 25 / 100 credits')
+    const perField = decodeCodexUsage({
+      spend_control: { individual_limit: { limit: 100, used_percent: 'bad', usedPercent: 25 } },
+    })
+    expect(perField.primary?.percent).toBe(0.25)
+  })
+
+  it('survives a reset timestamp beyond the Date range', () => {
+    const quota = decodeCodexUsage({ spend_control: { individual_limit: { limit: 100, used_percent: 10, reset_at: 9_000_000_000_000 } } })
+    expect(quota.primary?.resetsAt).toBeNull()
+    expect(quota.primary?.percent).toBe(0.1)
+  })
+
+  it('says so when the account is credit-metered but uncapped', () => {
+    const quota = decodeCodexUsage({ plan_type: 'business', credits: { has_credits: true, unlimited: true } })
+    expect(quota.footerLines).toEqual(['Credits · Unlimited'])
+    const capped = decodeCodexUsage({ credits: { unlimited: true }, spend_control: { individual_limit: { limit: 10_000, used_percent: 30 } } })
+    expect(capped.footerLines).toEqual([])
+  })
+
+  it('normalizes credit-based-pricing plan tiers', () => {
+    const label = (plan_type: string) => decodeCodexUsage({ plan_type }).planLabel
+    expect(label('enterprise_cbp_usage_based')).toBe('Enterprise')
+    expect(label('self_serve_business_usage_based')).toBe('Business')
+    expect(label('enterprise')).toBe('Enterprise')
+    expect(label('some_future_tier')).toBe('Some Future Tier')
+  })
+
+  it('labels a credit-settled balance in credits, not dollars', () => {
+    const inCredits = decodeCodexUsage({ credits: { has_credits: true, balance: 3410.4 } })
+    expect(inCredits.footerLines).toEqual(['Credits remaining · 3,410'])
+    const inDollars = decodeCodexUsage({ credits: { has_credits: false, balance: 3.5 } })
+    expect(inDollars.footerLines).toEqual(['Credits remaining · $3.50'])
+    // Thousands separators must match the menubar's en_US currency formatter.
+    const inDollarsLarge = decodeCodexUsage({ credits: { has_credits: false, balance: 12500 } })
+    expect(inDollarsLarge.footerLines).toEqual(['Credits remaining · $12,500.00'])
+  })
+
   it('returns disconnected without credentials', async () => {
     const fetchMock = vi.fn()
     const result = await fetchCodexQuota({ fetch: fetchMock, readFile: vi.fn(async () => null) })

app/electron/quota/codex.ts

@@ -133,10 +133,27 @@ function windowOf(value: unknown, override?: string): QuotaWindow | null {
   return { label: override ?? labelForSeconds(row.limit_window_seconds), percent, resetsAt: reset }
 }
 
+// chatgpt.com mixes encodings inside one payload. `Number('')` is 0, not NaN,
+// so blank is rejected or an absent `used` decodes as a confident zero.
+function num(value: unknown): number | null {
+  if (typeof value === 'string' && !value.trim()) return null
+  const parsed = typeof value === 'number' ? value : typeof value === 'string' ? Number(value.trim()) : NaN
+  return Number.isFinite(parsed) ? parsed : null
+}
+
+// Credit-based-pricing tiers arrive composite (`enterprise_cbp_usage_based`).
+function normalizePlanType(value: string): string {
+  return value
+    .replace(/[_-]usage[_-]based$/, '')
+    .replace(/^self[_-]serve[_-]/, '')
+    .replace(/[_-]cbp$/, '')
+    .replace(/[_-]cbp[_-]/g, '_')
+}
+
 function planLabel(value: unknown): string | null {
   if (typeof value !== 'string' || !value.trim()) return null
   const raw = value.trim()
-  const lower = raw.toLowerCase()
+  const lower = normalizePlanType(raw.toLowerCase())
   const known: Record<string, string> = {
     guest: 'Guest', free: 'Free', go: 'Go', plus: 'Plus', pro: 'Pro',
     prolite: 'Pro Lite', pro_lite: 'Pro Lite', 'pro-lite': 'Pro Lite',
@@ -146,6 +163,44 @@ function planLabel(value: unknown): string | null {
   return known[lower] ?? lower.replace(/(^|[_-])\w/g, match => match.replace(/[_-]/, ' ').toUpperCase())
 }
 
+// The admin-set monthly allowance, the only limit a credit-metered workspace
+// has. `spend_control` is the live position, the others forward-compat. `any`
+// because this walks six optional-chained hops, all validated by `num()`.
+function spendControlWindow(data: Record<string, any>): QuotaWindow | null {
+  // `find`/`num` per alias, not `??`: a non-null garbage value would stop `??`
+  // and mask a valid alias further down. Object-shaped garbage still wins the
+  // position, matching Swift, which likewise commits to the first that decodes.
+  const row = [
+    data.spend_control?.individual_limit,
+    data.spend_control?.individualLimit,
+    data.individual_limit,
+    data.individualLimit,
+    data.rate_limit?.individual_limit,
+    data.rate_limit?.individualLimit,
+  ].find(candidate => candidate && typeof candidate === 'object')
+  if (!row) return null
+  const limit = num(row.limit)
+  if (limit === null || limit <= 0) return null
+  const remainingPercent = num(row.remaining_percent) ?? num(row.remainingPercent)
+  const used = num(row.used)
+  const rawPercent = num(row.used_percent) ?? num(row.usedPercent)
+    ?? (remainingPercent === null ? null : 100 - remainingPercent)
+    ?? (used === null ? null : (used / limit) * 100)
+  if (rawPercent === null) return null
+  const percent = Math.min(1, Math.max(0, rawPercent / 100))
+  const resetRaw = num(row.reset_at) ?? num(row.resets_at) ?? num(row.resetsAt)
+  // Past 8.64e15 ms `toISOString()` throws RangeError.
+  const resetsAt = resetRaw !== null && resetRaw > 0 && resetRaw * 1000 <= 8.64e15
+    ? new Date(resetRaw * 1000).toISOString()
+    : null
+  // Unclamped percent, so a 120% draw still reports 12,000 of 10,000.
+  const spent = used ?? limit * Math.max(0, rawPercent) / 100
+  const round = (n: number) => Math.round(n).toLocaleString('en-US')
+  const reached = data.spend_control?.reached === true
+  const label = `Monthly usage limit · ${round(spent)} / ${round(limit)} credits`
+  return { label: reached ? `${label} · limit reached` : label, percent, resetsAt }
+}
+
 export function decodeCodexUsage(body: unknown): QuotaProvider {
   const data = body && typeof body === 'object' ? body as Record<string, any> : {}
   const primaryRaw = windowOf(data.rate_limit?.primary_window)
@@ -165,12 +220,21 @@ export function decodeCodexUsage(body: unknown): QuotaProvider {
       }
     }
   }
-  const rawBalance = data.credits?.balance
-  const balance = typeof rawBalance === 'number' ? rawBalance : typeof rawBalance === 'string' ? Number(rawBalance) : NaN
+  const credits = spendControlWindow(data)
+  if (credits) details.push(credits)
+  const balance = num(data.credits?.balance)
+  // Credit-settled accounts denominate in credits, so no currency symbol.
+  const hasCredits = data.credits?.has_credits === true
+  const footerLines: string[] = []
+  if (balance !== null && balance > 0) {
+    footerLines.push(`Credits remaining · ${hasCredits ? Math.round(balance).toLocaleString('en-US') : balance.toLocaleString('en-US', { style: 'currency', currency: 'USD' })}`)
+  }
+  // Uncapped on purpose, so a bar-less card does not read as a failed fetch.
+  if (!credits && data.credits?.unlimited === true) footerLines.push('Credits · Unlimited')
   return {
-    provider: 'codex', connection: 'connected', primary, details,
+    provider: 'codex', connection: 'connected', primary: primary ?? credits, details,
     planLabel: planLabel(data.plan_type),
-    footerLines: Number.isFinite(balance) && balance > 0 ? [`Credits remaining · $${balance.toFixed(2)}`] : [],
+    footerLines,
   }
 }
 

app/renderer/App.test.tsx

@@ -17,7 +17,7 @@ vi.stubGlobal('localStorage', {
 })
 
 const mocks = vi.hoisted(() => ({
-  getOverview: vi.fn<(period: string, provider: string, range?: DateRange, configSource?: string | null, background?: boolean) => Promise<MenubarPayload>>(),
+  getOverview: vi.fn<(period: string, provider: string, range?: DateRange, configSource?: string | null, background?: boolean, scope?: string) => Promise<MenubarPayload>>(),
   getSpendFlow: vi.fn<(period: string, provider: string, range?: DateRange) => Promise<SpendFlow>>(),
   getOptimizeReport: vi.fn<(period: string, provider: string, range?: DateRange) => Promise<OptimizeJsonReport>>(),
   getModels: vi.fn(),
@@ -273,6 +273,25 @@ describe('App shortcuts', () => {
     })
   })
 
+  it('drives combined-scope overview fetches and persists the Scope setting', async () => {
+    render(<App />)
+    await waitFor(() => expect(mocks.getOverview).toHaveBeenCalledWith('30days', 'all'))
+
+    fireEvent.keyDown(document, { key: ',', metaKey: true })
+    fireEvent.click(await screen.findByLabelText('Scope'))
+    fireEvent.click(await screen.findByRole('option', { name: 'Combined' }))
+
+    // Combined scope forces provider='all' and passes --scope combined (6th arg).
+    await waitFor(() => expect(mocks.getOverview).toHaveBeenCalledWith('30days', 'all', undefined, undefined, undefined, 'combined'))
+    expect(localStorage.getItem('codeburn.scope')).toBe('combined')
+  })
+
+  it('boots in combined scope from the persisted Scope setting', async () => {
+    localStorage.setItem('codeburn.scope', 'combined')
+    render(<App />)
+    await waitFor(() => expect(mocks.getOverview).toHaveBeenCalledWith('30days', 'all', undefined, undefined, undefined, 'combined'))
+  })
+
   it('builds the provider picker from providerDetails so display-name providers round-trip their internal id', async () => {
     // grok's display name is "Grok Build"; the picker must show the label but
     // send the internal id `grok` as --provider (which assertProvider accepts).

app/renderer/App.tsx

@@ -27,7 +27,7 @@ import { Compare } from './sections/Compare'
 import { Plans } from './sections/Plans'
 import { Settings, type SettingsPane } from './sections/Settings'
 import { SpendContent } from './sections/Spend'
-import type { DateRange, MenubarPayload, ModelReportRow, Period, TelemetryStatus } from './lib/types'
+import type { DateRange, MenubarPayload, ModelReportRow, Period, Scope, TelemetryStatus } from './lib/types'
 
 // Bucket raw dollar amounts before they leave the machine: telemetry carries
 // coarse ranges, never exact spend.
@@ -130,8 +130,8 @@ const STANDARD_PERIODS: Period[] = ['today', 'week', '30days', 'month', 'all', '
 // Instant-switch memo key for an overview result. Shared by the overview poll
 // and the provider prefetcher so the two never drift out of sync. Exported so
 // the prefetch-storm test can assert warmed keys survive between polls.
-export function overviewMemoKey(provider: string, period: Period, range: DateRange | null, configSource: string | null): string {
-  return `overview|${provider}|${period}|${range?.from ?? ''}-${range?.to ?? ''}|${configSource ?? ''}`
+export function overviewMemoKey(provider: string, period: Period, range: DateRange | null, configSource: string | null, scope: Scope = 'local'): string {
+  return `overview|${provider}|${period}|${range?.from ?? ''}-${range?.to ?? ''}|${configSource ?? ''}|${scope}`
 }
 
 // Prefetch pacing: wait a short idle after the first paint, then warm one
@@ -172,6 +172,15 @@ function persistConfigSource(id: string | null): void {
   } catch { /* storage can be unavailable */ }
 }
 
+/** Boot scope = the persisted dashboard Scope setting, else local. */
+function initialScope(): Scope {
+  try { return globalThis.localStorage?.getItem('codeburn.scope') === 'combined' ? 'combined' : 'local' } catch { return 'local' }
+}
+
+function persistScope(scope: Scope): void {
+  try { globalThis.localStorage?.setItem('codeburn.scope', scope) } catch { /* storage can be unavailable */ }
+}
+
 function providerName(provider: string): string {
   if (provider === 'all') return 'All providers'
   return provider
@@ -218,20 +227,27 @@ function AppMain() {
   const [detectedProviders, setDetectedProviders] = useState<Array<{ id: string; label: string }>>([])
   const [customRange, setCustomRange] = useState<DateRange | null>(null)
   const [claudeConfigSource, setClaudeConfigSource] = useState<string | null>(initialConfigSource)
+  const [scope, setScopeState] = useState<Scope>(initialScope)
   const [refreshToken, setRefreshToken] = useState(0)
   const [now, setNow] = useState(() => Date.now())
   const [, setCurrencyTick] = useState(0)
 
   // Preserve the 2/3-arg call shapes when no config is scoped so the CLI argv
   // stays flag-free; only add --claude-config-source once a config is picked.
+  // Combined scope aggregates paired-device usage; the CLI rejects it alongside
+  // a provider/config filter, so onScopeChange forces provider='all' and clears
+  // the config scope before this poll runs. Passing scope='local' produces the
+  // same flag-free argv as before, so local users are unaffected.
   const overview = usePolled<MenubarPayload>(
-    () => claudeConfigSource
+    () => scope === 'combined'
+      ? codeburn.getOverview(period, 'all', customRange ?? undefined, undefined, undefined, 'combined')
+      : claudeConfigSource
       ? codeburn.getOverview(period, provider, customRange ?? undefined, claudeConfigSource)
       : customRange
       ? codeburn.getOverview(period, provider, customRange)
       : codeburn.getOverview(period, provider),
-    [period, provider, customRange?.from, customRange?.to, claudeConfigSource],
-    { memoKey: overviewMemoKey(provider, period, customRange, claudeConfigSource) },
+    [period, provider, customRange?.from, customRange?.to, claudeConfigSource, scope],
+    { memoKey: overviewMemoKey(provider, period, customRange, claudeConfigSource, scope) },
   )
   const refreshOverview = overview.refresh
 
@@ -273,7 +289,7 @@ function AppMain() {
   // fails we still emit the snapshot, just without the model x category cross.
   const snapshotDayRef = useRef<string | null>(null)
   useEffect(() => {
-    if (!overview.data || provider !== 'all' || customRange || claudeConfigSource) return
+    if (!overview.data || provider !== 'all' || customRange || claudeConfigSource || scope !== 'local') return
     const today = localDateKey(new Date())
     if (snapshotDayRef.current === today) return
     snapshotDayRef.current = today
@@ -285,7 +301,7 @@ function AppMain() {
       } catch { /* degrade: emit the snapshot without per-model topCategory */ }
       trackEvent('usage_snapshot', usageSnapshotProps(payload, modelCategories))
     })()
-  }, [overview.data, provider, customRange, claudeConfigSource, period, trackEvent])
+  }, [overview.data, provider, customRange, claudeConfigSource, scope, period, trackEvent])
 
   useEffect(() => {
     let saved: string | null = null
@@ -360,7 +376,9 @@ function AppMain() {
   overviewBusyRef.current = overview.loading
   const warmedKeys = useRef<Set<string>>(new Set())
   useEffect(() => {
-    if (!ready || overview.data == null || customRange || claudeConfigSource) return
+    // Combined scope has no provider picker to warm — it always shows unfiltered
+    // all-device usage — so the per-provider prefetch is local-scope only.
+    if (!ready || overview.data == null || customRange || claudeConfigSource || scope !== 'local') return
     const targets = detectedProviders.map(entry => entry.id).filter(id => id !== provider)
     if (targets.length === 0) return
     let cancelled = false
@@ -391,7 +409,7 @@ function AppMain() {
     // `overview.data == null` (a boolean) gates on first-resolution without
     // re-running every poll; the data content itself is intentionally not a dep.
     // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [ready, period, provider, customRange, claudeConfigSource, detectedProviders, overview.data == null])
+  }, [ready, period, provider, customRange, claudeConfigSource, scope, detectedProviders, overview.data == null])
 
   useEffect(() => {
     const id = window.setInterval(() => setNow(Date.now()), 1000)
@@ -451,17 +469,22 @@ function AppMain() {
 
   // A Claude config scopes Claude usage only, so a non-Claude provider filter
   // would make the CLI reject the flag: reset it to 'all' first (a 'claude'
-  // filter is already compatible and is left alone).
+  // filter is already compatible and is left alone). Picking a config also
+  // implies a device-specific view, so drop combined scope back to local.
   const onConfigSelect = (id: string) => {
     const next = id || null
     if (next && provider !== 'all' && provider !== 'claude') setProvider('all')
+    if (next && scope === 'combined') { setScopeState('local'); persistScope('local') }
     setClaudeConfigSource(next)
     persistConfigSource(next)
   }
 
   // Symmetric direction: picking a non-Claude provider while a config is
-  // scoped would hit the same CLI rejection, so drop the config scope.
+  // scoped would hit the same CLI rejection, so drop the config scope. A
+  // specific provider filter is a device-specific view, so it also drops
+  // combined scope back to local (combined reports unfiltered usage).
   const onProviderSelect = (value: string) => {
+    if (value !== 'all' && scope === 'combined') { setScopeState('local'); persistScope('local') }
     if (claudeConfigSource && value !== 'all' && value !== 'claude') {
       setClaudeConfigSource(null)
       persistConfigSource(null)
@@ -469,6 +492,19 @@ function AppMain() {
     setProvider(value)
   }
 
+  // Combined scope reports unfiltered, all-provider usage across paired devices,
+  // so switching to it resets the provider filter and Claude-config scope (which
+  // the CLI would otherwise reject), mirroring the menubar's setMenubarScope.
+  const onScopeChange = (value: string) => {
+    const next: Scope = value === 'combined' ? 'combined' : 'local'
+    if (next === 'combined') {
+      if (provider !== 'all') setProvider('all')
+      if (claudeConfigSource) { setClaudeConfigSource(null); persistConfigSource(null) }
+    }
+    setScopeState(next)
+    persistScope(next)
+  }
+
   const claudeConfigs = overview.data?.claudeConfigs
   const providerOptions = [
     { value: 'all', label: 'All providers' },
@@ -478,7 +514,11 @@ function AppMain() {
   const activeConfigLabel = claudeConfigSource
     ? claudeConfigs?.options.find(option => option.id === claudeConfigSource)?.label ?? null
     : null
-  const scope = `${customRange ? rangeLabel(customRange) : PERIOD_LABELS[period]} · ${providerLabel}${activeConfigLabel ? ` · ${activeConfigLabel}` : ''}`
+  // Combined scope reports unfiltered all-device usage, so the caption reads
+  // "Combined" in place of the (forced-'all') provider label.
+  const scopeCaption = scope === 'combined'
+    ? `${customRange ? rangeLabel(customRange) : PERIOD_LABELS[period]} · Combined`
+    : `${customRange ? rangeLabel(customRange) : PERIOD_LABELS[period]} · ${providerLabel}${activeConfigLabel ? ` · ${activeConfigLabel}` : ''}`
 
   return (
     <Window>
@@ -494,12 +534,12 @@ function AppMain() {
         {section === 'plans' ? (
           <Plans period={period} refreshToken={refreshToken} onNavigate={navigate} ready={ready} />
         ) : section === 'settings' ? (
-          <Settings period={period} refreshToken={refreshToken} onNavigate={navigate} initialPane={settingsPane} claudeConfigs={claudeConfigs} claudeConfigSource={claudeConfigSource} onConfigMutated={onConfigMutated} />
+          <Settings period={period} refreshToken={refreshToken} onNavigate={navigate} initialPane={settingsPane} claudeConfigs={claudeConfigs} claudeConfigSource={claudeConfigSource} onConfigMutated={onConfigMutated} scope={scope} onScopeChange={onScopeChange} />
         ) : (
           <>
             <TopBar
               title={SECTION_TITLES[section]}
-              scope={scope}
+              scope={scopeCaption}
               period={period}
               onPeriodChange={onPeriodChange}
               customRange={customRange}
@@ -514,7 +554,7 @@ function AppMain() {
             />
             <div className={motionClass('body', 'section-fade')}>
               {section === 'overview' ? (
-                <OverviewContent period={period} provider={provider} range={customRange} overview={overview} onNavigate={navigate} ready={ready} />
+                <OverviewContent period={period} provider={provider} range={customRange} overview={overview} onNavigate={navigate} ready={ready} scope={scope} />
               ) : section === 'sessions' ? (
                 <Sessions period={period} provider={provider} range={customRange} refreshToken={refreshToken} detectedProviders={detectedProviders} onProviderChange={onProviderSelect} ready={ready} />
               ) : section === 'pullRequests' ? (

app/renderer/lib/types.ts

@@ -6,6 +6,10 @@
 
 export type Period = 'today' | 'week' | '30days' | 'month' | 'all' | 'lifetime'
 
+// Dashboard usage scope: this device only ('local') or the aggregate across
+// every paired device ('combined'). Mirrors the macOS menubar's Scope setting.
+export type Scope = 'local' | 'combined'
+
 export type DateRange = { from: string; to: string }
 
 export type CliErrorKind = 'not-found' | 'nonzero' | 'bad-json' | 'timeout' | 'too-large' | 'bad-args'
@@ -637,7 +641,9 @@ export interface CodeburnBridge {
   getQuota(force?: boolean): Promise<QuotaProvider[]>
   // `background` (prefetch only) requests background CLI-spawn priority; optional
   // so an older preload that ignores it degrades to interactive priority.
-  getOverview(period: Period, provider: string, range?: DateRange, configSource?: string | null, background?: boolean): Promise<MenubarPayload>
+  // `scope` selects local-device usage ('local', default) or paired-device
+  // aggregate ('combined'); optional so an older preload degrades to local.
+  getOverview(period: Period, provider: string, range?: DateRange, configSource?: string | null, background?: boolean, scope?: string): Promise<MenubarPayload>
   getPlans(period: Period): Promise<StatusJson>
   getActReport(): Promise<ActReportJson>
   readonly platform: string

app/renderer/sections/Overview.test.tsx

@@ -520,6 +520,49 @@ describe('Overview', () => {
     expect(screen.queryByText('Saved to date')).not.toBeInTheDocument()
   })
 
+  it('shows paired-device aggregate totals in the hero under combined scope', async () => {
+    const now = new Date()
+    const payload = makePayload(now)
+    // Local device: $312.40 / 4200 calls / 88 sessions (from makePayload).
+    // Combined swaps the hero to the cross-device aggregate and lists devices.
+    payload.combined = {
+      perDevice: [
+        { id: 'local', name: 'laptop', local: true, cost: 312.4, calls: 4200, sessions: 88, inputTokens: 0, outputTokens: 0, cacheCreateTokens: 0, cacheReadTokens: 0, totalTokens: 0 },
+        { id: 'fp-workstation', name: 'workstation', local: false, cost: 187.6, calls: 2100, sessions: 40, inputTokens: 0, outputTokens: 0, cacheCreateTokens: 0, cacheReadTokens: 0, totalTokens: 0 },
+      ],
+      combined: { cost: 500, calls: 6300, sessions: 128, inputTokens: 0, outputTokens: 0, cacheCreateTokens: 0, cacheReadTokens: 0, totalTokens: 0, deviceCount: 2, reachableCount: 2 },
+    }
+
+    const { container } = render(<OverviewContent period="30days" provider="all" overview={polled(payload)} scope="combined" />)
+
+    const kpis = container.querySelector('.ov-hero-main') as HTMLElement
+    // Hero cost is the combined $500, not the local $312.40.
+    expect(within(kpis).getByText('$500.00')).toBeInTheDocument()
+    expect(within(kpis).getByText(/6,300 calls · 128 sessions/)).toBeInTheDocument()
+    expect(within(kpis).getByText('Combined · Last 30 days')).toBeInTheDocument()
+    expect(within(kpis).getByText('2 of 2 devices')).toBeInTheDocument()
+    expect(within(kpis).getByText('workstation')).toBeInTheDocument()
+    expect(within(kpis).getByText('laptop · this device')).toBeInTheDocument()
+    // Combined mode hides the local savings lines (they are device-specific).
+    expect(within(kpis).queryByText('Saved via local models')).not.toBeInTheDocument()
+  })
+
+  it('keeps local hero totals when scope is local even if a combined payload is present', async () => {
+    const now = new Date()
+    const payload = makePayload(now)
+    payload.combined = {
+      perDevice: [],
+      combined: { cost: 999, calls: 1, sessions: 1, inputTokens: 0, outputTokens: 0, cacheCreateTokens: 0, cacheReadTokens: 0, totalTokens: 0, deviceCount: 2, reachableCount: 2 },
+    }
+
+    const { container } = render(<OverviewContent period="30days" provider="all" overview={polled(payload)} scope="local" />)
+
+    const kpis = container.querySelector('.ov-hero-main') as HTMLElement
+    expect(within(kpis).getByText('$312.40')).toBeInTheDocument()
+    expect(within(kpis).queryByText('$999.00')).not.toBeInTheDocument()
+    expect(within(kpis).queryByText(/devices/)).not.toBeInTheDocument()
+  })
+
   it('shows a stale banner when last-good data is present but the latest poll failed', async () => {
     const now = new Date()
     const overview: Polled<MenubarPayload> = {

app/renderer/sections/Overview.tsx

@@ -15,10 +15,12 @@ import { codeburn } from '../lib/ipc'
 import { contiguousDailyWindow, dataStartKey, formatChartDate, localDateKey, sliceDailyToPeriod, sliceDailyToRange } from '../lib/period'
 import type {
   ActReportJson,
+  CombinedUsage,
   DailyHistoryEntry,
   DateRange,
   MenubarPayload,
   Period,
+  Scope,
   YieldJsonReport,
 } from '../lib/types'
 
@@ -650,6 +652,23 @@ export function Overview({ period, provider }: { period: Period; provider: strin
   return <OverviewContent period={period} provider={provider} overview={overview} />
 }
 
+/** Combined-scope hero footer: a per-device cost breakdown plus a reachable/
+ *  total device count, mirroring the menubar's combined view. An unreachable
+ *  device (powered off, off-network) shows its error in place of a cost. */
+function CombinedDevices({ usage }: { usage: CombinedUsage }) {
+  return (
+    <div className="ov-combined-devices">
+      <div className="ov-combined-head">{usage.combined.reachableCount} of {usage.combined.deviceCount} devices</div>
+      {usage.perDevice.map(device => (
+        <div className={device.error ? 'ov-combined-row err' : 'ov-combined-row'} key={device.id}>
+          <span className="ov-combined-name">{device.local ? `${device.name} · this device` : device.name}</span>
+          <span className="ov-combined-val">{device.error ?? formatUsd(device.cost)}</span>
+        </div>
+      ))}
+    </div>
+  )
+}
+
 export function OverviewContent({
   period,
   provider = 'all',
@@ -657,6 +676,7 @@ export function OverviewContent({
   overview,
   onNavigate,
   ready = true,
+  scope = 'local',
 }: {
   period: Period
   provider?: string
@@ -664,6 +684,7 @@ export function OverviewContent({
   overview: Polled<MenubarPayload>
   onNavigate?: (section: 'optimize' | 'sessions') => void
   ready?: boolean
+  scope?: Scope
 }) {
   // Gate secondary spawns on the app-level readiness (first overview resolved),
   // so the cold hydration runs once (via overview) rather than 3 parses at once
@@ -680,7 +701,14 @@ export function OverviewContent({
 
   const now = new Date()
   const rangeActive = !!range
-  const animateKey = `${period}|${provider}|${range?.from ?? ''}|${range?.to ?? ''}`
+  // Combined scope shows the paired-device aggregate in the hero KPIs, mirroring
+  // the menubar. Only the hero totals are aggregated; the detailed panels below
+  // (daily chart, models) stay local — the combined payload carries totals only.
+  const combined = scope === 'combined' ? data.combined : undefined
+  const heroCost = combined ? combined.combined.cost : data.current.cost
+  const heroCalls = combined ? combined.combined.calls : data.current.calls
+  const heroSessions = combined ? combined.combined.sessions : data.current.sessions
+  const animateKey = `${period}|${provider}|${range?.from ?? ''}|${range?.to ?? ''}|${scope}`
   const stats = deriveStats(data, now)
   const periodDaily = sliceDailyToPeriod(data.history.daily, period, now)
   // Daily chart: contiguous zero-filled calendar window. A custom range spans
@@ -715,15 +743,21 @@ export function OverviewContent({
       {error && <StaleBanner error={error} />}
       <div className="ov-card ov-hero-split" aria-label="Key performance indicators">
         <div className="ov-hero-main">
-          <div className="ov-hero-top"><span className="ov-label">{data.current.label}</span><span className="ov-streak"><b>{streakDays(data.history.daily, now)}</b>-day streak</span></div>
-          <CountUp value={data.current.cost} animateKey={animateKey} />
-          <div className="ov-hero-sub">{data.current.calls.toLocaleString('en-US')} calls · {data.current.sessions.toLocaleString('en-US')} sessions</div>
-          {saved > 0 && (
-            <div className="ov-saved-line"><span>Saved by applied fixes</span><strong>{formatUsd(saved)}</strong><small>across {applied} {applied === 1 ? 'fix' : 'fixes'}</small></div>
-          )}
-          {localSaved > 0 && (
-            <div className="ov-saved-line"><span>Saved via local models</span><strong>{formatUsd(localSaved)}</strong><small>local-model routing</small></div>
-          )}
+          <div className="ov-hero-top"><span className="ov-label">{combined ? `Combined · ${data.current.label}` : data.current.label}</span><span className="ov-streak"><b>{streakDays(data.history.daily, now)}</b>-day streak</span></div>
+          <CountUp value={heroCost} animateKey={animateKey} />
+          <div className="ov-hero-sub">{heroCalls.toLocaleString('en-US')} calls · {heroSessions.toLocaleString('en-US')} sessions</div>
+          {combined
+            ? <CombinedDevices usage={combined} />
+            : (
+              <>
+                {saved > 0 && (
+                  <div className="ov-saved-line"><span>Saved by applied fixes</span><strong>{formatUsd(saved)}</strong><small>across {applied} {applied === 1 ? 'fix' : 'fixes'}</small></div>
+                )}
+                {localSaved > 0 && (
+                  <div className="ov-saved-line"><span>Saved via local models</span><strong>{formatUsd(localSaved)}</strong><small>local-model routing</small></div>
+                )}
+              </>
+            )}
         </div>
         <ActivityHeatmap daily={data.history.daily} bare />
         <EfficiencyScorecard current={data.current} bare />

app/renderer/sections/Settings.test.tsx

@@ -145,6 +145,17 @@ describe('Settings', () => {
     expect(localStorage.getItem('codeburn.dailyBudget')).toBeFalsy()
   })
 
+  it('reflects the current scope and reports a change through onScopeChange', async () => {
+    const user = userEvent.setup()
+    const onScopeChange = vi.fn()
+    render(<Settings period="month" scope="local" onScopeChange={onScopeChange} />)
+    const scope = screen.getByLabelText('Scope')
+    expect(scope).toHaveTextContent('Local')
+    await user.click(scope)
+    await user.click(screen.getByRole('option', { name: 'Combined' }))
+    expect(onScopeChange).toHaveBeenCalledWith('combined')
+  })
+
   it('lists providers from the real overview payload', async () => {
     const user = userEvent.setup()
     render(<Settings period="week" />)

app/renderer/sections/Settings.tsx

@@ -18,7 +18,7 @@ import { REFRESH_OPTIONS, useRefreshCadence } from '../lib/refreshCadence'
 import { showToast } from '../lib/toast'
 import { ToastHost } from '../components/ToastHost'
 import { rateLimitedNote } from './Plans'
-import type { ActionResult, AliasRow, ClaudeConfigSelector, CliError, CombinedUsage, DeviceScanResult, Identity, JsonPlanSummary, MenubarPayload, Period, PlanId, PlanProvider, PriceOverrideList, PriceOverrideRow, PriceRates, QuotaProvider, ShareStatus, StatusJson, TelemetryStatus } from '../lib/types'
+import type { ActionResult, AliasRow, ClaudeConfigSelector, CliError, CombinedUsage, DeviceScanResult, Identity, JsonPlanSummary, MenubarPayload, Period, PlanId, PlanProvider, PriceOverrideList, PriceOverrideRow, PriceRates, QuotaProvider, Scope, ShareStatus, StatusJson, TelemetryStatus } from '../lib/types'
 
 export type SettingsPane = 'general' | 'providers' | 'aliases' | 'pricing' | 'plans' | 'devices' | 'export' | 'privacy'
 type Pane = SettingsPane
@@ -97,7 +97,7 @@ function ConfirmButton({ label, prompt, onConfirm }: { label: string; prompt: st
   )
 }
 
-export function Settings({ period, refreshToken = 0, onNavigate, initialPane, claudeConfigs, claudeConfigSource = null, onConfigMutated }: { period: Period; refreshToken?: number; onNavigate?: (section: Section) => void; initialPane?: SettingsPane; claudeConfigs?: ClaudeConfigSelector; claudeConfigSource?: string | null; onConfigMutated?: () => void }) {
+export function Settings({ period, refreshToken = 0, onNavigate, initialPane, claudeConfigs, claudeConfigSource = null, onConfigMutated, scope = 'local', onScopeChange }: { period: Period; refreshToken?: number; onNavigate?: (section: Section) => void; initialPane?: SettingsPane; claudeConfigs?: ClaudeConfigSelector; claudeConfigSource?: string | null; onConfigMutated?: () => void; scope?: Scope; onScopeChange?: (scope: string) => void }) {
   const [pane, setPane] = useState<Pane>(initialPane ?? 'general')
 
   return (
@@ -113,7 +113,7 @@ export function Settings({ period, refreshToken = 0, onNavigate, initialPane, cl
           ))}
         </nav>
         <main className="set-pane">
-          {pane === 'general' && <GeneralPane period={period} refreshToken={refreshToken} claudeConfigs={claudeConfigs} claudeConfigSource={claudeConfigSource} onConfigMutated={onConfigMutated} />}
+          {pane === 'general' && <GeneralPane period={period} refreshToken={refreshToken} claudeConfigs={claudeConfigs} claudeConfigSource={claudeConfigSource} onConfigMutated={onConfigMutated} scope={scope} onScopeChange={onScopeChange} />}
           {pane === 'providers' && <ProvidersPane period={period} refreshToken={refreshToken} />}
           {pane === 'aliases' && <AliasesPane refreshToken={refreshToken} onConfigMutated={onConfigMutated} />}
           {pane === 'pricing' && <PricingPane refreshToken={refreshToken} onConfigMutated={onConfigMutated} />}
@@ -128,7 +128,7 @@ export function Settings({ period, refreshToken = 0, onNavigate, initialPane, cl
   )
 }
 
-function GeneralPane({ period, refreshToken, claudeConfigs, claudeConfigSource, onConfigMutated }: { period: Period; refreshToken: number; claudeConfigs?: ClaudeConfigSelector; claudeConfigSource: string | null; onConfigMutated?: () => void }) {
+function GeneralPane({ period, refreshToken, claudeConfigs, claudeConfigSource, onConfigMutated, scope = 'local', onScopeChange }: { period: Period; refreshToken: number; claudeConfigs?: ClaudeConfigSelector; claudeConfigSource: string | null; onConfigMutated?: () => void; scope?: Scope; onScopeChange?: (scope: string) => void }) {
   const [currencyNonce, setCurrencyNonce] = useState(0)
   const plans = usePolled<StatusJson>(() => codeburn.getPlans(period), [period, refreshToken, currencyNonce])
   const [theme, setTheme] = useState<Theme>(() => {
@@ -202,6 +202,7 @@ function GeneralPane({ period, refreshToken, claudeConfigs, claudeConfigSource,
             <button className="set-text-button" onClick={() => void codeburn.resetCurrency().then(finishCurrency)}>Reset to USD</button>
           </span></div>
           <div className="about-row"><label className="tx" htmlFor="settings-period">Default period<small>Applied on next launch.</small></label><span className="r"><Dropdown id="settings-period" ariaLabel="Default period" value={defaultPeriod} options={[{ value: 'today', label: 'Today' }, { value: 'week', label: '7d' }, { value: '30days', label: '30d' }, { value: 'month', label: 'Month' }, { value: 'all', label: 'All' }]} onChange={value => { setDefaultPeriod(value); writeSetting('codeburn.defaultPeriod', value) }} width={92} /></span></div>
+          <div className="about-row"><label className="tx" htmlFor="settings-scope">Scope<small>Combined aggregates usage across every paired device, like the menubar. Local shows this device only.</small></label><span className="r"><Dropdown id="settings-scope" ariaLabel="Scope" value={scope} options={[{ value: 'local', label: 'Local' }, { value: 'combined', label: 'Combined' }]} onChange={value => onScopeChange?.(value)} width={110} /></span></div>
           <div className="about-row"><label className="tx" htmlFor="settings-refresh">Refresh every<small>How often data auto-refreshes. Manual updates only on ⌘R.</small></label><span className="r"><Dropdown id="settings-refresh" ariaLabel="Refresh every" value={cadence.value} options={REFRESH_OPTIONS.map(option => ({ value: option.value, label: option.label }))} onChange={cadence.setValue} width={124} /></span></div>
           <div className="about-row"><label className="tx" htmlFor="settings-budget">Daily budget<small>Warns at 80%, alerts at 100%.</small></label><span className="r"><Dropdown id="settings-budget" ariaLabel="Daily budget" value={budgetKind} options={[{ value: 'off', label: 'Off' }, { value: 'usd', label: 'USD amount' }, { value: 'tokens', label: 'Tokens' }]} onChange={value => { const kind = value as 'off' | 'usd' | 'tokens'; setBudgetKind(kind); persistBudget(kind, budgetInput) }} width={120} />{budgetKind !== 'off' && <input className="set-input" type="text" inputMode="decimal" aria-label="Daily budget amount" placeholder={budgetKind === 'usd' ? 'USD' : 'tokens'} value={budgetInput} onChange={event => { setBudgetInput(event.target.value); persistBudget(budgetKind, event.target.value) }} style={{ width: 90 }} />}</span></div>
           {budgetError && <p className="set-action-msg error">{budgetError}</p>}

app/renderer/styles/plain.css

@@ -512,6 +512,12 @@ td:first-child { font-size: var(--fs-body); font-weight: var(--fw-body); }
 .ov-saved-line { display: flex; flex-wrap: wrap; align-items: baseline; gap: 3px 7px; margin-top: 5px; padding-top: 9px; border-top: 1px solid var(--line2); color: var(--mut2); font-size: 10.5px; }
 .ov-saved-line strong { color: var(--ok); font-family: var(--mono); font-size: 13px; font-weight: 650; font-variant-numeric: tabular-nums; }
 .ov-saved-line small { color: var(--mut2); font-size: 10px; }
+.ov-combined-devices { width: 100%; margin-top: 5px; padding-top: 9px; border-top: 1px solid var(--line2); display: flex; flex-direction: column; gap: 3px; }
+.ov-combined-head { color: var(--mut2); font-size: 10.5px; font-weight: 560; text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: 2px; }
+.ov-combined-row { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; font-size: 11.5px; color: var(--mut); }
+.ov-combined-row .ov-combined-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.ov-combined-row .ov-combined-val { font-family: var(--mono); font-variant-numeric: tabular-nums; color: var(--ink); }
+.ov-combined-row.err .ov-combined-val { color: var(--warn); font-family: inherit; }
 .ov-hero-split .ov-heatmap-bare { display: flex; flex-direction: column; justify-content: space-between; gap: 8px; }
 .ov-activity-head { display: flex; align-items: baseline; gap: 8px; }
 .ov-hero-sub .neutral { color: var(--mut); font-weight: 560; }

docs/providers/codex.md

@@ -48,6 +48,110 @@ A session that yielded zero parseable lines does **not** write to the cache (`co
 - `prev*` token counters are advanced on **every** event, including ones that used `last_token_usage`. Earlier code only updated them on the fallback branch, which double-counted any session that mixed modes.
 - OpenAI counts cached tokens **inside** `input_tokens`. The parser subtracts them so the rest of the codebase can assume Anthropic semantics (cached are separate).
 
+## Live quota (ChatGPT subscription)
+
+Separate from the log parser above: the desktop app and the macOS menubar read
+live quota from `GET https://chatgpt.com/backend-api/wham/usage` using the Codex
+OAuth token. Two independent implementations of the same decoder, which must be
+kept in sync:
+
+- `app/electron/quota/codex.ts`: `decodeCodexUsage()` is the pure, exported decoder.
+- `mac/Sources/CodeBurnMenubar/Data/CodexSubscriptionService.swift`: `decodeUsage()`.
+
+### Seat-based plans (Plus, Pro, Team)
+
+`rate_limit.primary_window` / `secondary_window` carry `used_percent`,
+`reset_at` and `limit_window_seconds`. The window *label* is inferred from the
+duration (5-hour, Weekly, …), never from the plan, because window size is dynamic per
+account. `additional_rate_limits[]` holds per-model limits (Codex Spark, etc.)
+and is only surfaced when utilization is non-zero.
+
+### Credit-metered plans (Business, Edu, Enterprise on flexible pricing)
+
+These workspaces have **no rate-limit windows**: `rate_limit` comes back
+`null`. Usage scales with credits, and an admin sets a monthly per-user credit
+allowance. That allowance is the account's only limit and lives in
+`spend_control`:
+
+```jsonc
+"spend_control": {
+  "reached": false,
+  "individual_limit": {
+    "source": "workspace_spend_controls",
+    "limit": "10000",              // string
+    "used": "3028.9909675121307",  // string
+    "used_percent": 30,            // number
+    "remaining_percent": 70,
+    "reset_after_seconds": 441896, // time *remaining*, not window length
+    "reset_at": 1785542400
+  }
+}
+```
+
+Notes that have bitten us:
+
+- **Number encodings are mixed within the same object**: `limit` and `used`
+  arrive as strings while `used_percent` arrives as a number. Every numeric
+  field is decoded flexibly (number | string) on both sides.
+- **`reset_after_seconds` is not the window length.** Pace projection needs the
+  whole-window duration, so it is derived as the calendar month preceding
+  `reset_at`, resolved in **UTC**: `reset_at` is a UTC boundary, and a local
+  calendar would make the month length depend on the viewer's timezone (a
+  2026-03-01Z reset spans 28 days in UTC but 31 in Toronto).
+- Two other positions for this object have been observed in other clients
+  (top-level `individual_limit`, and nested under `rate_limit`), in both
+  snake_case and camelCase. All are accepted; `spend_control` wins.
+- `credits.has_credits` means the account settles in **credits, not dollars**, so
+  `credits.balance` must not be rendered with a currency symbol in that case.
+  `credits.unlimited` means credit-metered but deliberately uncapped.
+- **`has_credits` is not "is credit-metered".** The live Enterprise workspace
+  above is credit-metered (it has a `spend_control` allowance) yet reports
+  `has_credits: false` with a `null` balance, so the flag tracks whether the
+  account holds a *credit balance*, which is orthogonal to the allowance. Do not
+  derive one from the other. The `has_credits: true` rendering path has not been
+  observed against a real account; if a seat-based account ever reports it
+  alongside a dollar balance, the footer would drop the `$` and round to whole
+  units.
+
+### `plan_type` cannot distinguish Business from Enterprise
+
+A live ChatGPT **Enterprise** workspace reports `plan_type: "business"` on this
+endpoint, and the `id_token`'s `https://api.openai.com/auth → chatgpt_plan_type`
+claim says `"business"` too, even though ChatGPT's own workspace switcher
+displays "Enterprise". Neither source carries the distinction, so the label
+CodeBurn shows is faithfully what OpenAI returns. Do not try to infer a tier
+from the presence of a spend control.
+
+The switcher renders from the accounts endpoints, and **those are not reachable
+with a Codex token**, verified against a live Enterprise workspace:
+
+| Endpoint | Result |
+| --- | --- |
+| `/backend-api/accounts/check/v4-2023-04-27` | 403 |
+| `/backend-api/accounts/check` | 403 |
+| `/backend-api/me` | 403 |
+| `/backend-api/settings/account_user_setting` | 403 |
+
+Not an expiry or a missing-header problem: the same token returns 200 on
+`/wham/usage` (and on `/backend-api/gizmo_creator_profile`) in the same run. The
+Codex OAuth access token carries scopes `openid profile email offline_access
+api.connectors.read api.connectors.invoke` with audience
+`https://api.openai.com/v1`, with no ChatGPT web-app account scope, so the accounts
+surfaces reject it by design. Adding a `ChatGPT-Account-Id` header does not
+change this. **Business is therefore the correct label to display**; closing
+this gap would need a different credential, not a different endpoint.
+
+Composite tiers (`enterprise_cbp_usage_based`, `self_serve_business_usage_based`)
+*are* normalized down to their base tier before lookup.
+
+### Reset credits
+
+`rate_limit_reset_credits` is carried inline on the usage payload
+(`available_count`). The dedicated `GET /wham/rate-limit-reset-credits`
+endpoint is only called when the inline block is absent. It is the sole source
+of per-credit `expires_at` values, so the "next expires" caption is omitted on
+the inline path.
+
 ## When fixing a bug here
 
 1. Reproduce against a real `rollout-*.jsonl` if you can. Drop a redacted copy under `tests/fixtures/codex/` and reference it from `tests/providers/codex.test.ts`.

docs/sync/README.md

@@ -48,6 +48,9 @@ codeburn sync push --since 30d
 
 # Preview what would be sent
 codeburn sync push --dry-run
+
+# Also push git attribution (opt-in — see "Git attribution" below)
+codeburn sync push --attribution
 ```
 
 ### `codeburn sync status`
@@ -95,6 +98,36 @@ Each AI interaction becomes one OTLP span with these attributes:
 
 A pseudonymous `device_id` distinguishes your machines without revealing hostnames.
 
+### Git attribution (opt-in: `--attribution`)
+
+`codeburn sync push --attribution` additionally sends the session→commit correlation that `codeburn yield` computes locally, so the backend can join AI usage to git activity without git hooks. Two extra span types are emitted:
+
+**`codeburn.session.attribution`** — one per session with joinable evidence:
+
+| Field | Example | Description |
+|---|---|---|
+| `ai.session_id` | `abc123…` | Session (shares the usage spans' traceId) |
+| `ai.project` | `my-app` | Project name |
+| `git.repo` | `github.com/acme/widget` | Normalized `origin` remote (credentials and ports stripped) |
+| `git.pr_links` | `["…/pull/12"]` | PR URLs captured for the session |
+| `git.commit_count` | `2` | Number of attributed commits |
+
+**`codeburn.commit`** — one per commit attributed to a session:
+
+| Field | Example | Description |
+|---|---|---|
+| `git.sha` | `4f2a…` | Commit SHA |
+| `git.in_main` | `true` | Whether the commit landed in the main branch |
+| `git.was_reverted` | `false` | Whether a later commit reverted it |
+
+Attribution is **inferred** (timestamp-window correlation, the same heuristic as `codeburn yield`); the resource attribute `codeburn.attribution_methodology: timestamp-window` marks it as such. State transitions (a commit merging to main, or being reverted) are re-sent automatically on later pushes — receivers should upsert commits by `(git.repo, git.sha)` and session spans by `ai.session_id` (latest state wins). When a commit migrates to a later-parsed session with a tighter window, the losing session re-emits with `git.commit_count: 0` (a retraction), so summing `git.commit_count` across upserted session rows never double-counts. Retractions fire only when the commit was won by another session — commits that merely age out of the `--since` window are not retracted, so a previously-synced count stays correct. Session spans also re-emit when an ongoing session's window grows, keeping the span end time current.
+
+With `--attribution`, normalized repo remote URLs, commit SHAs, commit timestamps (span start times), PR URLs, and the merged/reverted booleans leave your machine — plus the same pseudonymous `codeburn.device_id` resource attribute the usage spans carry. PR links are rebuilt client-side from scheme + host + path only (userinfo, query strings, and fragments are dropped; https, `/org/repo/pull/N` path, bounded length, max 20 per session), and the repo identity itself passes a strict hostname/path allow-list before sending — malformed or transport-helper remotes (`ext::…`, `codecommit::…`) are rejected outright rather than parsed. Precisely what is and is not sent:
+
+- **Commits**: only from repos with a network `origin` remote, and only for sessions whose own project path resolved to that repo. Local-only repos, `file://` remotes, and Windows filesystem paths are never emitted as repo identities. A session whose project path no longer resolves never inherits the repo of the directory you happen to push from.
+- **PR links**: sent whenever a session captured them, even when the session's repo could not be identified — the PR URL itself names the repo, so this adds no information beyond the link the session already recorded.
+- Without the flag, none of this is sent.
+
 ### What is NOT sent
 
 - **Prompts** — your actual messages to AI are never included
@@ -102,7 +135,7 @@ A pseudonymous `device_id` distinguishes your machines without revealing hostnam
 - **Bash commands** — may contain secrets, never sent
 - **Your name/email** — identity is derived server-side from your login token
 
-There is no flag to override this. Privacy is structural, not configurable.
+There is no flag to override this. Privacy is structural, not configurable. The only additive opt-in is `--attribution` (repo remotes, commit SHAs, and PR URLs — never code or prompts), described above.
 
 ## Authentication
 

mac/Sources/CodeBurnMenubar/AppStore.swift

@@ -271,6 +271,38 @@ final class AppStore {
         cache[menubarStatusKey]?.payload
     }
 
+    private var menubarCombinedKey: PayloadCacheKey {
+        PayloadCacheKey(scope: .combined, period: menubarPeriod, provider: .all, day: nil, claudeConfigSourceId: selectedClaudeConfigSourceId)
+    }
+
+    /// Cross-device totals for the menubar badge's period, used so the badge
+    /// figure matches the popover hero under combined scope. `nil` under local
+    /// scope, or when no combined payload for the badge period is cached yet
+    /// (cold start, or the peer is unreachable) — the badge then falls back to
+    /// the local figure, exactly like the popover.
+    var menubarBadgeCombined: CombinedUsageTotals? {
+        guard effectiveSelectedScope == .combined else { return nil }
+        return cache[menubarCombinedKey]?.payload.combined?.combined
+    }
+
+    /// Refresh the payloads the badge renders for `period`: always the local
+    /// figure, plus the combined cross-device total when combined scope is
+    /// active. Combined is best-effort — a slow or unreachable peer degrades to
+    /// the local figure — so the local fetch alone determines success.
+    @discardableResult
+    func refreshMenubarBadge(period: Period, force: Bool = false, qualityOfService: QualityOfService = .userInitiated) async -> Bool {
+        async let local = refreshQuietly(period: period, force: force, qualityOfService: qualityOfService)
+        guard effectiveSelectedScope == .combined else { return await local }
+        async let combined = refreshQuietly(
+            key: PayloadCacheKey(scope: .combined, period: period, provider: .all, day: nil, claudeConfigSourceId: selectedClaudeConfigSourceId),
+            includeOptimize: false,
+            force: force,
+            qualityOfService: qualityOfService
+        )
+        let (localSucceeded, _) = await (local, combined)
+        return localSucceeded
+    }
+
     /// All-provider payload for the selected period. Used by the tab strip to show
     /// per-provider costs that match the active period, not just today.
     var periodAllPayload: MenubarPayload? {
@@ -1378,19 +1410,38 @@ final class AppStore {
                     details.append(.init(label: "\(extra.name) · \(s.windowLabel)", percent: s.usedPercent / 100, resetsAt: s.resetsAt))
                 }
             }
+            // No rate windows here, so the allowance feeds the bar and badge.
+            if let credits = usage.creditLimit {
+                let row = QuotaSummary.Window(
+                    label: credits.shortLabel,
+                    percent: credits.usedPercent / 100,
+                    resetsAt: credits.resetsAt
+                )
+                if primary == nil { primary = row }
+                details.append(row)
+            }
         }
         let plan = codexUsage?.plan.displayName
         var footerLines: [String] = []
         if let balance = codexUsage?.creditsBalance, balance > 0 {
-            // Format as plain dollars; ChatGPT settles in USD regardless of
-            // the user's display-currency preference.
+            // Credit-settled accounts denominate in credits, so no symbol.
+            let inCredits = codexUsage?.hasCredits == true
             let formatter = NumberFormatter()
-            formatter.numberStyle = .currency
-            formatter.currencyCode = "USD"
-            formatter.maximumFractionDigits = 2
-            let formatted = formatter.string(from: NSNumber(value: balance)) ?? "$\(balance)"
+            formatter.numberStyle = inCredits ? .decimal : .currency
+            formatter.maximumFractionDigits = inCredits ? 0 : 2
+            // Half-up matches the desktop decoder's Math.round; the default is
+            // half-even, which disagrees on exact-half balances.
+            formatter.roundingMode = .halfUp
+            // `en_US`, not `en_US_POSIX`: the latter drops grouping entirely.
+            formatter.locale = Locale(identifier: "en_US")
+            if !inCredits { formatter.currencyCode = "USD" }
+            let fallback = inCredits ? "\(Int(balance.rounded()))" : "$\(balance)"
+            let formatted = formatter.string(from: NSNumber(value: balance)) ?? fallback
             footerLines.append("Credits remaining · \(formatted)")
         }
+        if codexUsage?.creditLimit == nil, codexUsage?.creditsUnlimited == true {
+            footerLines.append("Credits · Unlimited")
+        }
         return QuotaSummary(providerFilter: filter, connection: connection, primary: primary, details: details, planLabel: plan, footerLines: footerLines)
     }
 

mac/Sources/CodeBurnMenubar/CodeBurnApp.swift

@@ -467,7 +467,7 @@ final class AppDelegate: NSObject, NSApplicationDelegate, NSPopoverDelegate, NSM
         // is refreshed by refreshPayloadForPopoverOpen the moment it opens,
         // so a closed-popover tick never pays for it (#647).
         if !(popover?.isShown ?? false) {
-            async let menubar = store.refreshQuietly(
+            async let menubar = store.refreshMenubarBadge(
                 period: menubarPeriod,
                 force: force,
                 qualityOfService: qualityOfService
@@ -489,7 +489,7 @@ final class AppDelegate: NSObject, NSApplicationDelegate, NSPopoverDelegate, NSM
             qualityOfService: qualityOfService
         )
         async let menubar = needsMenubarPayload
-            ? store.refreshQuietly(period: menubarPeriod, force: force, qualityOfService: qualityOfService)
+            ? store.refreshMenubarBadge(period: menubarPeriod, force: force, qualityOfService: qualityOfService)
             : true
         async let today = needsTodayPayload
             ? store.refreshQuietly(period: .today, force: force, qualityOfService: qualityOfService)
@@ -870,6 +870,9 @@ final class AppDelegate: NSObject, NSApplicationDelegate, NSPopoverDelegate, NSM
             _ = self.store.payload
             _ = self.store.menubarPeriod
             _ = self.store.menubarPayload
+            // Combined-scope badge total: re-render the badge when the cross-device
+            // aggregate for the menubar period lands (or a peer goes reachable).
+            _ = self.store.menubarBadgeCombined
             // Track currency so the menubar title catches up immediately on
             // currency switch instead of waiting for the next 30s payload tick.
             _ = self.store.currency
@@ -1023,23 +1026,31 @@ final class AppDelegate: NSObject, NSApplicationDelegate, NSPopoverDelegate, NSM
 
         if store.displayMetric != .iconOnly {
             let suffix = menubarPeriod.menubarSuffix(compact: compact)
+            // Under combined scope the badge shows the cross-device aggregate, so
+            // it matches the popover hero instead of trailing it with the local
+            // figure. Falls back to local when no combined payload is available
+            // (local scope, cold cache, or an unreachable peer). Credits have no
+            // combined total, so that metric always reflects the local device.
+            let badgeCombined = store.menubarBadgeCombined
+            let cost: Double? = badgeCombined?.cost ?? menubarPayload?.current.cost
+            let outputTokens: Int? = badgeCombined?.outputTokens ?? menubarPayload?.current.outputTokens
+            let inputTokens: Int? = badgeCombined?.inputTokens ?? menubarPayload?.current.inputTokens
             let valueText: String
-            if store.displayMetric == .tokens, let p = menubarPayload?.current {
-                let out = formatTokensMenubar(Double(p.outputTokens))
-                let inp = formatTokensMenubar(Double(p.inputTokens))
-                valueText = compact ? "↑\(out)↓\(inp)\(suffix)" : " ↑\(out) ↓\(inp)\(suffix)"
-            } else if store.displayMetric == .totalTokens, let p = menubarPayload?.current {
-                let total = formatTokensMenubar(Double(p.inputTokens + p.outputTokens))
+            if store.displayMetric == .tokens, let out = outputTokens, let inp = inputTokens {
+                let outText = formatTokensMenubar(Double(out))
+                let inpText = formatTokensMenubar(Double(inp))
+                valueText = compact ? "↑\(outText)↓\(inpText)\(suffix)" : " ↑\(outText) ↓\(inpText)\(suffix)"
+            } else if store.displayMetric == .totalTokens, let out = outputTokens, let inp = inputTokens {
+                let total = formatTokensMenubar(Double(inp + out))
                 valueText = compact ? "\(total)\(suffix)" : " \(total)\(suffix)"
             } else if store.displayMetric == .credits, let p = menubarPayload?.current {
                 let credits = formatTokensMenubar((p.codexCredits ?? 0).rounded())
                 valueText = compact ? "\(credits)cr\(suffix)" : " \(credits) credits\(suffix)"
             } else {
                 let fallback = compact ? "$-" : "$—"
-                let formatted = menubarPayload?.current.cost
                 valueText = compact
-                    ? (formatted?.asCompactCurrencyWhole() ?? fallback) + suffix
-                    : " " + (formatted?.asCompactCurrency() ?? fallback) + suffix
+                    ? (cost?.asCompactCurrencyWhole() ?? fallback) + suffix
+                    : " " + (cost?.asCompactCurrency() ?? fallback) + suffix
             }
 
             var textAttrs: [NSAttributedString.Key: Any] = [.font: font, .baselineOffset: -1.0]

mac/Sources/CodeBurnMenubar/Data/CodexSubscriptionService.swift

@@ -111,10 +111,12 @@ enum CodexSubscriptionService {
         switch http.statusCode {
         case 200:
             clearUsageBlock()
-            // Companion fetch, strictly best-effort: any failure yields nil and
-            // the Plan view simply omits the row. This endpoint must never be
-            // able to break the quota display.
-            let resetCredits = await fetchResetCredits(token: token)
+            // Skip the companion request only when the inline block says zero.
+            // Best-effort either way: nil just omits the row.
+            var resetCredits = inlineResetCreditsShortcut(data: data)
+            if resetCredits == nil {
+                resetCredits = await fetchResetCredits(token: token)
+            }
             do {
                 return try decodeUsage(data: data, resetCredits: resetCredits)
             } catch {
@@ -144,15 +146,83 @@ enum CodexSubscriptionService {
         }
     }
 
+    /// chatgpt.com mixes encodings inside one payload: `"limit": "10000"` next
+    /// to `"used_percent": 30`. Every numeric field decodes through here.
+    private enum Flexible {
+        // `decode`, not `decodeIfPresent`: missing, null and wrong-typed all
+        // mean "not available", without the double-optional footgun.
+        // Int first keeps precision above 2^53. Infinity and NaN survive
+        // `Double(_ text:)`, so reject them here.
+        static func double<K: CodingKey>(_ c: KeyedDecodingContainer<K>, _ key: K) -> Double? {
+            if let v = try? c.decode(Int.self, forKey: key) { return Double(v) }
+            if let v = try? c.decode(Double.self, forKey: key) { return v.isFinite ? v : nil }
+            if let v = try? c.decode(String.self, forKey: key),
+               let d = Double(v.trimmingCharacters(in: .whitespacesAndNewlines)) {
+                return d.isFinite ? d : nil
+            }
+            return nil
+        }
+        // `Int(exactly:)`, never `Int(_:)`: the plain initializer traps on an
+        // out-of-range Double, and a trap is not a catchable DecodingError.
+        static func int<K: CodingKey>(_ c: KeyedDecodingContainer<K>, _ key: K) -> Int? {
+            double(c, key).flatMap { Int(exactly: $0.rounded()) }
+        }
+        static func bool<K: CodingKey>(_ c: KeyedDecodingContainer<K>, _ key: K) -> Bool {
+            (try? c.decode(Bool.self, forKey: key)) ?? false
+        }
+    }
+
+    /// Decoding `[T]` is atomic, so one bad entry would discard every sibling.
+    private struct Lossy<T: Decodable>: Decodable {
+        let value: T?
+        init(from decoder: Decoder) throws { value = try? T(from: decoder) }
+    }
+
     private struct UsageDTO: Decodable {
         let plan_type: String?
         let rate_limit: RateLimit?
         let additional_rate_limits: [AdditionalLimitDTO]?
         let credits: Credits?
+        let spend_control: SpendControl?
+        /// Forward-compat: some variants hoist this to the top level.
+        let individual_limit: IndividualLimit?
+
+        enum CodingKeys: String, CodingKey {
+            case plan_type, rate_limit, additional_rate_limits, credits, spend_control
+            case individual_limit
+            case individualLimit
+        }
+
+        init(from decoder: Decoder) throws {
+            let c = try decoder.container(keyedBy: CodingKeys.self)
+            plan_type = try? c.decode(String.self, forKey: .plan_type)
+            rate_limit = try? c.decode(RateLimit.self, forKey: .rate_limit)
+            additional_rate_limits = (try? c.decode([Lossy<AdditionalLimitDTO>].self, forKey: .additional_rate_limits))?
+                .compactMap(\.value)
+            credits = try? c.decode(Credits.self, forKey: .credits)
+            spend_control = try? c.decode(SpendControl.self, forKey: .spend_control)
+            individual_limit = (try? c.decode(IndividualLimit.self, forKey: .individual_limit))
+                ?? (try? c.decode(IndividualLimit.self, forKey: .individualLimit))
+        }
 
         struct RateLimit: Decodable {
             let primary_window: WindowDTO?
             let secondary_window: WindowDTO?
+            /// Forward-compat: another observed position for the spend control.
+            let individual_limit: IndividualLimit?
+
+            enum CodingKeys: String, CodingKey {
+                case primary_window, secondary_window, individual_limit
+                case individualLimit
+            }
+
+            init(from decoder: Decoder) throws {
+                let c = try decoder.container(keyedBy: CodingKeys.self)
+                primary_window = try? c.decode(WindowDTO.self, forKey: .primary_window)
+                secondary_window = try? c.decode(WindowDTO.self, forKey: .secondary_window)
+                individual_limit = (try? c.decode(IndividualLimit.self, forKey: .individual_limit))
+                    ?? (try? c.decode(IndividualLimit.self, forKey: .individualLimit))
+            }
         }
         struct AdditionalLimitDTO: Decodable {
             let limit_name: String?
@@ -163,22 +233,72 @@ enum CodexSubscriptionService {
             let reset_at: Int?
             let limit_window_seconds: Int?
         }
+        /// Credit-metered workspaces report `rate_limit: null` and carry their
+        /// real limit here: the monthly allowance an admin sets.
+        struct SpendControl: Decodable {
+            let reached: Bool
+            let individualLimit: IndividualLimit?
+
+            enum CodingKeys: String, CodingKey {
+                case reached
+                case individual_limit
+                case individualLimit
+            }
+
+            init(from decoder: Decoder) throws {
+                let c = try decoder.container(keyedBy: CodingKeys.self)
+                reached = Flexible.bool(c, .reached)
+                individualLimit = (try? c.decode(IndividualLimit.self, forKey: .individual_limit))
+                    ?? (try? c.decode(IndividualLimit.self, forKey: .individualLimit))
+            }
+        }
+        struct IndividualLimit: Decodable {
+            let limit: Double?
+            let used: Double?
+            let usedPercent: Double?
+            let remainingPercent: Double?
+            let resetAt: Int?
+
+            enum CodingKeys: String, CodingKey {
+                case limit, used
+                case used_percent, usedPercent
+                case remaining_percent, remainingPercent
+                case reset_at, resets_at, resetsAt
+            }
+
+            init(from decoder: Decoder) throws {
+                let c = try decoder.container(keyedBy: CodingKeys.self)
+                limit = Flexible.double(c, .limit)
+                used = Flexible.double(c, .used)
+                usedPercent = Flexible.double(c, .used_percent) ?? Flexible.double(c, .usedPercent)
+                remainingPercent = Flexible.double(c, .remaining_percent)
+                    ?? Flexible.double(c, .remainingPercent)
+                resetAt = Flexible.int(c, .reset_at)
+                    ?? Flexible.int(c, .resets_at)
+                    ?? Flexible.int(c, .resetsAt)
+            }
+        }
         // chatgpt.com sometimes serializes balance as a Double ("balance": 0.0)
         // and other times as a String ("balance": "0.00"). Mirror CodexBar's
         // resilient decode so a schema drift on either shape doesn't blow up
         // the whole quota fetch.
         struct Credits: Decodable {
             let balance: Double?
-            enum CodingKeys: String, CodingKey { case balance }
+            /// Settles in credits, not dollars, which relabels `balance`.
+            let hasCredits: Bool
+            let unlimited: Bool
+
+            enum CodingKeys: String, CodingKey {
+                case balance
+                case has_credits
+                case unlimited
+            }
+
             init(from decoder: Decoder) throws {
                 let c = try decoder.container(keyedBy: CodingKeys.self)
-                if let n = try? c.decode(Double.self, forKey: .balance) {
-                    balance = n
-                } else if let s = try? c.decode(String.self, forKey: .balance), let n = Double(s) {
-                    balance = n
-                } else {
-                    balance = nil
-                }
+                balance = Flexible.double(c, .balance)
+                hasCredits = Flexible.bool(c, .has_credits)
+                unlimited = Flexible.bool(c, .unlimited)
             }
         }
     }
@@ -204,6 +324,28 @@ enum CodexSubscriptionService {
         return parseResetCredits(data: data)
     }
 
+    /// The inline block carries no per-credit expiry list, so it is only a safe
+    /// shortcut at zero, where there is no expiry to report. A non-zero count
+    /// still pays for the companion request rather than dropping the
+    /// "next expires" caption the popover would otherwise show.
+    static func inlineResetCreditsShortcut(data: Data) -> CodexUsage.ResetCredits? {
+        guard let inline = inlineResetCredits(data: data), inline.availableCount == 0 else { return nil }
+        return inline
+    }
+
+    /// Reset-credit inventory carried inline on the usage payload. Nil means
+    /// absent.
+    static func inlineResetCredits(data: Data) -> CodexUsage.ResetCredits? {
+        struct InlineDTO: Decodable {
+            struct Block: Decodable { let available_count: Int? }
+            let rate_limit_reset_credits: Block?
+        }
+        guard let count = (try? JSONDecoder().decode(InlineDTO.self, from: data))?
+            .rate_limit_reset_credits?.available_count, count >= 0
+        else { return nil }
+        return CodexUsage.ResetCredits(availableCount: count, nextExpiresAt: nil)
+    }
+
     /// Internal (not private) so tests can drive it with fixture payloads.
     /// Returns nil on any unexpected shape — the caller treats nil as
     /// "feature unavailable", never as an error.
@@ -239,7 +381,8 @@ enum CodexSubscriptionService {
         return plain.date(from: raw)
     }
 
-    private static func decodeUsage(data: Data, resetCredits: CodexUsage.ResetCredits? = nil) throws -> CodexUsage {
+    /// Internal (not private) so tests can drive it with fixture payloads.
+    static func decodeUsage(data: Data, resetCredits: CodexUsage.ResetCredits? = nil) throws -> CodexUsage {
         let root = try JSONDecoder().decode(UsageDTO.self, from: data)
         let additional: [CodexUsage.AdditionalLimit] = (root.additional_rate_limits ?? []).compactMap { dto in
             guard let name = dto.limit_name, !name.isEmpty else { return nil }
@@ -249,17 +392,61 @@ enum CodexSubscriptionService {
                 secondary: makeWindow(dto.rate_limit?.secondary_window)
             )
         }
+        let limitDTO = root.spend_control?.individualLimit
+            ?? root.individual_limit
+            ?? root.rate_limit?.individual_limit
         return CodexUsage(
             plan: CodexUsage.planType(from: root.plan_type),
             primary: makeWindow(root.rate_limit?.primary_window),
             secondary: makeWindow(root.rate_limit?.secondary_window),
             additionalLimits: additional,
             creditsBalance: root.credits?.balance,
+            hasCredits: root.credits?.hasCredits ?? false,
+            creditsUnlimited: root.credits?.unlimited ?? false,
+            creditLimit: makeCreditLimit(limitDTO, reached: root.spend_control?.reached ?? false),
             resetCredits: resetCredits,
             fetchedAt: Date()
         )
     }
 
+    private static func makeCreditLimit(
+        _ dto: UsageDTO.IndividualLimit?,
+        reached: Bool
+    ) -> CodexUsage.CreditLimit? {
+        guard let dto, let limit = dto.limit, limit > 0 else { return nil }
+        // Server percentage, then remaining_percent, then the raw ratio. No
+        // signal at all means the draw is unknown; a 0% bar would claim otherwise.
+        guard let raw = dto.usedPercent
+            ?? dto.remainingPercent.map({ 100 - $0 })
+            ?? dto.used.map({ $0 / limit * 100 })
+        else { return nil }
+        let percent = min(max(raw, 0), 100)
+        let resetsAt = dto.resetAt.flatMap { $0 > 0 ? Date(timeIntervalSince1970: TimeInterval($0)) : nil }
+        return CodexUsage.CreditLimit(
+            // Unclamped percent, so a 120% draw still reports 12,000 of 10,000.
+            used: dto.used ?? limit * max(raw, 0) / 100,
+            limit: limit,
+            usedPercent: percent,
+            resetsAt: resetsAt,
+            windowSeconds: monthlyWindowSeconds(endingAt: resetsAt),
+            reached: reached
+        )
+    }
+
+    /// Spend controls reset on a calendar-month boundary, so the window is the
+    /// month preceding the reset. Not `reset_after_seconds`, which is remaining.
+    /// UTC, not `Calendar.current`: a 2026-03-01Z reset spans 28 days in UTC
+    /// but 31 in Toronto, so a local calendar makes pace timezone-dependent.
+    private static func monthlyWindowSeconds(endingAt resetsAt: Date?) -> Int? {
+        var calendar = Calendar(identifier: .gregorian)
+        calendar.timeZone = TimeZone(secondsFromGMT: 0) ?? .gmt
+        guard let resetsAt,
+              let start = calendar.date(byAdding: .month, value: -1, to: resetsAt)
+        else { return nil }
+        let seconds = Int(resetsAt.timeIntervalSince(start))
+        return seconds > 0 ? seconds : nil
+    }
+
     private static func makeWindow(_ dto: UsageDTO.WindowDTO?) -> CodexUsage.Window? {
         guard let dto, let used = dto.used_percent, let windowSeconds = dto.limit_window_seconds else {
             return nil

mac/Sources/CodeBurnMenubar/Data/CodexUsage.swift

@@ -31,7 +31,12 @@ struct CodexUsage: Sendable, Equatable {
             case .k12: "K-12"
             case .enterprise: "Enterprise"
             case .edu: "Edu"
-            case let .unknown(raw): raw.isEmpty ? "Subscription" : raw.capitalized
+            case let .unknown(raw):
+                raw.isEmpty
+                    ? "Subscription"
+                    : raw.replacingOccurrences(of: "_", with: " ")
+                         .replacingOccurrences(of: "-", with: " ")
+                         .capitalized
             }
         }
     }
@@ -76,16 +81,55 @@ struct CodexUsage: Sendable, Equatable {
         let nextExpiresAt: Date?
     }
 
+    /// The monthly allowance an admin sets. Credit-metered workspaces report
+    /// `rate_limit: null`, so this is their only limit.
+    struct CreditLimit: Sendable, Equatable {
+        let used: Double
+        let limit: Double
+        let usedPercent: Double        // 0.0 ... 100.0
+        let resetsAt: Date?
+        /// Calendar month the allowance resets on, for pace projection. Not the
+        /// payload's `reset_after_seconds`, which is the time remaining.
+        let windowSeconds: Int?
+        /// Allowance already spent: a hard stop, not a near-limit warning.
+        let reached: Bool
+
+        /// `.halfUp` matches the desktop decoder's `Math.round`.
+        var displayLabel: String {
+            let formatter = NumberFormatter()
+            formatter.numberStyle = .decimal
+            formatter.maximumFractionDigits = 0
+            formatter.roundingMode = .halfUp
+            // `en_US`, not `en_US_POSIX`: the latter drops grouping entirely.
+            formatter.locale = Locale(identifier: "en_US")
+            func text(_ value: Double) -> String {
+                formatter.string(from: NSNumber(value: value)) ?? "\(Int(value.rounded()))"
+            }
+            let base = "Monthly usage limit · \(text(used)) / \(text(limit)) credits"
+            return reached ? "\(base) · limit reached" : base
+        }
+
+        var shortLabel: String {
+            reached ? "Monthly usage limit · limit reached" : "Monthly usage limit"
+        }
+    }
+
     let plan: PlanType
     let primary: Window?
     let secondary: Window?
     let additionalLimits: [AdditionalLimit]
     let creditsBalance: Double?
+    /// Account settles in credits, not dollars, which changes `creditsBalance`.
+    let hasCredits: Bool
+    /// Uncapped on purpose, as distinct from a limit we failed to read.
+    let creditsUnlimited: Bool
+    let creditLimit: CreditLimit?
     let resetCredits: ResetCredits?
     let fetchedAt: Date
 
     static func planType(from raw: String?) -> PlanType {
-        guard let raw = raw?.lowercased() else { return .unknown("") }
+        guard let original = raw?.lowercased() else { return .unknown("") }
+        let raw = normalizePlanType(original)
         switch raw {
         case "guest": return .guest
         case "free": return .free
@@ -101,7 +145,28 @@ struct CodexUsage: Sendable, Equatable {
         case "k12": return .k12
         case "enterprise": return .enterprise
         case "edu": return .edu
+        // Normalized, so an unknown composite reads "Some Future Tier".
         default: return .unknown(raw)
         }
     }
+
+    /// Credit-based-pricing tiers arrive composite (`enterprise_cbp_usage_based`).
+    private static func normalizePlanType(_ raw: String) -> String {
+        var value = raw.trimmingCharacters(in: .whitespacesAndNewlines)
+        for suffix in ["_usage_based", "-usage-based", "_usage-based", "-usage_based"]
+        where value.hasSuffix(suffix) {
+            value.removeLast(suffix.count)
+        }
+        for prefix in ["self_serve_", "self-serve-", "self_serve-", "self-serve_"]
+        where value.hasPrefix(prefix) {
+            value.removeFirst(prefix.count)
+        }
+        for suffix in ["_cbp", "-cbp"] where value.hasSuffix(suffix) {
+            value.removeLast(suffix.count)
+        }
+        for infix in ["_cbp_", "-cbp-", "_cbp-", "-cbp_"] {
+            value = value.replacingOccurrences(of: infix, with: "_")
+        }
+        return value
+    }
 }

mac/Sources/CodeBurnMenubar/Views/HeatmapSection.swift

@@ -2067,7 +2067,7 @@ private struct CodexPlanInsight: View {
                     .font(.system(size: 13, weight: .semibold))
                     .foregroundStyle(.primary)
                 Spacer()
-                if let resetsAt = (usage.primary ?? usage.secondary)?.resetsAt {
+                if let resetsAt = (usage.primary ?? usage.secondary)?.resetsAt ?? usage.creditLimit?.resetsAt {
                     Text("Resets \(relativeReset(resetsAt))")
                         .font(.system(size: 10.5))
                         .foregroundStyle(.secondary)
@@ -2109,6 +2109,26 @@ private struct CodexPlanInsight: View {
                     )
                 }
             }
+            // No rate windows here, so without this row the card is empty.
+            if let credits = usage.creditLimit {
+                UtilizationRow(
+                    label: credits.displayLabel,
+                    percent: credits.usedPercent,
+                    resetsAt: credits.resetsAt,
+                    projection: pace(for: credits)
+                )
+            } else if usage.creditsUnlimited {
+                // Uncapped on purpose, not a failed fetch.
+                HStack(alignment: .firstTextBaseline) {
+                    Text("Credits")
+                        .font(.system(size: 11, weight: .medium))
+                        .foregroundStyle(.secondary)
+                    Spacer()
+                    Text("Unlimited")
+                        .font(.system(size: 10.5))
+                        .foregroundStyle(.secondary)
+                }
+            }
             // Limit-reset credits the account is holding. Hidden at zero so
             // plans that never receive these grants see no extra row.
             if let resets = usage.resetCredits, resets.availableCount > 0 {
@@ -2147,6 +2167,25 @@ private struct CodexPlanInsight: View {
         )
     }
 
+    /// Rate-window pace math over the spend control's calendar month.
+    private func pace(for credits: CodexUsage.CreditLimit) -> WindowProjection? {
+        guard let windowSeconds = credits.windowSeconds,
+              let result = QuotaPace.evaluate(
+                  usedPercent: credits.usedPercent,
+                  resetsAt: credits.resetsAt,
+                  windowSeconds: windowSeconds
+              )
+        else { return nil }
+        return WindowProjection(
+            percent: result.projectedPercent,
+            willOverflow: result.willOverflow,
+            hitsLimitAt: result.hitsLimitAt,
+            source: .linear,
+            deltaPercent: result.deltaPercent,
+            compact: TimeInterval(windowSeconds) <= QuotaPace.etaSuppressionMaxSeconds
+        )
+    }
+
     private func resetCreditsLabel(_ resets: CodexUsage.ResetCredits) -> String {
         let count = "\(resets.availableCount) available"
         guard let next = resets.nextExpiresAt else { return count }

mac/Sources/CodeBurnMenubar/Views/SettingsView.swift

@@ -487,7 +487,7 @@ private struct CodexSettingsTab: View {
                 CodexConnectionRow()
             }
             Section {
-                Text("Codex live-quota tracking reads `~/.codex/auth.json` once on Connect, then keeps a local copy under Application Support so subsequent quota fetches don't re-read the original. Only ChatGPT-mode auth (Plus / Pro / Team / Business) is supported — API-key users are billed per request and have a different reporting surface.")
+                Text("Codex live-quota tracking reads `~/.codex/auth.json` once on Connect, then keeps a local copy under Application Support so subsequent quota fetches don't re-read the original. Only ChatGPT-mode auth (Plus / Pro / Team / Business / Edu / Enterprise) is supported. API-key users are billed per request and have a different reporting surface. Credit-metered workspaces report no rate-limit windows, so their monthly credit allowance is shown instead.")
                     .font(.system(size: 11))
                     .foregroundStyle(.secondary)
             } header: {

mac/Tests/CodeBurnMenubarTests/AppStoreRefreshRecoveryTests.swift

@@ -202,6 +202,56 @@ struct AppStoreRefreshRecoveryTests {
         #expect(store.payload.combined == nil)
     }
 
+    @Test("menubar badge shows the combined total under combined scope")
+    func menubarBadgeShowsCombinedTotal() {
+        let store = AppStore()
+        store.suppressRefreshesForTesting()
+        let period = store.menubarPeriod
+        // Local badge figure and a higher cross-device combined total, both for
+        // the badge's period.
+        store.setCachedPayloadForTesting(
+            menubarPayload(cost: 30),
+            scope: .local,
+            period: period,
+            provider: .all,
+            fetchedAt: Date()
+        )
+        store.setCachedPayloadForTesting(
+            menubarPayload(cost: 30, combined: combinedUsage(cost: 75)),
+            scope: .combined,
+            period: period,
+            provider: .all,
+            fetchedAt: Date()
+        )
+
+        // Local scope: no combined total, so the badge renders the local figure.
+        store.selectedScope = .local
+        #expect(store.menubarBadgeCombined == nil)
+
+        // Combined scope: the badge total is the cross-device aggregate ($75),
+        // not the local $30 — this is the fix for the badge trailing the popover.
+        store.selectedScope = .combined
+        #expect(store.menubarBadgeCombined?.cost == 75)
+    }
+
+    @Test("menubar badge falls back to local when no combined payload is cached")
+    func menubarBadgeFallsBackWhenCombinedMissing() {
+        let store = AppStore()
+        store.suppressRefreshesForTesting()
+        let period = store.menubarPeriod
+        store.setCachedPayloadForTesting(
+            menubarPayload(cost: 30),
+            scope: .local,
+            period: period,
+            provider: .all,
+            fetchedAt: Date()
+        )
+        // Combined scope selected but no combined payload cached yet (cold cache
+        // or an unreachable peer): the badge must fall back to the local figure.
+        store.selectedScope = .combined
+        #expect(store.menubarBadgeCombined == nil)
+    }
+
     @Test("switching to combined resets selected provider to all")
     func switchingToCombinedResetsSelectedProviderToAll() {
         let store = AppStore()

mac/Tests/CodeBurnMenubarTests/CodexPlanParsingTests.swift

@@ -0,0 +1,248 @@
+import Foundation
+import XCTest
+@testable import CodeBurnMenubar
+
+/// `plan_type` parsing and the credit-metered branch of the wham/usage decoder.
+final class CodexPlanParsingTests: XCTestCase {
+    private func decode(_ json: String) throws -> CodexUsage {
+        try CodexSubscriptionService.decodeUsage(data: Data(json.utf8))
+    }
+
+    func testKnownTiersMapToDisplayNames() {
+        let expected: [String: String] = [
+            "guest": "Guest", "free": "Free", "go": "Go", "plus": "Plus", "pro": "Pro",
+            "prolite": "Pro Lite", "pro_lite": "Pro Lite", "pro-lite": "Pro Lite",
+            "free_workspace": "Free Workspace", "team": "Team", "business": "Business",
+            "education": "Education", "quorum": "Quorum", "k12": "K-12",
+            "enterprise": "Enterprise", "edu": "Edu",
+        ]
+        for (raw, display) in expected {
+            XCTAssertEqual(CodexUsage.planType(from: raw).displayName, display, "plan_type: \(raw)")
+        }
+    }
+
+    func testTierMatchingIsCaseInsensitive() {
+        XCTAssertEqual(CodexUsage.planType(from: "pLuS"), .plus)
+        XCTAssertEqual(CodexUsage.planType(from: "ENTERPRISE"), .enterprise)
+    }
+
+    func testCreditBasedPricingCompositesNormalize() {
+        XCTAssertEqual(CodexUsage.planType(from: "enterprise_cbp_usage_based"), .enterprise)
+        XCTAssertEqual(CodexUsage.planType(from: "self_serve_business_usage_based"), .business)
+        XCTAssertEqual(CodexUsage.planType(from: "business_cbp"), .business)
+    }
+
+    func testHyphenSeparatedCompositesNormalizeToo() {
+        XCTAssertEqual(CodexUsage.planType(from: "enterprise-cbp-usage-based"), .enterprise)
+        XCTAssertEqual(CodexUsage.planType(from: "self-serve-business-usage-based"), .business)
+        XCTAssertEqual(CodexUsage.planType(from: "business-cbp"), .business)
+    }
+
+    func testUnknownTierNormalizesAndTitleCasesLikeTheDesktopDecoder() {
+        XCTAssertEqual(CodexUsage.planType(from: "some_future_tier_usage_based"),
+                       .unknown("some_future_tier"))
+        XCTAssertEqual(CodexUsage.planType(from: "some_future_tier_usage_based").displayName,
+                       "Some Future Tier")
+        XCTAssertEqual(CodexUsage.planType(from: nil), .unknown(""))
+        XCTAssertEqual(CodexUsage.planType(from: nil).displayName, "Subscription")
+    }
+
+    /// Captured from a live ChatGPT Enterprise workspace (identifiers replaced).
+    private let enterprisePayload = #"""
+    {
+      "plan_type": "business",
+      "rate_limit": null,
+      "code_review_rate_limit": null,
+      "additional_rate_limits": null,
+      "credits": {
+        "has_credits": false, "unlimited": false, "overage_limit_reached": false,
+        "balance": null, "approx_local_messages": null, "approx_cloud_messages": null
+      },
+      "spend_control": {
+        "reached": false,
+        "individual_limit": {
+          "source": "workspace_spend_controls",
+          "limit": "10000",
+          "used": "3028.9909675121307",
+          "remaining": "6971.009032487869",
+          "used_percent": 30,
+          "remaining_percent": 70,
+          "reset_after_seconds": 441896,
+          "reset_at": 1785542400
+        }
+      },
+      "rate_limit_reset_credits": {"available_count": 0, "applicable_available_count": 0}
+    }
+    """#
+
+    func testEnterprisePayloadDecodesTheSpendControlLimit() throws {
+        let usage = try decode(enterprisePayload)
+        XCTAssertNil(usage.primary)
+        XCTAssertNil(usage.secondary)
+        XCTAssertTrue(usage.additionalLimits.isEmpty)
+
+        let credits = try XCTUnwrap(usage.creditLimit)
+        XCTAssertEqual(credits.limit, 10_000)
+        XCTAssertEqual(credits.used, 3028.9909675121307, accuracy: 0.0001)
+        XCTAssertEqual(credits.usedPercent, 30)
+        XCTAssertEqual(credits.resetsAt, Date(timeIntervalSince1970: 1_785_542_400))
+        XCTAssertFalse(credits.reached)
+        // July 2026, not the payload's `reset_after_seconds`.
+        XCTAssertEqual(try XCTUnwrap(credits.windowSeconds), 31 * 86_400)
+
+        XCTAssertEqual(usage.plan, .business)
+        XCTAssertNil(usage.creditsBalance)
+        XCTAssertFalse(usage.hasCredits)
+        XCTAssertFalse(usage.creditsUnlimited)
+    }
+
+    func testSpendControlIsReadAtEveryObservedPosition() throws {
+        let bodies = [
+            #"{"spend_control": {"individual_limit": {"limit": 10000, "used_percent": 25}}}"#,
+            #"{"spend_control": {"individualLimit": {"limit": 10000, "usedPercent": 25}}}"#,
+            #"{"individual_limit": {"limit": 10000, "used_percent": 25}}"#,
+            #"{"rate_limit": {"individual_limit": {"limit": 10000, "used_percent": 25}}}"#,
+        ]
+        for body in bodies {
+            let credits = try XCTUnwrap(decode(body).creditLimit, body)
+            XCTAssertEqual(credits.usedPercent, 25, body)
+            XCTAssertEqual(credits.used, 2500, body)
+        }
+    }
+
+    func testPercentFallsBackThroughRemainingPercentThenRawRatio() throws {
+        let fromRemaining = try XCTUnwrap(
+            decode(#"{"spend_control": {"individual_limit": {"limit": 10000, "remaining_percent": 70}}}"#).creditLimit)
+        XCTAssertEqual(fromRemaining.usedPercent, 30, accuracy: 0.0001)
+
+        let fromRatio = try XCTUnwrap(
+            decode(#"{"spend_control": {"individual_limit": {"limit": 400, "used": 100}}}"#).creditLimit)
+        XCTAssertEqual(fromRatio.usedPercent, 25, accuracy: 0.0001)
+    }
+
+    func testUnusableSpendControlYieldsNoRow() throws {
+        let bodies = [
+            #"{"spend_control": {"individual_limit": {"limit": 0, "used": 5}}}"#,
+            #"{"spend_control": {"individual_limit": {"limit": null}}}"#,
+            #"{"spend_control": {"individual_limit": {"used_percent": 40}}}"#,
+            #"{"spend_control": {"individual_limit": null}}"#,
+            #"{"spend_control": null}"#,
+            "{}",
+        ]
+        for body in bodies {
+            XCTAssertNil(try decode(body).creditLimit, body)
+        }
+    }
+
+    func testAllowanceWithoutAnyUsageSignalYieldsNoRow() throws {
+        let body = #"{"spend_control": {"individual_limit": {"limit": 10000, "reset_at": 1785542400}}}"#
+        XCTAssertNil(try decode(body).creditLimit)
+    }
+
+    func testBlankNumericStringIsAbsentNotZero() throws {
+        let credits = try XCTUnwrap(decode(#"""
+        {"spend_control": {"individual_limit": {"limit": "10000", "used": "  ", "used_percent": 30}}}
+        """#).creditLimit)
+        XCTAssertEqual(credits.used, 3000, accuracy: 0.001)
+        XCTAssertNil(try decode(#"{"spend_control": {"individual_limit": {"limit": ""}}}"#).creditLimit)
+    }
+
+    func testOverageKeepsCountsTruthfulWhileClampingPercent() throws {
+        let credits = try XCTUnwrap(decode(#"""
+        {"spend_control": {"individual_limit": {"limit": 10000, "used": 12000, "used_percent": 120}}}
+        """#).creditLimit)
+        XCTAssertEqual(credits.used, 12000, accuracy: 0.001)
+        XCTAssertEqual(credits.usedPercent, 100)
+    }
+
+    func testMonthWindowIsTimezoneIndependent() throws {
+        // 2026-03-01Z reads as 28 days in UTC but 31 through a local calendar.
+        let body = #"{"spend_control": {"individual_limit": {"limit": 100, "used_percent": 10, "reset_at": 1772323200}}}"#
+        XCTAssertEqual(try XCTUnwrap(decode(body).creditLimit?.windowSeconds), 28 * 86_400)
+    }
+
+    func testOutOfRangeNumbersDoNotTrap() throws {
+        // `Int(_:)` on 1e100 traps, and a trap is not a catchable error.
+        for body in [
+            #"{"spend_control": {"individual_limit": {"limit": 100, "used_percent": 10, "reset_at": 1e100}}}"#,
+            #"{"spend_control": {"individual_limit": {"limit": "Infinity", "used_percent": 10}}}"#,
+            #"{"spend_control": {"individual_limit": {"limit": 100, "used_percent": "NaN"}}}"#,
+        ] {
+            _ = try? decode(body)
+        }
+        let huge = #"{"spend_control": {"individual_limit": {"limit": 100, "used_percent": 10, "reset_at": "1e100"}}}"#
+        XCTAssertNil(try XCTUnwrap(decode(huge).creditLimit).resetsAt)
+    }
+
+    func testPercentOnlyOverageKeepsTheImpliedCount() throws {
+        let body = #"{"spend_control": {"individual_limit": {"limit": 10000, "used_percent": 120}}}"#
+        let credits = try XCTUnwrap(decode(body).creditLimit)
+        XCTAssertEqual(credits.used, 12000, accuracy: 0.001)
+        XCTAssertEqual(credits.usedPercent, 100)
+        XCTAssertEqual(credits.displayLabel, "Monthly usage limit · 12,000 / 10,000 credits")
+    }
+
+    func testOneMalformedAdditionalLimitDoesNotDiscardTheRest() throws {
+        let body = #"""
+        {"additional_rate_limits": [
+          null,
+          {"limit_name": "Spark", "rate_limit": {"primary_window": {"used_percent": 40, "limit_window_seconds": 18000}}}
+        ]}
+        """#
+        XCTAssertEqual(try decode(body).additionalLimits.map(\.name), ["Spark"])
+    }
+
+    func testReachedSpendControlIsCarriedThrough() throws {
+        let credits = try XCTUnwrap(decode(#"""
+        {"spend_control": {"reached": true, "individual_limit": {"limit": 10000, "used_percent": 100}}}
+        """#).creditLimit)
+        XCTAssertTrue(credits.reached)
+        XCTAssertEqual(credits.usedPercent, 100)
+    }
+
+    func testCreditFlagsAndMixedNumberEncodings() throws {
+        let usage = try decode(#"""
+        {"credits": {"has_credits": true, "unlimited": true, "balance": "3410.40"}}
+        """#)
+        XCTAssertTrue(usage.hasCredits)
+        XCTAssertTrue(usage.creditsUnlimited)
+        XCTAssertEqual(try XCTUnwrap(usage.creditsBalance), 3410.40, accuracy: 0.0001)
+    }
+
+    func testRateWindowsStillDecodeAlongsideASpendControl() throws {
+        let usage = try decode(#"""
+        {
+          "plan_type": "plus",
+          "rate_limit": {
+            "primary_window": {"used_percent": 20, "reset_at": 1800000000, "limit_window_seconds": 18000}
+          },
+          "spend_control": {"individual_limit": {"limit": 10000, "used_percent": 30}}
+        }
+        """#)
+        XCTAssertEqual(usage.primary?.usedPercent, 20)
+        XCTAssertEqual(usage.primary?.windowLabel, "5-hour")
+        XCTAssertEqual(usage.creditLimit?.usedPercent, 30)
+    }
+
+    func testOnlyAZeroCountSkipsTheCompanionRequest() {
+        let zero = #"{"rate_limit_reset_credits": {"available_count": 0}}"#
+        let some = #"{"rate_limit_reset_credits": {"available_count": 3}}"#
+        XCTAssertEqual(CodexSubscriptionService.inlineResetCreditsShortcut(data: Data(zero.utf8))?.availableCount, 0)
+        XCTAssertNil(CodexSubscriptionService.inlineResetCreditsShortcut(data: Data(some.utf8)))
+        XCTAssertNil(CodexSubscriptionService.inlineResetCreditsShortcut(data: Data("{}".utf8)))
+        XCTAssertEqual(CodexSubscriptionService.inlineResetCredits(data: Data(some.utf8))?.availableCount, 3)
+    }
+
+    func testInlineResetCreditsParseFromTheUsagePayload() {
+        let inline = CodexSubscriptionService.inlineResetCredits(data: Data(enterprisePayload.utf8))
+        XCTAssertEqual(inline?.availableCount, 0)
+        XCTAssertNil(inline?.nextExpiresAt)
+    }
+
+    func testInlineResetCreditsAbsentSignalsFallback() {
+        XCTAssertNil(CodexSubscriptionService.inlineResetCredits(data: Data("{}".utf8)))
+        XCTAssertNil(CodexSubscriptionService.inlineResetCredits(data: Data("not json".utf8)))
+        XCTAssertNil(CodexSubscriptionService.inlineResetCredits(
+            data: Data(#"{"rate_limit_reset_credits": {}}"#.utf8)))
+    }
+}

mac/Tests/CodeBurnMenubarTests/CodexQuotaSummaryTests.swift

@@ -0,0 +1,85 @@
+import Foundation
+import Testing
+@testable import CodeBurnMenubar
+
+private func usage(
+    balance: Double? = nil,
+    hasCredits: Bool = false,
+    unlimited: Bool = false,
+    creditLimit: CodexUsage.CreditLimit? = nil
+) -> CodexUsage {
+    CodexUsage(
+        plan: .business,
+        primary: nil,
+        secondary: nil,
+        additionalLimits: [],
+        creditsBalance: balance,
+        hasCredits: hasCredits,
+        creditsUnlimited: unlimited,
+        creditLimit: creditLimit,
+        resetCredits: nil,
+        fetchedAt: Date()
+    )
+}
+
+private func limit(used: Double, of total: Double, reached: Bool = false) -> CodexUsage.CreditLimit {
+    CodexUsage.CreditLimit(
+        used: used,
+        limit: total,
+        usedPercent: used / total * 100,
+        resetsAt: Date(timeIntervalSince1970: 1_785_542_400),
+        windowSeconds: 31 * 86_400,
+        reached: reached
+    )
+}
+
+@MainActor
+private func store(_ usage: CodexUsage) -> AppStore {
+    let store = AppStore()
+    store.codexUsage = usage
+    // Pinned: the default depends on whether this machine has Codex connected.
+    store.codexLoadState = .loaded
+    return store
+}
+
+@MainActor
+struct CodexQuotaSummaryTests {
+    @Test("credit-settled balances group without a currency symbol")
+    func creditSettledBalanceIsGroupedAndUnprefixed() {
+        let store = store(usage(balance: 3410.4, hasCredits: true))
+        #expect(store.quotaSummary(for: .codex)?.footerLines == ["Credits remaining · 3,410"])
+    }
+
+    @Test("dollar balances keep the currency formatting")
+    func dollarBalanceKeepsCurrencyFormatting() {
+        let store = store(usage(balance: 3410.4, hasCredits: false))
+        #expect(store.quotaSummary(for: .codex)?.footerLines == ["Credits remaining · $3,410.40"])
+    }
+
+    @Test("an exact-half credit balance rounds up, matching the desktop decoder")
+    func creditBalanceRoundsHalfUp() {
+        let store = store(usage(balance: 3410.5, hasCredits: true))
+        #expect(store.quotaSummary(for: .codex)?.footerLines == ["Credits remaining · 3,411"])
+    }
+
+    @Test("an uncapped credit account says so instead of showing nothing")
+    func uncappedAccountSaysUnlimited() {
+        let store = store(usage(hasCredits: true, unlimited: true))
+        #expect(store.quotaSummary(for: .codex)?.footerLines == ["Credits · Unlimited"])
+    }
+
+    @Test("the allowance row drives the chip with the short label")
+    func allowanceRowUsesTheShortLabel() {
+        let store = store(usage(creditLimit: limit(used: 3033, of: 10_000)))
+        let summary = store.quotaSummary(for: .codex)
+        #expect(summary?.primary?.label == "Monthly usage limit")
+        #expect(summary?.primary?.percent == 0.3033)
+        #expect(summary?.footerLines.isEmpty == true)
+    }
+
+    @Test("a spent-out allowance is called out on the chip")
+    func reachedAllowanceIsCalledOut() {
+        let store = store(usage(creditLimit: limit(used: 10_000, of: 10_000, reached: true)))
+        #expect(store.quotaSummary(for: .codex)?.primary?.label == "Monthly usage limit · limit reached")
+    }
+}

src/cache-refresh-lock.ts

@@ -1,4 +1,4 @@
-import { randomBytes } from 'crypto'
+import { createHash, randomBytes } from 'crypto'
 import { existsSync } from 'fs'
 import { mkdir, open, readFile, stat, unlink, utimes, writeFile } from 'fs/promises'
 import { homedir } from 'os'
@@ -81,6 +81,13 @@ async function retryWindowsMutation(operation: () => Promise<void>, sleep: (ms:
   return false
 }
 
+// The directory entry becomes visible before the awaited body write, so the
+// file is briefly observable at zero bytes. Deliberately left as is: a corrupt
+// body is only ever recovered once its mtime is older than staleMs, and this
+// window is milliseconds wide on a file whose mtime is by definition now, so
+// no observer can reach the age gate through it. Closing it would mean
+// link()ing a temp file into place, which is not portable to filesystems
+// without hard links.
 async function createExclusive(path: string, body: string): Promise<'created' | 'exists' | 'unavailable'> {
   try {
     const handle = await open(path, 'wx', 0o600)
@@ -92,7 +99,24 @@ async function createExclusive(path: string, body: string): Promise<'created' |
   }
 }
 
-type Observation = { record: LockRecord; mtimeMs: number }
+// A null record is a body whose stat bracket agreed across the read and that
+// still does not parse into a lock record: a corrupt leftover of 0 bytes, a
+// truncation, or a wrong shape. The bracket is a heuristic, not proof that the
+// read was whole — a same-size rewrite moves neither size nor (on a coarse
+// filesystem) mtime — which is why nothing here treats a single read as
+// authoritative. It owns nothing, but it is a real file with a
+// real mtime, not an infrastructure failure — classifying it 'unavailable'
+// routed every later refresh to the read-only path and froze ingestion. It
+// carries no authority: it is only ever recovered through the unmodified
+// staleness gate, exactly like an abandoned but well-formed lock.
+//
+// `digest` fingerprints the exact bytes. A corrupt body has no token, so
+// token equality between two corrupt observations degenerates to
+// `undefined === undefined`, and mtime granularity is coarse on some
+// filesystems (measured on macOS: a 2s grid on FAT32, 10ms on exFAT, sub-ms on
+// APFS — and on all three a same-size rewrite moves neither mtime nor size), so
+// mtime is not a reliable change signal on its own.
+type Observation = { record: LockRecord | null; mtimeMs: number; digest: string }
 type ObservationResult = Observation | 'missing' | 'changing' | 'unavailable'
 
 async function observe(path: string): Promise<ObservationResult> {
@@ -100,6 +124,7 @@ async function observe(path: string): Promise<ObservationResult> {
   // written, and heartbeat rewrites briefly truncate it. Treat that bounded
   // transition as contention, not broken infrastructure.
   let sawChange = false
+  let corrupt: Observation | null = null
   for (let attempt = 0; attempt < 3; attempt++) {
     try {
       const before = await stat(path)
@@ -110,10 +135,23 @@ async function observe(path: string): Promise<ObservationResult> {
         await delay(1)
         continue
       }
-      const parsed = JSON.parse(raw) as Partial<LockRecord>
-      if (typeof parsed.pid === 'number' && typeof parsed.token === 'string' && typeof parsed.at === 'number') {
-        return { record: { pid: parsed.pid, token: parsed.token, at: parsed.at }, mtimeMs: after.mtimeMs }
+      const digest = createHash('sha1').update(raw).digest('hex')
+      // A body that is valid JSON of the wrong shape is corrupt like any other,
+      // including one written by a future version with a different record
+      // shape. That is safe precisely because staleness is never waived: a
+      // foreign version's LIVE lock keeps its mtime fresh through its own
+      // heartbeat, so it is never taken — both versions just degrade to the
+      // read-only path. Only an abandoned one is recovered, and a lock record
+      // is per-run state with nothing in it worth preserving.
+      let parsed: Partial<LockRecord> | undefined
+      try { parsed = JSON.parse(raw) as Partial<LockRecord> } catch { parsed = undefined }
+      if (parsed && typeof parsed.pid === 'number' && typeof parsed.token === 'string' && typeof parsed.at === 'number') {
+        return { record: { pid: parsed.pid, token: parsed.token, at: parsed.at }, mtimeMs: after.mtimeMs, digest }
       }
+      // Keep the most recent corrupt read. It is not evidence of stability on
+      // its own: tryTakeover re-observes under the guard and compares with
+      // sameObservation before acting, so stability is proven there, not here.
+      corrupt = { record: null, mtimeMs: after.mtimeMs, digest }
     } catch (err) {
       if (isMissingError(err)) return 'missing'
       const code = (err as NodeJS.ErrnoException | undefined)?.code
@@ -121,11 +159,19 @@ async function observe(path: string): Promise<ObservationResult> {
     }
     await delay(1)
   }
-  return sawChange ? 'changing' : 'unavailable'
+  // Contention outranks corruption: a body seen mid-rewrite is a live owner's,
+  // and the caller must poll rather than treat it as recoverable.
+  if (sawChange) return 'changing'
+  return corrupt ?? 'unavailable'
 }
 
 function sameObservation(a: Observation, b: Observation): boolean {
-  return a.record.token === b.record.token && a.mtimeMs === b.mtimeMs
+  // A corrupt body and an owned one are never "the same observation", even
+  // though `a.record?.token === b.record?.token` cannot tell them apart once
+  // both sides are corrupt. Compare that boundary explicitly, then require the
+  // bytes themselves to match, so "unchanged" survives a coarse mtime.
+  if ((a.record === null) !== (b.record === null)) return false
+  return a.record?.token === b.record?.token && a.mtimeMs === b.mtimeMs && a.digest === b.digest
 }
 
 let singleFlightTail: Promise<void> = Promise.resolve()
@@ -209,7 +255,7 @@ export async function acquireCacheRefreshLock(options: RefreshLockOptions = {}):
       if (current === 'missing') return true
       if (current === 'changing') return false
       if (current === 'unavailable') return false
-      if (current.record.token !== token) return true
+      if (current.record?.token !== token) return true
       return retryWindowsMutation(() => unlink(lockPath), sleep)
     } finally {
       await retryWindowsMutation(() => unlink(takeoverPath), sleep)
@@ -221,7 +267,7 @@ export async function acquireCacheRefreshLock(options: RefreshLockOptions = {}):
     if (guard !== 'created') return false
     try {
       const current = await observe(lockPath)
-      return current !== 'missing' && current !== 'changing' && current !== 'unavailable' && current.record.token === token
+      return current !== 'missing' && current !== 'changing' && current !== 'unavailable' && current.record?.token === token
     } finally {
       await retryWindowsMutation(() => unlink(takeoverPath), sleep)
     }
@@ -238,7 +284,23 @@ export async function acquireCacheRefreshLock(options: RefreshLockOptions = {}):
         if (guard !== 'created') { heartbeatRunning = false; return }
         try {
           const current = await observe(lockPath)
-          if (current === 'missing' || current === 'changing' || current === 'unavailable' || current.record.token !== token) return
+          if (current === 'missing' || current === 'changing' || current === 'unavailable') return
+          // A corrupt body is NOT ours to rewrite, even though no parseable
+          // token contradicts us. Holding the takeover guard excludes the other
+          // guard-takers, but NOT createExclusive, which publishes a directory
+          // entry before its body — so an unparseable body may be a successor's
+          // lock a millisecond from being written, or a foreign version's whose
+          // record shape we cannot read. Stamping our token over it made this
+          // process an owner again after it had been legitimately replaced:
+          // verifyStillOwner then answered true for a displaced writer, and
+          // release()'s removeIfOwned deleted the live successor's lock.
+          //
+          // So a body we cannot prove is ours ends our ownership. The mtime
+          // stops advancing, the fence refuses to publish (the parse is
+          // discarded, which is the fail-safe direction), and a successor
+          // recovers the lock one staleMs later through the age gate. Losing a
+          // parse is the correct price for never having two owners.
+          if (current.record === null || current.record.token !== token) return
           await writeFile(lockPath, body(), { encoding: 'utf-8' })
           const now = new Date(clock.wallNow())
           await utimes(lockPath, now, now)
@@ -325,6 +387,12 @@ export async function acquireCacheRefreshLock(options: RefreshLockOptions = {}):
         continue
       }
 
+      // A corrupt observation takes this path unchanged. Staleness is never
+      // waived for it: an abandoned corrupt lock is older than staleMs and is
+      // recovered here, while a corrupt body younger than that is waited out
+      // and left alone, because it may belong to a live owner whose heartbeat
+      // will repair it. Worst case we time out and serve the prior snapshot
+      // read-only for one staleMs window instead of freezing forever.
       const age = Math.max(0, clock.wallNow() - observation.mtimeMs)
       if (age > staleMs) {
         const takeover = await tryTakeover(observation)

src/codex-cache.ts

@@ -11,9 +11,10 @@ import type { ParsedProviderCall } from './providers/types.js'
 // v5: also attribute CLI-wrapped MCP calls (`mcp-cli call server tool`) that
 // Codex logs as a plain exec_command (issue #478 follow-up). Force a re-parse
 // so sessions cached under v4 pick up the CLI-MCP attribution.
-// v6: rich-session-capture — per-call locAdded/locRemoved/editFailed from
+// v6/v7: rich-session-capture — per-call locAdded/locRemoved/editFailed from
 // patch_apply_end. Sessions cached under v5 lack these fields; re-parse to add.
-const CODEX_CACHE_VERSION = 7
+// v8: persist native MCP timing and compact invocation attribution.
+const CODEX_CACHE_VERSION = 8
 const CACHE_FILE = 'codex-results.json'
 
 type FileFingerprint = { mtimeMs: number; sizeBytes: number }

src/codex-throughput.ts

@@ -0,0 +1,521 @@
+import { open, stat } from 'node:fs/promises'
+import { StringDecoder } from 'node:string_decoder'
+
+export type CodexThroughputPoint = {
+  timestamp: string
+  model?: string
+  outputTokens: number
+  reasoningTokens: number
+  generatedTokens: number
+  taskGeneratedTokens?: number
+  elapsedSeconds?: number
+  generatedTokensPerSecond?: number
+  activeDurationSeconds?: number
+  activeGeneratedTokensPerSecond?: number
+  toolWaitSeconds?: number
+}
+
+type TokenUsage = {
+  output_tokens?: number
+  reasoning_output_tokens?: number
+  total_tokens?: number
+}
+
+type RolloutLine = {
+  type?: string
+  timestamp?: string
+  payload?: {
+    type?: string
+    turn_id?: string
+    call_id?: string
+    started_at?: number
+    duration_ms?: number
+    duration?: { secs?: number; nanos?: number } | string
+    model?: string
+    forked_from_id?: string
+    info?: {
+      last_token_usage?: TokenUsage
+      total_token_usage?: TokenUsage
+    }
+  }
+}
+
+const CHUNK_BYTES = 64 * 1024
+const MAX_PENDING_LINE_CHARS = 4 * 1024 * 1024
+const TRUNCATION_MARKER = '__CODEBURN_TRUNCATED_LINE__'
+
+function rawString(source: string, field: string): string | undefined {
+  const match = new RegExp(`"${field}"\\s*:\\s*"((?:\\\\.|[^"\\\\])*)"`).exec(source)
+  if (!match) return undefined
+  try { return JSON.parse(`"${match[1]}"`) as string } catch { return undefined }
+}
+
+function rawNumber(source: string, field: string): number | undefined {
+  const match = new RegExp(`"${field}"\\s*:\\s*(-?\\d+(?:\\.\\d+)?)`).exec(source)
+  if (!match) return undefined
+  const value = Number(match[1])
+  return Number.isFinite(value) ? value : undefined
+}
+
+function compactUsage(source: string, field: 'last_token_usage' | 'total_token_usage'): TokenUsage | undefined {
+  const index = source.indexOf(`"${field}"`)
+  if (index < 0) return undefined
+  const body = source.slice(index, index + 4096)
+  return {
+    output_tokens: rawNumber(body, 'output_tokens'),
+    reasoning_output_tokens: rawNumber(body, 'reasoning_output_tokens'),
+    total_tokens: rawNumber(body, 'total_tokens'),
+  }
+}
+
+function parseRawDurationValue(value: string): number | undefined {
+  const objectMatch = /^\s*\{\s*"secs"\s*:\s*(-?\d+(?:\.\d+)?)\s*,\s*"nanos"\s*:\s*(-?\d+(?:\.\d+)?)\s*\}/.exec(value)
+  if (objectMatch) {
+    const seconds = Number(objectMatch[1])
+    const nanos = Number(objectMatch[2])
+    if (Number.isFinite(seconds) && Number.isFinite(nanos)) return seconds * 1000 + nanos / 1e6
+  }
+  const stringMatch = /^\s*"(\d+(?:\.\d+)?)(ms|s)?"/.exec(value)
+  if (stringMatch) {
+    const parsed = Number(stringMatch[1])
+    if (Number.isFinite(parsed)) return parsed * (stringMatch[2] === 's' ? 1000 : 1)
+  }
+  const numberMatch = /^\s*(-?\d+(?:\.\d+)?)/.exec(value)
+  if (numberMatch) {
+    const parsed = Number(numberMatch[1])
+    if (Number.isFinite(parsed)) return parsed
+  }
+  return undefined
+}
+
+function durationMs(payload: RolloutLine['payload']): number | undefined {
+  if (!payload) return undefined
+  if (typeof payload.duration_ms === 'number' && Number.isFinite(payload.duration_ms)) return payload.duration_ms
+  if (typeof payload.duration === 'object' && payload.duration) {
+    const seconds = payload.duration.secs
+    const nanos = payload.duration.nanos
+    if (typeof seconds === 'number' && typeof nanos === 'number' && Number.isFinite(seconds) && Number.isFinite(nanos)) {
+      return seconds * 1000 + nanos / 1e6
+    }
+  }
+  if (typeof payload.duration === 'string') {
+    const match = /^(\d+(?:\.\d+)?)(ms|s)?$/.exec(payload.duration.trim())
+    if (match) return Number(match[1]) * (match[2] === 's' ? 1000 : 1)
+  }
+  return undefined
+}
+
+function mergeToolIntervals(intervals: Array<[number, number]>, durationMs: number, taskStartedAt?: number, taskCompletedAt?: number): number {
+  const windowStart = taskStartedAt ?? (taskCompletedAt !== undefined ? taskCompletedAt - durationMs : undefined)
+  const windowEnd = windowStart !== undefined ? windowStart + durationMs : undefined
+  const clipped = intervals.map(([start, end]) => [
+    windowStart !== undefined ? Math.max(start, windowStart) : start,
+    windowEnd !== undefined ? Math.min(end, windowEnd) : end,
+  ] as [number, number]).filter(([start, end]) => end > start)
+  const merged = clipped.sort((a, b) => a[0] - b[0]).reduce<Array<[number, number]>>((result, interval) => {
+    const previous = result.at(-1)
+    if (previous && interval[0] <= previous[1]) previous[1] = Math.max(previous[1], interval[1])
+    else result.push([...interval])
+    return result
+  }, [])
+  return Math.min(durationMs, merged.reduce((total, [start, end]) => total + end - start, 0))
+}
+
+function parseLine(line: string): RolloutLine | null {
+  const payloadStart = line.indexOf('"payload"')
+  const payloadHead = payloadStart >= 0 ? line.slice(payloadStart) : line
+  if (line.length > 256 * 1024 || line.startsWith(TRUNCATION_MARKER)) {
+    const payloadType = rawString(payloadHead, 'type')
+    const infoStart = payloadHead.indexOf('"info"')
+    const info = infoStart >= 0 ? payloadHead.slice(infoStart) : ''
+    return {
+      type: rawString(line, 'type'),
+      timestamp: rawString(line, 'timestamp'),
+      payload: {
+        type: payloadType,
+        turn_id: rawString(payloadHead, 'turn_id'),
+        call_id: rawString(payloadHead, 'call_id'),
+        started_at: rawNumber(payloadHead, 'started_at'),
+        duration_ms: rawNumber(payloadHead, 'duration_ms'),
+        duration: rawString(payloadHead, 'duration') ?? (rawNumber(payloadHead, 'secs') !== undefined
+          ? { secs: rawNumber(payloadHead, 'secs'), nanos: rawNumber(payloadHead, 'nanos') }
+          : undefined),
+        model: rawString(payloadHead, 'model'),
+        forked_from_id: rawString(payloadHead, 'forked_from_id'),
+        info: {
+          last_token_usage: compactUsage(info, 'last_token_usage'),
+          total_token_usage: compactUsage(info, 'total_token_usage'),
+        },
+      },
+    }
+  }
+  try {
+    return JSON.parse(line) as RolloutLine
+  } catch {
+    return null
+  }
+}
+
+/**
+ * Estimate generated tokens/sec from a Codex rollout's persisted checkpoints.
+ * Codex JSONL has no per-token timestamps, so this is deliberately a
+ * checkpoint-to-checkpoint estimate, not live decode speed.
+ */
+type ThroughputState = {
+  model?: string
+  previousTotal?: number
+  previousOutput: number
+  previousReasoning: number
+  previousTimestamp?: number
+  currentTaskGenerated: number
+  currentTaskToolIntervals: Array<[number, number]>
+  currentTaskStartedAt?: number
+  toolStarts: Map<string, number>
+  latestPoint?: CodexThroughputPoint
+  points: CodexThroughputPoint[]
+  forkCutoffMs?: number
+}
+
+function newThroughputState(): ThroughputState {
+  return {
+    previousOutput: 0,
+    previousReasoning: 0,
+    currentTaskGenerated: 0,
+    currentTaskToolIntervals: [],
+    toolStarts: new Map(),
+    points: [],
+  }
+}
+
+/**
+ * Incrementally parses a rollout. Watch mode feeds only newly appended bytes
+ * to this reader, so a growing JSONL file is not reparsed from byte zero.
+ */
+export class CodexThroughputReader {
+  private offset = 0
+  private pending = ''
+  private decoder = new StringDecoder('utf8')
+  private pendingDurationMs: number | undefined
+  private scanDepth = 0
+  private scanPayloadDepth: number | undefined
+  private scanInString = false
+  private scanEscape = false
+  private scanString = ''
+  private scanLastString = ''
+  private scanAwaitingColon = false
+  private scanCurrentKey: string | undefined
+  private scanCapture: { mode: 'string' | 'object' | 'primitive'; text: string; depth: number } | undefined
+  private state = newThroughputState()
+
+  reset(): void {
+    this.offset = 0
+    this.pending = ''
+    this.decoder = new StringDecoder('utf8')
+    this.pendingDurationMs = undefined
+    this.scanDepth = 0
+    this.scanPayloadDepth = undefined
+    this.scanInString = false
+    this.scanEscape = false
+    this.scanString = ''
+    this.scanLastString = ''
+    this.scanAwaitingColon = false
+    this.scanCurrentKey = undefined
+    this.scanCapture = undefined
+    this.state = newThroughputState()
+  }
+
+  private finishDurationCapture(): void {
+    if (!this.scanCapture) return
+    const value = this.scanCapture.mode === 'string' ? `"${this.scanCapture.text}"` : this.scanCapture.text
+    const parsed = parseRawDurationValue(value)
+    if (parsed !== undefined && this.pendingDurationMs === undefined) this.pendingDurationMs = parsed
+    this.scanCapture = undefined
+  }
+
+  private scanDurationSegment(source: string): void {
+    for (let i = 0; i < source.length; i++) {
+      const char = source[i]!
+      if (this.scanInString) {
+        if (this.scanEscape) {
+          this.scanEscape = false
+          if (this.scanCapture?.mode === 'object') this.scanCapture.text += char
+          else if (this.scanCapture?.mode === 'string') this.scanCapture.text += char
+          else this.scanString += char
+          continue
+        }
+        if (char === '\\') {
+          this.scanEscape = true
+          if (this.scanCapture?.mode === 'object' || this.scanCapture?.mode === 'string') this.scanCapture.text += char
+          continue
+        }
+        if (char === '"') {
+          if (this.scanCapture?.mode === 'object') this.scanCapture.text += char
+          this.scanInString = false
+          if (this.scanCapture?.mode === 'string') this.finishDurationCapture()
+          else if (this.scanCapture?.mode === 'object') {
+            this.scanAwaitingColon = false
+            this.scanCurrentKey = undefined
+          } else {
+            this.scanLastString = this.scanString
+            this.scanAwaitingColon = true
+          }
+          continue
+        }
+        if (this.scanCapture?.mode === 'object' || this.scanCapture?.mode === 'string') this.scanCapture.text += char
+        else this.scanString += char
+        continue
+      }
+
+      if (this.scanCapture?.mode === 'primitive') {
+        if (char === ',' || char === '}' || char === ']') this.finishDurationCapture()
+        else { this.scanCapture.text += char; continue }
+      }
+      if (this.scanAwaitingColon) {
+        if (/\s/.test(char)) continue
+        if (char === ':') {
+          this.scanCurrentKey = this.scanLastString
+          this.scanAwaitingColon = false
+          continue
+        }
+        this.scanAwaitingColon = false
+      }
+      if (char === '"') {
+        this.scanString = ''
+        if (this.scanCapture?.mode === 'object') this.scanCapture.text += char
+        if (this.scanCurrentKey === 'duration' && this.scanPayloadDepth === this.scanDepth) {
+          this.scanCapture = { mode: 'string', text: '', depth: this.scanDepth }
+          this.scanCurrentKey = undefined
+        }
+        this.scanInString = true
+        continue
+      }
+      if (char === '{' || char === '[') {
+        if (this.scanCurrentKey === 'payload' && char === '{' && this.scanPayloadDepth === undefined) {
+          this.scanPayloadDepth = this.scanDepth + 1
+        }
+        if (this.scanCurrentKey === 'duration' && this.scanPayloadDepth === this.scanDepth) {
+          this.scanCapture = { mode: 'object', text: char, depth: this.scanDepth + 1 }
+          this.scanCurrentKey = undefined
+        } else if (this.scanCapture?.mode === 'object') {
+          this.scanCapture.text += char
+        }
+        this.scanDepth++
+        continue
+      }
+      if (char === '}' || char === ']') {
+        if (this.scanCapture?.mode === 'object') this.scanCapture.text += char
+        this.scanDepth = Math.max(0, this.scanDepth - 1)
+        if (this.scanCapture?.mode === 'object' && this.scanDepth < this.scanCapture.depth) this.finishDurationCapture()
+        continue
+      }
+      if (this.scanCurrentKey === 'duration' && this.scanPayloadDepth === this.scanDepth && !/\s/.test(char)) {
+        this.scanCapture = { mode: 'primitive', text: char, depth: this.scanDepth }
+        this.scanCurrentKey = undefined
+        continue
+      }
+      if (this.scanCapture?.mode === 'object') this.scanCapture.text += char
+    }
+  }
+
+  private processLine(line: string, durationOverride?: number): void {
+    const entry = parseLine(line)
+    if (!entry) return
+    if (durationOverride !== undefined && (line.startsWith(TRUNCATION_MARKER) || line.length > 256 * 1024) && entry.type === 'event_msg' && (entry.payload?.type === 'mcp_tool_call_end' || entry.payload?.type === 'task_complete')) {
+      entry.payload = { ...entry.payload, duration_ms: durationOverride }
+    }
+    const state = this.state
+    if (entry.type === 'session_meta') {
+      if (entry.payload?.model) state.model = entry.payload.model
+      if (entry.payload?.forked_from_id && entry.timestamp) {
+        const timestamp = Date.parse(entry.timestamp)
+        if (Number.isFinite(timestamp)) state.forkCutoffMs = timestamp + 5000
+      }
+      return
+    }
+    if (entry.type === 'turn_context' && entry.payload?.model) state.model = entry.payload.model
+    const entryTimestamp = entry.timestamp ? Date.parse(entry.timestamp) : NaN
+    const isForkReplay = state.forkCutoffMs !== undefined && Number.isFinite(entryTimestamp) && entryTimestamp < state.forkCutoffMs
+    if (isForkReplay && (
+      entry.payload?.type === 'task_started' ||
+      entry.payload?.type === 'task_complete' ||
+      entry.payload?.type === 'function_call' ||
+      entry.payload?.type === 'function_call_output' ||
+      entry.payload?.type === 'custom_tool_call' ||
+      entry.payload?.type === 'custom_tool_call_output' ||
+      entry.payload?.type === 'mcp_tool_call_end' ||
+      entry.payload?.type === 'patch_apply_end' ||
+      entry.payload?.type === 'token_count'
+    )) return
+    if (entry.type === 'event_msg' && entry.payload?.type === 'task_started') {
+      state.currentTaskGenerated = 0
+      state.currentTaskToolIntervals = []
+      const startedAt = entry.timestamp ? Date.parse(entry.timestamp) : NaN
+      state.currentTaskStartedAt = Number.isFinite(startedAt) ? startedAt : undefined
+      state.toolStarts.clear()
+    }
+    if (entry.type === 'response_item' && (entry.payload?.type === 'function_call' || entry.payload?.type === 'custom_tool_call') && entry.payload.call_id && entry.timestamp) {
+      const started = Date.parse(entry.timestamp)
+      if (Number.isFinite(started)) state.toolStarts.set(entry.payload.call_id, started)
+    }
+    if (entry.type === 'response_item' && (entry.payload?.type === 'function_call_output' || entry.payload?.type === 'custom_tool_call_output') && entry.payload.call_id && entry.timestamp) {
+      const ended = Date.parse(entry.timestamp)
+      const started = state.toolStarts.get(entry.payload.call_id)
+      if (started !== undefined && Number.isFinite(ended) && ended > started) state.currentTaskToolIntervals.push([started, ended])
+      state.toolStarts.delete(entry.payload.call_id)
+    }
+    if (entry.type === 'event_msg' && entry.payload?.type === 'mcp_tool_call_end' && entry.timestamp) {
+      const ended = Date.parse(entry.timestamp)
+      const elapsed = durationMs(entry.payload)
+      if (Number.isFinite(ended) && elapsed !== undefined && elapsed > 0) state.currentTaskToolIntervals.push([ended - elapsed, ended])
+    }
+    if (entry.type === 'event_msg' && entry.payload?.type === 'task_complete') {
+      const taskDurationMs = durationMs(entry.payload)
+      if (state.latestPoint && typeof taskDurationMs === 'number' && taskDurationMs > 0 && state.currentTaskGenerated > 0) {
+        state.latestPoint.taskGeneratedTokens = state.currentTaskGenerated
+        const completedAt = entry.timestamp ? Date.parse(entry.timestamp) : undefined
+        const toolWaitMs = mergeToolIntervals(state.currentTaskToolIntervals, taskDurationMs, state.currentTaskStartedAt, Number.isFinite(completedAt) ? completedAt : undefined)
+        const activeMs = taskDurationMs - toolWaitMs
+        if (activeMs > 0) {
+          state.latestPoint.activeDurationSeconds = activeMs / 1000
+          state.latestPoint.toolWaitSeconds = toolWaitMs / 1000
+          state.latestPoint.activeGeneratedTokensPerSecond = state.currentTaskGenerated / (activeMs / 1000)
+        }
+      }
+    }
+    if (entry.type !== 'event_msg' || entry.payload?.type !== 'token_count') return
+    const info = entry.payload.info
+    if (!info || !entry.timestamp) return
+    const last = info.last_token_usage
+    const total = info.total_token_usage
+    const cumulative = total?.total_tokens
+    if (cumulative !== undefined && cumulative === state.previousTotal) return
+    let outputTokens = last?.output_tokens ?? 0
+    let reasoningTokens = last?.reasoning_output_tokens ?? 0
+    if (!last && total && cumulative !== undefined && state.previousTotal !== undefined) {
+      outputTokens = Math.max(0, (total.output_tokens ?? 0) - state.previousOutput)
+      reasoningTokens = Math.max(0, (total.reasoning_output_tokens ?? 0) - state.previousReasoning)
+    }
+    if (cumulative !== undefined) {
+      state.previousTotal = cumulative
+      state.previousOutput = total?.output_tokens ?? state.previousOutput
+      state.previousReasoning = total?.reasoning_output_tokens ?? state.previousReasoning
+    }
+    const generatedTokens = outputTokens + reasoningTokens
+    if (generatedTokens <= 0) return
+    const timestampMs = Date.parse(entry.timestamp)
+    if (!Number.isFinite(timestampMs)) return
+    const point: CodexThroughputPoint = {
+      timestamp: entry.timestamp,
+      model: state.model,
+      outputTokens,
+      reasoningTokens,
+      generatedTokens,
+    }
+    state.currentTaskGenerated += generatedTokens
+    state.latestPoint = point
+    if (state.previousTimestamp !== undefined && timestampMs > state.previousTimestamp) {
+      const elapsedSeconds = (timestampMs - state.previousTimestamp) / 1000
+      point.elapsedSeconds = elapsedSeconds
+      point.generatedTokensPerSecond = generatedTokens / elapsedSeconds
+    }
+    state.previousTimestamp = timestampMs
+    state.points.push(point)
+    if (state.points.length > 10000) state.points.splice(0, state.points.length - 10000)
+  }
+
+  async update(filePath: string, limit = 10, finalize = false): Promise<CodexThroughputPoint[]> {
+    const info = await stat(filePath)
+    if (info.size < this.offset) this.reset()
+    const bytesToRead = info.size - this.offset
+    if (bytesToRead > 0) {
+      const file = await open(filePath, 'r')
+      try {
+        let position = this.offset
+        while (position < info.size) {
+          const buffer = Buffer.allocUnsafe(Math.min(CHUNK_BYTES, info.size - position))
+          const { bytesRead } = await file.read(buffer, 0, buffer.length, position)
+          if (bytesRead === 0) break
+          position += bytesRead
+          this.offset = position
+          let chunk = this.decoder.write(buffer.subarray(0, bytesRead))
+          while (chunk.length > 0) {
+            const newlineIndex = chunk.search(/\r?\n/)
+            const segment = newlineIndex >= 0 ? chunk.slice(0, newlineIndex) : chunk
+            this.pending += segment
+            this.scanDurationSegment(segment)
+            if (newlineIndex < 0) break
+            const newlineLength = chunk[newlineIndex] === '\r' ? 2 : 1
+            const line = this.pending
+            const durationOverride = this.pendingDurationMs
+            this.pending = ''
+            this.pendingDurationMs = undefined
+            this.scanDepth = 0
+            this.scanPayloadDepth = undefined
+            this.scanInString = false
+            this.scanEscape = false
+            this.scanString = ''
+            this.scanLastString = ''
+            this.scanAwaitingColon = false
+            this.scanCurrentKey = undefined
+            this.scanCapture = undefined
+            this.processLine(line, durationOverride)
+            chunk = chunk.slice(newlineIndex + newlineLength)
+          }
+          if (this.pending.length > MAX_PENDING_LINE_CHARS) {
+            const body = this.pending.startsWith(TRUNCATION_MARKER)
+              ? this.pending.slice(TRUNCATION_MARKER.length)
+              : this.pending
+            this.pending = TRUNCATION_MARKER + body.slice(0, 256 * 1024) + body.slice(-256 * 1024)
+          }
+        }
+      } finally {
+        await file.close()
+      }
+    }
+    if (finalize && this.pending) {
+      this.processLine(this.pending, this.pendingDurationMs)
+      this.pending = ''
+      this.pendingDurationMs = undefined
+    }
+    return limit > 0 ? this.state.points.slice(-limit) : this.state.points.slice()
+  }
+}
+
+export async function readCodexThroughput(filePath: string, limit = 10): Promise<CodexThroughputPoint[]> {
+  return new CodexThroughputReader().update(filePath, limit, true)
+}
+
+export async function newestCodexSession(sessions: Array<{ path: string }>): Promise<string | undefined> {
+  let newest: { path: string; mtimeMs: number } | undefined
+  for (const session of sessions) {
+    try {
+      const info = await stat(session.path)
+      if (!newest || info.mtimeMs > newest.mtimeMs) newest = { path: session.path, mtimeMs: info.mtimeMs }
+    } catch {
+      // A session can disappear while Codex rotates or archives it.
+    }
+  }
+  return newest?.path
+}
+
+export function renderCodexThroughput(points: CodexThroughputPoint[], filePath: string): string {
+  const latest = points.at(-1)
+  if (!latest) return `No token_count checkpoints found in ${filePath}.`
+  const lines = [
+    'CodeBurn Codex throughput estimate',
+    `Session: ${filePath}`,
+    `Latest checkpoint: ${latest.timestamp}`,
+    `Latest checkpoint tokens: ${latest.generatedTokens.toLocaleString()} (${latest.outputTokens.toLocaleString()} output + ${latest.reasoningTokens.toLocaleString()} reasoning)`,
+  ]
+  if (latest.taskGeneratedTokens !== undefined) lines.push(`Completed task total: ${latest.taskGeneratedTokens.toLocaleString()} generated tokens`)
+  if (latest.activeGeneratedTokensPerSecond !== undefined) {
+    lines.push(`Active throughput: ${latest.activeGeneratedTokensPerSecond.toFixed(1)} generated tokens/sec over ${latest.activeDurationSeconds!.toFixed(1)}s`)
+    lines.push(`Excluded tool wait: ${latest.toolWaitSeconds!.toFixed(1)}s`)
+  } else if (latest.generatedTokensPerSecond !== undefined) {
+    lines.push(`Checkpoint estimate: ${latest.generatedTokensPerSecond.toFixed(1)} generated tokens/sec over ${latest.elapsedSeconds!.toFixed(1)}s`)
+  } else {
+    lines.push('Throughput: unavailable (waiting for a completed turn)')
+  }
+  lines.push('Note: offline JSONL estimate; tool intervals are removed, but server/prompt latency may remain.')
+  return lines.join('\n')
+}

src/daily-cache.ts

@@ -150,6 +150,14 @@ export type DailyCache = {
   /// as incomplete and is fully re-backfilled. Absent on caches written before
   /// this field existed → treated as incomplete (one self-healing re-backfill).
   complete?: boolean
+  /// True once a COMPLETE parse finalized this watermark. The pull-back below
+  /// only distrusts caches WITHOUT this stamp: a degraded parse can no longer
+  /// set `complete`, so a stamped cache whose watermark sits past its newest
+  /// populated day is a legitimately idle tail (recent days had no activity),
+  /// not a frozen hole, and re-deriving it every launch is pure waste. Absent
+  /// on caches written before this field: distrusted once (one healing
+  /// pull-back), then stamped.
+  watermarkTrusted?: boolean
 }
 
 function getCacheDir(): string {
@@ -257,7 +265,13 @@ function sanitizeProjects(raw: unknown): { projects?: DailyEntry['projects'] } {
   if (!isRecord(raw)) return {}
   const out: NonNullable<DailyEntry['projects']> = {}
   for (const [name, p] of Object.entries(raw)) {
-    if (name in Object.prototype || !isRecord(p)) continue
+    // A project key is a directory basename, so it can legitimately be a
+    // prototype-member name ("constructor", "valueOf", ...). `setOwn` writes it
+    // as an own property via defineProperty, so keeping it is pollution-safe —
+    // and dropping it would silently subtract that project's cost from a
+    // --project/--exclude total (the day's split would no longer sum to its own
+    // cost, which the filtered headline relies on).
+    if (!isRecord(p)) continue
     setOwn(out, name, {
       cost: num(p.cost),
       calls: num(p.calls),
@@ -294,7 +308,7 @@ function migrateDays(days: Record<string, unknown>[]): DailyEntry[] {
     }))
 }
 
-function migratedFrom(parsed: { version: number; lastComputedDate: string | null; savingsConfigHash?: string; tzKey?: string; days: Record<string, unknown>[]; complete?: boolean }): DailyCache {
+function migratedFrom(parsed: { version: number; lastComputedDate: string | null; savingsConfigHash?: string; tzKey?: string; days: Record<string, unknown>[]; complete?: boolean; watermarkTrusted?: boolean }): DailyCache {
   return {
     version: DAILY_CACHE_VERSION,
     savingsConfigHash: parsed.savingsConfigHash ?? '',
@@ -306,6 +320,9 @@ function migratedFrom(parsed: { version: number; lastComputedDate: string | null
     // Only a cache explicitly marked complete stays trusted; one written before
     // the marker existed reads false and is re-backfilled once.
     complete: parsed.complete === true,
+    // Absent on a pre-fix cache: the watermark is distrusted once (healing
+    // pull-back), then re-stamped by the finalize that follows.
+    watermarkTrusted: parsed.watermarkTrusted === true,
   }
 }
 
@@ -409,6 +426,7 @@ async function adoptOlderDailyCaches(): Promise<DailyCache> {
     // accounting: leave complete unset so the next hydration re-derives every
     // day whose sources survive (the merge keeps the rest).
     complete: rest.length === candidates.length ? false : base.complete,
+    watermarkTrusted: rest.length === candidates.length ? false : base.watermarkTrusted,
   }
   await saveDailyCache(adopted).catch(() => {})
   return adopted
@@ -451,6 +469,7 @@ export function addNewDays(cache: DailyCache, incoming: DailyEntry[], newestDate
     lastComputedDate: nextLast,
     days: applyRetention(merged, newestDate),
     complete: cache.complete,
+    watermarkTrusted: cache.watermarkTrusted,
   }
 }
 
@@ -671,6 +690,27 @@ export async function ensureCacheHydrated(
       c = { ...c, days: freshDays, lastComputedDate: latestFresh }
     }
 
+    // A cache can claim `complete` while its watermark points PAST its newest
+    // populated day — what a run finalizing off a degraded (read-only) parse
+    // leaves behind: it advanced lastComputedDate over days the parse never
+    // covered. Since gapStart is lastComputedDate + 1, that hole is invisible
+    // to the gap logic forever. Trust the DATA over the marker: pull the
+    // watermark back to the newest day actually present so the ordinary gap
+    // parse re-derives the tail. Nothing is dropped — the cached days all stay.
+    //
+    // Only UNSTAMPED caches are distrusted here. A degraded parse can no longer
+    // set `complete` (that is this fix), so the corrupt state can only be
+    // written by pre-fix code: an unstamped cache. A stamped one whose watermark
+    // outruns its newest day is a legitimately idle tail (recent days had no
+    // activity), and re-deriving that empty tail on every launch is the
+    // regression this guard avoids. A cache with NO days is exempt: it has no
+    // newest day to trust, and a machine with no history at all must still be
+    // able to finalize (below) rather than re-backfill on every launch.
+    const newestCachedDate = c.days.reduce<string | null>((max, d) => (max === null || d.date > max ? d.date : max), null)
+    if (c.watermarkTrusted !== true && newestCachedDate !== null && c.lastComputedDate !== null && c.lastComputedDate > newestCachedDate) {
+      c = { ...c, lastComputedDate: newestCachedDate }
+    }
+
     // Three reasons to re-derive the whole retention window:
     //  1. Savings config changed — cached `savingsUSD` totals are stale.
     //  2. The cache was never finalized against a COMPLETE session parse (an old
@@ -691,6 +731,7 @@ export async function ensureCacheHydrated(
     const tzChanged = c.tzKey !== undefined && c.tzKey !== tzKey
     if (c.savingsConfigHash !== savingsConfigHash || c.complete !== true || tzChanged) {
       const baseline = c.days
+      const priorWatermark = c.lastComputedDate
       const backfillStart = new Date(now.getFullYear(), now.getMonth(), now.getDate() - BACKFILL_DAYS)
       let freshDays: DailyEntry[] = []
       if (backfillStart.getTime() <= yesterdayEnd.getTime()) {
@@ -708,9 +749,18 @@ export async function ensureCacheHydrated(
         version: DAILY_CACHE_VERSION,
         savingsConfigHash,
         tzKey,
-        lastComputedDate: yesterdayStr,
+        // The watermark records how far history has actually been derived, so
+        // only a COMPLETE parse may advance it. A partial one produced no data
+        // for whatever it could not read; moving the watermark to yesterday
+        // anyway would place those days behind the next run's gapStart and
+        // freeze the hole in (retention still anchors on yesterdayStr — the
+        // real calendar edge — so holding the watermark can't evict anything).
+        lastComputedDate: parseWasComplete ? yesterdayStr : priorWatermark,
         days: applyRetention(merged, yesterdayStr),
         complete: parseWasComplete,
+        // Stamp the watermark as trusted only when a COMPLETE parse produced it,
+        // so a later idle tail under this watermark is not distrusted above.
+        watermarkTrusted: parseWasComplete,
       }
       await saveDailyCache(c)
       return c
@@ -733,18 +783,23 @@ export async function ensureCacheHydrated(
       const gapRange: DateRange = { start: gapStart, end: yesterdayEnd }
       const gapProjects = await parseSessions(gapRange)
       const gapDays = aggregateDays(gapProjects)
+      const parseWasComplete = sessionComplete()
+      const priorWatermark = c.lastComputedDate
       c = addNewDays(c, gapDays, yesterdayStr)
       // Finalize as complete ONLY when the session parse that produced these days
       // was itself complete. If it was partial, leave `complete: false` so the
       // next launch (once the session cache is whole) re-backfills instead of
-      // freezing the partial history.
-      c = { ...c, complete: sessionComplete() }
+      // freezing the partial history — and hold the watermark where it was, for
+      // the same reason as the re-derive path above: a partial parse cannot
+      // vouch for the days it never read, and gapStart is the only thing that
+      // will ever bring them back.
+      c = { ...c, lastComputedDate: parseWasComplete ? c.lastComputedDate : priorWatermark, complete: parseWasComplete, watermarkTrusted: parseWasComplete }
       await saveDailyCache(c)
     } else if (c.complete !== true && sessionComplete()) {
       // No gap to fill (already current through yesterday) but not yet marked —
       // e.g. a brand-new machine whose only data is today. Finalize so future
       // launches don't re-backfill the whole window every time.
-      c = { ...c, complete: true }
+      c = { ...c, complete: true, watermarkTrusted: true }
       await saveDailyCache(c)
     }
     return c

src/dashboard.tsx

@@ -46,6 +46,8 @@ export function showEmptyState(projectCount: number, scrollableHistory: boolean,
   return historyProjectCount === 0 && !historyLoading
 }
 
+// The By Model panel drops the Tok/s column when the panel is too narrow, so
+// the wider two-column layout can still activate at ordinary terminal widths.
 const MIN_WIDE = 90
 const ORANGE = '#FF8C42'
 const DIM = '#555555'
@@ -196,9 +198,9 @@ function nextTick(): Promise<void> {
   return new Promise(resolve => setImmediate(resolve))
 }
 
-type Layout = { dashWidth: number; wide: boolean; halfWidth: number; barWidth: number }
+export type Layout = { dashWidth: number; wide: boolean; halfWidth: number; barWidth: number }
 
-function getLayout(columns?: number): Layout {
+export function getLayout(columns?: number): Layout {
   const termWidth = columns || parseInt(process.env['COLUMNS'] ?? '') || 80
   const dashWidth = Math.min(160, termWidth)
   const wide = dashWidth >= MIN_WIDE
@@ -440,6 +442,7 @@ const MODEL_COL_COST = 8
 const MODEL_COL_CACHE = 7
 const MODEL_COL_CALLS = 7
 const MODEL_COL_ONESHOT = 7
+const MODEL_COL_TPS = 7
 const MODEL_NAME_WIDTH = 14
 const MIN_EDIT_TURNS_FOR_RATE = 5
 
@@ -449,6 +452,10 @@ function ModelBreakdown({ projects, pw, bw }: { projects: ProjectSummary[]; pw:
   const modelTotals = aggregateModelTotals(projects)
   const modelEfficiency = aggregateModelEfficiency(projects)
   const anyEstimated = Object.values(modelTotals).some(d => d.estimatedCostUSD > 0)
+  const anyActiveTiming = Object.values(modelTotals).some(d => d.activeDurationMs > 0 && d.activeGeneratedTokens > 0)
+  // The Tok/s column needs 61 inner columns for the full row; hide it on narrower
+  // panels and when no model has timing data (non-Codex users get no dead column).
+  const showTps = pw - PANEL_CHROME >= 61 && anyActiveTiming
   const sorted = Object.entries(modelTotals).sort(([, a], [, b]) => b.costUSD - a.costUSD)
   const maxCost = sorted[0]?.[1]?.costUSD ?? 0
   const unpriced = findUnpricedModels(Object.entries(modelTotals).map(([model, d]) => ({
@@ -460,7 +467,7 @@ function ModelBreakdown({ projects, pw, bw }: { projects: ProjectSummary[]; pw:
 
   return (
     <Panel title="By Model" color={PANEL_COLORS.model} width={pw}>
-      <Text dimColor wrap="truncate-end">{''.padEnd(bw + 1 + MODEL_NAME_WIDTH)}{'cost'.padStart(MODEL_COL_COST)}{'cache'.padStart(MODEL_COL_CACHE)}{'calls'.padStart(MODEL_COL_CALLS)}{'1-shot'.padStart(MODEL_COL_ONESHOT)}</Text>
+      <Text dimColor wrap="truncate-end">{''.padEnd(bw + 1 + MODEL_NAME_WIDTH)}{'cost'.padStart(MODEL_COL_COST)}{'cache'.padStart(MODEL_COL_CACHE)}{'calls'.padStart(MODEL_COL_CALLS)}{'1-shot'.padStart(MODEL_COL_ONESHOT)}{showTps ? 'Tok/s'.padStart(MODEL_COL_TPS) : ''}</Text>
       {sorted.map(([model, data], i) => {
         const totalInput = data.freshInput + data.cacheRead + data.cacheWrite
         const cacheHit = totalInput > 0 ? (data.cacheRead / totalInput) * 100 : 0
@@ -469,6 +476,9 @@ function ModelBreakdown({ projects, pw, bw }: { projects: ProjectSummary[]; pw:
         const oneShotLabel = efficiency && efficiency.editTurns >= MIN_EDIT_TURNS_FOR_RATE && efficiency.oneShotRate !== null
           ? `${efficiency.oneShotRate.toFixed(1)}%`
           : '-'
+        const tpsLabel = data.activeDurationMs > 0 && data.activeGeneratedTokens > 0
+          ? (data.activeGeneratedTokens / (data.activeDurationMs / 1000)).toFixed(1)
+          : '-'
         return (
           <Text key={`${model}-${i}`} wrap="truncate-end">
             <HBar value={data.costUSD} max={maxCost} width={bw} />
@@ -477,6 +487,7 @@ function ModelBreakdown({ projects, pw, bw }: { projects: ProjectSummary[]; pw:
             <Text>{cacheLabel.padStart(MODEL_COL_CACHE)}</Text>
             <Text>{String(data.calls).padStart(MODEL_COL_CALLS)}</Text>
             <Text>{oneShotLabel.padStart(MODEL_COL_ONESHOT)}</Text>
+            {showTps && <Text>{tpsLabel.padStart(MODEL_COL_TPS)}</Text>}
           </Text>
         )
       })}
@@ -488,6 +499,9 @@ function ModelBreakdown({ projects, pw, bw }: { projects: ProjectSummary[]; pw:
       {anyEstimated && (
         <Text dimColor wrap="truncate-end">~ estimated cost (priced from estimated tokens)</Text>
       )}
+      {showTps && (
+        <Text dimColor wrap="truncate-end">~ Tok/s: generated tokens / active time; tool wait excluded</Text>
+      )}
     </Panel>
   )
 }

src/day-aggregator.ts

@@ -75,14 +75,25 @@ export function aggregateProjectsIntoDays(projects: ProjectSummary[]): DailyEntr
 
       for (const turn of session.turns) {
         if (turn.assistantCalls.length === 0) continue
-        // Turn-anchored bucketing: attribute the WHOLE turn — every one of its
-        // calls — to the day of the turn's user-message timestamp, matching the
-        // live headline/report rollup (main.ts daily). Falls back to the first
-        // assistant-call timestamp when the user line is missing (continuation
-        // sessions that begin mid-conversation). Previously the calls were
-        // bucketed per-call by each call's own timestamp, so a midnight-
-        // straddling turn split across two days and history.daily / the provider
-        // breakdown never reconciled to current.cost (a constant offset).
+        // Two bucketing rules, deliberately different per level:
+        // - Turn-level judgments (category, editTurns, oneShotTurns) stay
+        //   anchored to the turn's day (its timestamp — the user-message time,
+        //   or the re-anchored first surviving call when the parser sliced
+        //   the turn to a range, and falling back to the first assistant call
+        //   when the user line is missing). They describe the whole exchange,
+        //   not a per-call sum, so a sliced straddling turn reports them on
+        //   each side's anchor day — summed across days they inflate, which
+        //   is the accepted, documented semantics (see review on #852).
+        // - Call-derived values (cost/savings/calls/tokens and the model,
+        //   project, and provider-slice rollups built from them) bucket under
+        //   EACH CALL's own local day (the per-call loop below). The parser
+        //   slices straddling turns per range (issue #852), so every parse
+        //   only holds in-range calls and per-call bucketing keeps day-N +
+        //   day-N+1 equal to the whole range — and history.daily reconciled
+        //   to the headline built from the same days. (Before the parser
+        //   sliced per call, per-call bucketing here was what caused the
+        //   constant offset against the whole-turn headline; the slice is
+        //   what makes it exact now.)
         const turnDate = dateKey(turn.timestamp || turn.assistantCalls[0]!.timestamp)
         const turnDay = ensure(turnDate)
 
@@ -140,21 +151,26 @@ export function aggregateProjectsIntoDays(projects: ProjectSummary[]): DailyEntr
 
         for (const call of turn.assistantCalls) {
           const callSavings = call.savingsUSD ?? 0
+          // Call-derived values bucket under the call's OWN day (see the
+          // two-rule comment above). An unparseable call timestamp falls back
+          // to the turn's anchor day rather than producing a garbage date key.
+          const callDate = Number.isNaN(new Date(call.timestamp).getTime()) ? turnDate : dateKey(call.timestamp)
+          const callDay = ensure(callDate)
 
-          turnDay.cost += call.costUSD
-          turnDay.savingsUSD += callSavings
-          turnDay.calls += 1
-          turnDay.inputTokens += call.usage.inputTokens
-          turnDay.outputTokens += call.usage.outputTokens
-          turnDay.cacheReadTokens += call.usage.cacheReadInputTokens
-          turnDay.cacheWriteTokens += call.usage.cacheCreationInputTokens
+          callDay.cost += call.costUSD
+          callDay.savingsUSD += callSavings
+          callDay.calls += 1
+          callDay.inputTokens += call.usage.inputTokens
+          callDay.outputTokens += call.usage.outputTokens
+          callDay.cacheReadTokens += call.usage.cacheReadInputTokens
+          callDay.cacheWriteTokens += call.usage.cacheCreationInputTokens
 
-          const dayProject = ensureProject(turnDay, session.project, project.projectPath)
+          const dayProject = ensureProject(callDay, session.project, project.projectPath)
           dayProject.cost += call.costUSD
           dayProject.calls += 1
           dayProject.savingsUSD += callSavings
 
-          const model = turnDay.models[call.model] ?? {
+          const model = callDay.models[call.model] ?? {
             calls: 0, cost: 0, savingsUSD: 0,
             inputTokens: 0, outputTokens: 0,
             cacheReadTokens: 0, cacheWriteTokens: 0,
@@ -166,9 +182,9 @@ export function aggregateProjectsIntoDays(projects: ProjectSummary[]): DailyEntr
           model.outputTokens += call.usage.outputTokens
           model.cacheReadTokens += call.usage.cacheReadInputTokens
           model.cacheWriteTokens += call.usage.cacheCreationInputTokens
-          turnDay.models[call.model] = model
+          callDay.models[call.model] = model
 
-          const slice = ensureSlice(turnDay, call.provider)
+          const slice = ensureSlice(callDay, call.provider)
           slice.calls += 1
           slice.cost += call.costUSD
           slice.savingsUSD += callSavings

src/main.ts

@@ -5,6 +5,7 @@ import { exportCsv, exportJson, type PeriodExport } from './export.js'
 import { findUnpricedModels, loadPricing, setModelAliases, setPriceOverrides, setLocalModelSavings, setProxyPaths, normalizeProxyPath } from './models.js'
 import { parseAllSessions, filterProjectsByName, filterProjectsByDateRange, clearSessionCache, setInteractiveScanUI } from './parser.js'
 import { allProviderNames, getAllProviders } from './providers/index.js'
+import { getProvider } from './providers/index.js'
 import { convertCost, formatCost } from './currency.js'
 import { renderStatusBar } from './format.js'
 import { toDateString } from './daily-cache.js'
@@ -46,6 +47,7 @@ import { createRequire } from 'node:module'
 const require = createRequire(import.meta.url)
 const { version } = require('../package.json')
 import { loadCurrency, getCurrency, isValidCurrencyCode } from './currency.js'
+import { CodexThroughputReader, newestCodexSession, renderCodexThroughput } from './codex-throughput.js'
 
 // A downstream reader that closes the pipe early (`| head`, quitting `less`, or
 // a missing command) makes stdout writes fail with EPIPE. Exit cleanly rather
@@ -68,6 +70,22 @@ function parseInteger(value: string): number {
   return parseInt(value, 10)
 }
 
+function parseCodexTpsLimit(value: string): number {
+  const parsed = Number(value)
+  if (!Number.isFinite(parsed) || !Number.isInteger(parsed) || parsed < 1 || parsed > 10000) {
+    throw new Error('limit must be an integer from 1 to 10000')
+  }
+  return parsed
+}
+
+function parseCodexTpsWatch(value: string): number {
+  const parsed = Number(value)
+  if (!Number.isFinite(parsed) || parsed < 0 || (parsed > 0 && parsed < 1) || parsed > 3600) {
+    throw new Error('watch must be 0 or at least 1 second (up to 3600 seconds)')
+  }
+  return parsed
+}
+
 type PriceOverrideConfig = NonNullable<CodeburnConfig['priceOverrides']>[string]
 
 type PriceOverrideOptions = {
@@ -497,9 +515,17 @@ function buildJsonReport(projects: ProjectSummary[], period: string, periodKey:
         if (turn.retries === 0) dailyMap[day].oneShotTurns += 1
       }
       for (const call of turn.assistantCalls) {
-        dailyMap[day].cost += call.costUSD
-        dailyMap[day].savings += call.savingsUSD ?? 0
-        dailyMap[day].calls += 1
+        // Cost/savings/calls bucket under each call's OWN day — the same
+        // per-call rule as the durable day set (day-aggregator.ts), so this
+        // fallback and durable.days never diverge on a midnight-straddling
+        // turn (issue #852). Turn counts/edit stats stay anchored on the
+        // turn's day above. An unparseable call timestamp falls back to the
+        // turn's day rather than producing a garbage date key.
+        const callDay = Number.isNaN(new Date(call.timestamp).getTime()) ? day : dateKey(call.timestamp)
+        if (!dailyMap[callDay]) { dailyMap[callDay] = { cost: 0, savings: 0, calls: 0, turns: 0, editTurns: 0, oneShotTurns: 0 } }
+        dailyMap[callDay].cost += call.costUSD
+        dailyMap[callDay].savings += call.savingsUSD ?? 0
+        dailyMap[callDay].calls += 1
       }
     }
   }
@@ -966,6 +992,7 @@ program
         cacheWriteTokens: durable.data.cacheWriteTokens,
         days: durable.days,
         carriedCostUSD: durable.carriedCostUSD,
+        unattributedCostUSD: durable.unattributedCostUSD,
       },
     }))
   })
@@ -1843,6 +1870,94 @@ program
     await runContextCommand(session, opts)
   })
 
+program
+  .command('codex-tps [session]')
+  .description('Retrospective Codex generated-tokens/sec estimate from rollout checkpoints (not live decode speed)')
+  .option('--json', 'JSON output')
+  .option('--limit <n>', 'Number of recent checkpoints to scan', parseCodexTpsLimit, 10)
+  .option('--watch <seconds>', 'Refresh continuously while Codex writes checkpoints', parseCodexTpsWatch, 0)
+  .action(async (session: string | undefined, opts: { json?: boolean; limit: number; watch: number }) => {
+    const intervalMs = Math.max(0, opts.watch) * 1000
+    if (opts.json && intervalMs > 0) {
+      process.stderr.write('codeburn codex-tps: --json cannot be combined with --watch; use text watch output or one-shot JSON.\n')
+      process.exitCode = 2
+      return
+    }
+    const provider = await getProvider('codex')
+    if (!provider) {
+      process.stderr.write('codeburn codex-tps: Codex provider is unavailable.\n')
+      process.exitCode = 1
+      return
+    }
+    let cachedPath: string | undefined = session
+    let throughputReader: CodexThroughputReader | undefined
+    let lastFileState: { size: number; mtimeMs: number } | undefined
+    let lastDiscoveryMs = 0
+    let refreshInFlight = false
+    const render = async (): Promise<void> => {
+      if (refreshInFlight) return
+      refreshInFlight = true
+      try {
+        let filePath = session ?? cachedPath
+        // Keep an idle watcher on its chosen rollout. A full active+archive
+        // discovery can be hundreds of milliseconds on large histories, so
+        // only re-scan slowly to notice rotation; disappearance still triggers
+        // an immediate discovery on the next tick.
+        if (!session && (!filePath || Date.now() - lastDiscoveryMs >= 60_000)) {
+          lastDiscoveryMs = Date.now()
+          filePath = await newestCodexSession(await provider.discoverSessions())
+        }
+        if (!filePath) {
+          process.stderr.write('codeburn codex-tps: no Codex rollout sessions found.\n')
+          if (intervalMs === 0) process.exitCode = 1
+          return
+        }
+        const previousPath = cachedPath
+        cachedPath = filePath
+        if (previousPath !== filePath || !throughputReader) throughputReader = new CodexThroughputReader()
+        const fileInfo = await import('node:fs/promises').then(fs => fs.stat(filePath)).catch(() => null)
+        if (!fileInfo) {
+          process.stderr.write(`codeburn codex-tps: session file not found: ${filePath}\n`)
+          if (intervalMs === 0) process.exitCode = 1
+          if (!session) cachedPath = undefined
+          return
+        }
+        if (intervalMs > 0 && lastFileState && fileInfo.size === lastFileState.size && fileInfo.mtimeMs === lastFileState.mtimeMs) return
+        lastFileState = { size: fileInfo.size, mtimeMs: fileInfo.mtimeMs }
+        const points = await throughputReader!.update(filePath, opts.limit, intervalMs === 0)
+        if (opts.json) {
+          process.stdout.write(JSON.stringify({ session: filePath, points, live: intervalMs > 0 }, null, 2) + '\n')
+        } else {
+          if (intervalMs > 0) process.stdout.write('\x1b[2J\x1b[H')
+          process.stdout.write(renderCodexThroughput(points, filePath) + (intervalMs > 0 ? '\nWatching for new Codex checkpoints... (Ctrl-C to stop)\n' : '\n'))
+        }
+      } finally {
+        refreshInFlight = false
+      }
+    }
+    try {
+      await render()
+    } catch (error) {
+      const message = error instanceof Error ? error.message : String(error)
+      process.stderr.write(`codeburn codex-tps: refresh failed: ${message}\n`)
+      if (intervalMs === 0) {
+        process.exitCode = 1
+        return
+      }
+    }
+    if (intervalMs > 0) {
+      await new Promise<void>((resolve) => {
+        const timer = setInterval(() => {
+          void render().catch(error => {
+            const message = error instanceof Error ? error.message : String(error)
+            process.stderr.write(`codeburn codex-tps: refresh failed: ${message}\n`)
+          })
+        }, intervalMs)
+        process.once('SIGINT', () => { clearInterval(timer); resolve() })
+      })
+    }
+  })
+
 program
   .command('compare')
   .description('Compare two AI models side-by-side')

src/model-breakdown.ts

@@ -8,6 +8,8 @@ export interface ModelTotals {
   freshInput: number
   cacheRead: number
   cacheWrite: number
+  activeDurationMs: number
+  activeGeneratedTokens: number
 }
 
 /// Aggregate per-model usage across every session, keyed by the friendly display
@@ -24,6 +26,7 @@ export function aggregateModelTotals(projects: ProjectSummary[]): Record<string,
         const name = getShortModelName(model)
         const totals = (modelTotals[name] ??= {
           calls: 0, costUSD: 0, estimatedCostUSD: 0, freshInput: 0, cacheRead: 0, cacheWrite: 0,
+          activeDurationMs: 0, activeGeneratedTokens: 0,
         })
         totals.calls += data.calls
         totals.costUSD += data.costUSD
@@ -31,6 +34,8 @@ export function aggregateModelTotals(projects: ProjectSummary[]): Record<string,
         totals.freshInput += data.tokens.inputTokens
         totals.cacheRead += data.tokens.cacheReadInputTokens
         totals.cacheWrite += data.tokens.cacheCreationInputTokens
+        totals.activeDurationMs += data.activeDurationMs ?? 0
+        totals.activeGeneratedTokens += data.activeGeneratedTokens ?? 0
       }
     }
   }

src/overview.ts

@@ -97,6 +97,9 @@ export type OverviewDurable = {
   cacheWriteTokens: number
   days: DailyEntry[]
   carriedCostUSD: number
+  /// Cost a --project/--exclude filter could not attribute (cached days with no
+  /// per-project split). Optional so callers that never filter can omit it.
+  unattributedCostUSD?: number
 }
 
 export function renderOverview(
@@ -350,5 +353,12 @@ export function renderOverview(
     out.push(c.dim(`  includes ${formatCost(durable.carriedCostUSD)} preserved from expired session logs`))
   }
 
+  // A project filter cannot claim days the cache holds without a project split
+  // (recorded before that split existed), so they sit outside this total. Say how
+  // much rather than let the filtered figure look inexplicably short.
+  if (durable && (durable.unattributedCostUSD ?? 0) > 0) {
+    out.push(c.dim(`  excludes ${formatCost(durable.unattributedCostUSD!)} from days with no per-project history`))
+  }
+
   return out.join('\n') + '\n'
 }

src/parser.ts

@@ -27,6 +27,7 @@ import {
   saveCache,
 } from './session-cache.js'
 import { acquireCacheRefreshLock, type RefreshLockHandle } from './cache-refresh-lock.js'
+import { dateKey } from './day-aggregator.js'
 import type { ParsedProviderCall, SessionSource } from './providers/types.js'
 import type {
   ApiUsageIteration,
@@ -1734,6 +1735,11 @@ function buildSessionSummary(
       modelBreakdown[modelKey].tokens.cacheReadInputTokens += call.usage.cacheReadInputTokens
       modelBreakdown[modelKey].tokens.cacheCreationInputTokens += call.usage.cacheCreationInputTokens
       modelBreakdown[modelKey].tokens.reasoningTokens += call.usage.reasoningTokens
+      if (call.activeDurationMs !== undefined) {
+        modelBreakdown[modelKey].activeDurationMs = (modelBreakdown[modelKey].activeDurationMs ?? 0) + call.activeDurationMs
+        modelBreakdown[modelKey].activeGeneratedTokens = (modelBreakdown[modelKey].activeGeneratedTokens ?? 0) + (call.activeGeneratedTokens ?? call.usage.outputTokens + call.usage.reasoningTokens)
+        modelBreakdown[modelKey].toolWaitMs = (modelBreakdown[modelKey].toolWaitMs ?? 0) + (call.toolWaitMs ?? 0)
+      }
 
       for (const tool of extractCoreTools(call.tools)) {
         toolBreakdown[tool] = toolBreakdown[tool] ?? { calls: 0 }
@@ -1931,6 +1937,7 @@ async function scanProjectDirs(
       const cached = section.files[filePath]
       const action = reconcileFile(fp, cached)
       if (cached && (readOnly || action.action === 'unchanged')) {
+        if (readOnly && action.action !== 'unchanged') readOnlyServedStale = true
         unchangedFiles.push({ filePath, dirName, source, cached: section.files[filePath]! })
       } else if (!readOnly) {
         if (action.action === 'appended') {
@@ -1942,6 +1949,10 @@ async function scanProjectDirs(
           continue
         }
         changedFiles.push({ filePath, info: { dirName, fp, source } })
+      } else {
+        // Read-only with no cache entry at all: this file is dropped from what
+        // we serve, so the snapshot under-reports whatever days it covers.
+        readOnlyServedStale = true
       }
     }
     dirsDone++
@@ -2200,12 +2211,12 @@ async function scanProjectDirs(
     const spawnPrSets = cachedFile.prLinks?.length ? buildSpawnPrSets(cachedFile.turns) : {}
 
     if (dateRange) {
-      classifiedTurns = classifiedTurns.filter(turn => {
-        if (turn.assistantCalls.length === 0) return false
-        const firstCallTs = turn.assistantCalls[0]!.timestamp
-        if (!firstCallTs) return false
-        const ts = new Date(firstCallTs)
-        return ts >= dateRange.start && ts <= dateRange.end
+      // Slice rather than drop: a turn spanning local midnight would otherwise
+      // lose every call that lands in the requested day (issue #852). Only
+      // `assistantCalls`/`timestamp` are touched — see classifiedTurnSlicedToRange.
+      classifiedTurns = classifiedTurns.flatMap(turn => {
+        const sliced = classifiedTurnSlicedToRange(turn, dateRange)
+        return sliced ? [sliced] : []
       })
     }
 
@@ -2393,6 +2404,9 @@ function providerCallToCachedCall(call: ParsedProviderCall): CachedCall {
     ...(call.locAdded ? { locAdded: call.locAdded } : {}),
     ...(call.locRemoved ? { locRemoved: call.locRemoved } : {}),
     ...(call.editFailed ? { editFailed: call.editFailed } : {}),
+    activeDurationMs: call.activeDurationMs,
+    activeGeneratedTokens: call.activeGeneratedTokens,
+    toolWaitMs: call.toolWaitMs,
   }
 }
 
@@ -2429,6 +2443,9 @@ function apiCallToCachedCall(call: ParsedApiCall): CachedCall {
     ...(call.interrupted ? { interrupted: true } : {}),
     ...(call.userModified ? { userModified: true } : {}),
     ...(call.toolErrors ? { toolErrors: call.toolErrors } : {}),
+    activeDurationMs: call.activeDurationMs,
+    activeGeneratedTokens: call.activeGeneratedTokens,
+    toolWaitMs: call.toolWaitMs,
   }
 }
 
@@ -2541,6 +2558,9 @@ function cachedCallToApiCall(call: CachedCall): ParsedApiCall {
     deduplicationKey: call.deduplicationKey,
     cacheCreationOneHourTokens: u.cacheCreationOneHourTokens || undefined,
     toolSequence: call.toolSequence,
+    activeDurationMs: call.activeDurationMs,
+    activeGeneratedTokens: call.activeGeneratedTokens,
+    toolWaitMs: call.toolWaitMs,
   })
 }
 
@@ -2786,6 +2806,59 @@ export function createScanProgress(label: string, total: number) {
   }
 }
 
+// Shared by the turn-range slicers below: which of a turn's calls actually
+// fall inside dateRange. Returns null when none do (the turn should be dropped
+// entirely, not kept with an empty call list).
+function callsInRange<T extends { timestamp: string }>(calls: T[], dateRange: DateRange): T[] | null {
+  const inRange = calls.filter(c => {
+    const ts = new Date(c.timestamp)
+    return !Number.isNaN(ts.getTime()) && ts >= dateRange.start && ts <= dateRange.end
+  })
+  return inRange.length > 0 ? inRange : null
+}
+
+// A turn can span local midnight (e.g. a long-running autonomous Codex
+// session): dropping the whole turn because its FIRST call falls outside
+// dateRange discards every later call that lands in the requested day (issue
+// #852). Instead, keep only the calls actually inside the range. `timestamp`
+// is re-anchored to the first surviving call so downstream turn-anchored
+// bucketing (session day, report rollups) keys the slice under the day its
+// retained calls actually fall in, not the pre-slice turn's original
+// (possibly prior-day) start. Returns null when no call is in range.
+function turnSlicedToRange(turn: CachedTurn, dateRange: DateRange): CachedTurn | null {
+  const inRangeCalls = callsInRange(turn.calls, dateRange)
+  if (!inRangeCalls) return null
+  if (inRangeCalls.length === turn.calls.length) return turn
+  return { ...turn, calls: inRangeCalls, timestamp: inRangeCalls[0]!.timestamp }
+}
+
+// Same slice, applied post-classification (scanProjectDirs classifies every
+// turn from its FULL call list up front, before date filtering — see the
+// carriedBranch/carriedPrRefs comments in scanProjectDirs — so this only
+// trims `assistantCalls` and re-anchors `timestamp`; `category`/`subCategory`/
+// `retries`/`hasEdits` stay exactly as classified from the complete turn.
+// Those are turn-level judgments about the whole exchange, not a per-call
+// sum, so they aren't recomputed from the partial call list.
+function classifiedTurnSlicedToRange(turn: ClassifiedTurn, dateRange: DateRange): ClassifiedTurn | null {
+  const inRangeCalls = callsInRange(turn.assistantCalls, dateRange)
+  if (!inRangeCalls) return null
+  if (inRangeCalls.length === turn.assistantCalls.length) return turn
+  return { ...turn, assistantCalls: inRangeCalls, timestamp: inRangeCalls[0]!.timestamp }
+}
+
+// Day-set variant of classifiedTurnSlicedToRange for the menubar/history day
+// selection: keep only the calls whose own local day is selected and
+// re-anchor `timestamp` to the first survivor — the same split rule.
+function classifiedTurnSlicedToDays(turn: ClassifiedTurn, days: Set<string>): ClassifiedTurn | null {
+  const inRangeCalls = turn.assistantCalls.filter(c => {
+    const ts = new Date(c.timestamp)
+    return !Number.isNaN(ts.getTime()) && days.has(dateKey(c.timestamp))
+  })
+  if (inRangeCalls.length === 0) return null
+  if (inRangeCalls.length === turn.assistantCalls.length) return turn
+  return { ...turn, assistantCalls: inRangeCalls, timestamp: inRangeCalls[0]!.timestamp }
+}
+
 async function parseProviderSources(
   providerName: string,
   sources: SessionSource[],
@@ -2826,9 +2899,13 @@ async function parseProviderSources(
     // re-read a file that already threw and hasn't changed. It re-parses only
     // when the file changes (then `reconcileFile` reports non-'unchanged').
     if (cached && (readOnly || (action.action === 'unchanged' && (cached.failed || !cachedFileNeedsProviderReparse(providerName, source.path, cached))))) {
+      if (readOnly && action.action !== 'unchanged') readOnlyServedStale = true
       unchangedSources.push({ source, cached })
     } else if (!readOnly) {
       changedSources.push({ source, fp })
+    } else {
+      // Read-only with no cache entry at all — see scanProjectDirs.
+      readOnlyServedStale = true
     }
   }
 
@@ -2993,24 +3070,32 @@ async function parseProviderSources(
 
       for (const c of turn.calls) seenKeys.add(c.deduplicationKey)
 
+      let slicedTurn = turn
       if (dateRange) {
-        const callTs = turn.calls[0]?.timestamp
-        if (!callTs) continue
-        const ts = new Date(callTs)
-        if (ts < dateRange.start || ts > dateRange.end) continue
+        const sliced = turnSlicedToRange(turn, dateRange)
+        if (!sliced) continue
+        slicedTurn = sliced
       }
 
-      const classified = cachedTurnToClassified(turn)
-      const project = turn.calls[0]?.project ?? source.project
+      // Classify the FULL turn, then keep only the in-range calls: category /
+      // hasEdits / retries are whole-exchange judgments, not per-call sums, so a
+      // midnight-straddling turn is classified identically to the Claude path
+      // (scanProjectDirs) rather than being re-derived from a partial slice.
+      // Cost/calls come from the retained calls, unchanged.
+      const classifiedFull = cachedTurnToClassified(turn)
+      const classified = dateRange
+        ? (classifiedTurnSlicedToRange(classifiedFull, dateRange) ?? classifiedFull)
+        : classifiedFull
+      const project = slicedTurn.calls[0]?.project ?? source.project
       const key = `${providerName}:${turn.sessionId}:${project}`
 
       const existing = sessionMap.get(key)
       if (existing) {
         existing.turns.push(classified)
-        if (!existing.projectPath && turn.calls[0]?.projectPath) {
-          existing.projectPath = turn.calls[0]!.projectPath
+        if (!existing.projectPath && slicedTurn.calls[0]?.projectPath) {
+          existing.projectPath = slicedTurn.calls[0]!.projectPath
         }
-        if (!existing.workingDirectory && turn.calls[0]?.workingDirectory) existing.workingDirectory = turn.calls[0].workingDirectory
+        if (!existing.workingDirectory && slicedTurn.calls[0]?.workingDirectory) existing.workingDirectory = slicedTurn.calls[0].workingDirectory
         if (cachedFile.prLinks?.length) {
           const links = (existing.prLinks ??= new Set())
           for (const link of cachedFile.prLinks) links.add(link)
@@ -3019,8 +3104,8 @@ async function parseProviderSources(
       } else {
         sessionMap.set(key, {
           project,
-          projectPath: turn.calls[0]?.projectPath,
-          workingDirectory: turn.calls[0]?.workingDirectory,
+          projectPath: slicedTurn.calls[0]?.projectPath,
+          workingDirectory: slicedTurn.calls[0]?.workingDirectory,
           turns: [classified],
           ...(cachedFile.prLinks?.length ? { prLinks: new Set(cachedFile.prLinks) } : {}),
           ...(cachedFile.title ? { title: cachedFile.title } : {}),
@@ -3042,25 +3127,31 @@ async function parseProviderSources(
 
         for (const c of turn.calls) seenKeys.add(c.deduplicationKey)
 
+        let slicedTurn = turn
         if (dateRange) {
-          const callTs = turn.calls[0]?.timestamp
-          if (!callTs) continue
-          const ts = new Date(callTs)
-          if (ts < dateRange.start || ts > dateRange.end) continue
+          const sliced = turnSlicedToRange(turn, dateRange)
+          if (!sliced) continue
+          slicedTurn = sliced
         }
 
-        const classified = cachedTurnToClassified(turn)
-        const project = turn.calls[0]?.project ?? providerName
+        // Classify the FULL turn, then keep only the in-range calls (same rule
+        // as the loop above and the Claude path): whole-exchange judgments stay
+        // whole-turn; cost/calls come from the retained calls.
+        const classifiedFull = cachedTurnToClassified(turn)
+        const classified = dateRange
+          ? (classifiedTurnSlicedToRange(classifiedFull, dateRange) ?? classifiedFull)
+          : classifiedFull
+        const project = slicedTurn.calls[0]?.project ?? providerName
         const key = `${providerName}:${turn.sessionId}:${project}`
 
         const existingEntry = sessionMap.get(key)
         if (existingEntry) {
           existingEntry.turns.push(classified)
-          if (!existingEntry.projectPath && turn.calls[0]?.projectPath) {
-            existingEntry.projectPath = turn.calls[0]!.projectPath
+          if (!existingEntry.projectPath && slicedTurn.calls[0]?.projectPath) {
+            existingEntry.projectPath = slicedTurn.calls[0]!.projectPath
           }
         } else {
-          sessionMap.set(key, { project, projectPath: turn.calls[0]?.projectPath, workingDirectory: turn.calls[0]?.workingDirectory, turns: [classified] })
+          sessionMap.set(key, { project, projectPath: slicedTurn.calls[0]?.projectPath, workingDirectory: slicedTurn.calls[0]?.workingDirectory, turns: [classified] })
         }
       }
     }
@@ -3153,14 +3244,6 @@ export function filterProjectsByName(
   return result
 }
 
-function turnIsInDateRange(turn: ClassifiedTurn, dateRange: DateRange): boolean {
-  if (turn.assistantCalls.length === 0) return false
-  const firstCallTs = turn.assistantCalls[0]!.timestamp
-  if (!firstCallTs) return false
-  const ts = new Date(firstCallTs)
-  return ts >= dateRange.start && ts <= dateRange.end
-}
-
 function turnDayString(turn: ClassifiedTurn): string | null {
   if (turn.assistantCalls.length === 0) return null
   const ts = turn.assistantCalls[0]!.timestamp
@@ -3289,9 +3372,13 @@ export function filterProjectsByDays(projects: ProjectSummary[], days: Set<strin
     const anchors: SessionSummary[] = [...(project.subagentAnchors ?? [])]
     const survivingIdentities = new Set<string>()
     for (const session of project.sessions) {
-      const turns = session.turns.filter(turn => {
-        const ds = turnDayString(turn)
-        return ds !== null && days.has(ds)
+      // Slice turns per call by the selected days (not whole-turn keep/drop):
+      // a midnight-straddling turn contributes the calls that actually
+      // happened on each selected day (issue #852, same split rule as the
+      // range slicers — see classifiedTurnSlicedToDays).
+      const turns = session.turns.flatMap(turn => {
+        const sliced = classifiedTurnSlicedToDays(turn, days)
+        return sliced ? [sliced] : []
       })
       if (turns.length === 0) {
         if (isSpawnParent(session)) anchors.push(session)
@@ -3498,7 +3585,13 @@ export function filterProjectsByDateRange(projects: ProjectSummary[], dateRange:
     const anchors: SessionSummary[] = [...(project.subagentAnchors ?? [])]
     const survivingIdentities = new Set<string>()
     for (const session of project.sessions) {
-      const turns = session.turns.filter(turn => turnIsInDateRange(turn, dateRange))
+      // Slice turns per call (not whole-turn keep/drop) so a midnight-
+      // straddling turn keeps the calls that landed inside the range — the
+      // same split rule as the parse-time slicers (issue #852).
+      const turns = session.turns.flatMap(turn => {
+        const sliced = classifiedTurnSlicedToRange(turn, dateRange)
+        return sliced ? [sliced] : []
+      })
       if (turns.length === 0) {
         if (isSpawnParent(session)) anchors.push(session)
         continue
@@ -3525,6 +3618,15 @@ export function isSessionHydrationComplete(): boolean {
   return sessionHydrationComplete
 }
 
+// Set by the read-only serving paths when the snapshot they served did NOT
+// match what is on disk: in read-only mode a changed file is served at its
+// stale fingerprint and a file with no cache entry is skipped entirely. A
+// read-only run under which nothing changed is equivalent to a full parse and
+// stays trustworthy; one that skipped real data is a PARTIAL hydration, and
+// finalizing daily history off it freezes the days it never saw out of the
+// chart (gapStart = lastComputedDate + 1 never looks back at them).
+let readOnlyServedStale = false
+
 export async function parseAllSessions(dateRange?: DateRange, providerFilter?: string): Promise<ProjectSummary[]> {
   const key = cacheKey(dateRange, providerFilter)
   const cached = sessionCache.get(key)
@@ -3594,6 +3696,7 @@ async function runParse(
   options: RunParseOptions = {},
 ): Promise<ProjectSummary[]> {
   const { isCold = false, readOnly = false, refreshLock } = options
+  readOnlyServedStale = false
   const seenMsgIds = new Set<string>()
   const seenKeys = new Set<string>()
   const allSources = await discoverAllSessions(providerFilter)
@@ -3633,15 +3736,26 @@ async function runParse(
       ? { id: s.sourceId, label: s.sourceLabel, path: s.sourcePath, kind: s.sourceKind }
       : undefined,
   }))
+  // Claude is scanned through scanProjectDirs rather than parseProviderSources, so
+  // it needs the same provider-filter guard the durable-orphan loop below applies at
+  // its own level. Without it a --provider <other> run still enters scanProjectDirs
+  // with an empty dirs list, and the orphan pass there (which reads the whole cached
+  // claude section) treats every cached file as "no longer discovered" and re-injects
+  // it into the result. Note this is deliberately NOT a `claudeDirs.length > 0` check:
+  // when claude IS in scope but every transcript has been pruned from disk, that
+  // orphan pass is exactly what keeps PR-attributed spend from vanishing.
+  const claudeInScope = !providerFilter || providerFilter === 'all' || providerFilter === 'claude'
   if (claudeSources.length > 0) emitScanProgress({ kind: 'provider', provider: 'claude', state: 'start' })
   let claudeProjects: ProjectSummary[] = []
-  try {
-    claudeProjects = await scanProjectDirs(claudeDirs, seenMsgIds, diskCache, dateRange, saveProgress, readOnly)
-    if (claudeSources.length > 0) emitScanProgress({ kind: 'provider', provider: 'claude', state: 'done', files: claudeSources.length })
-  } catch (err) {
-    if (!isPermissionError(err)) throw err
-    process.stderr.write(`codeburn: skipped claude data (permission denied; grant Full Disk Access to include it)\n`)
-    emitScanProgress({ kind: 'provider', provider: 'claude', state: 'skipped' })
+  if (claudeInScope) {
+    try {
+      claudeProjects = await scanProjectDirs(claudeDirs, seenMsgIds, diskCache, dateRange, saveProgress, readOnly)
+      if (claudeSources.length > 0) emitScanProgress({ kind: 'provider', provider: 'claude', state: 'done', files: claudeSources.length })
+    } catch (err) {
+      if (!isPermissionError(err)) throw err
+      process.stderr.write(`codeburn: skipped claude data (permission denied; grant Full Disk Access to include it)\n`)
+      emitScanProgress({ kind: 'provider', provider: 'claude', state: 'skipped' })
+    }
   }
 
   const otherProjects: ProjectSummary[] = []
@@ -3698,7 +3812,10 @@ async function runParse(
       if (refreshLock) throw new RefreshPublicationUnavailableError()
     }
   }
-  sessionHydrationComplete = true
+  // Assigned, not forced true: a read-only run that had to skip or stale real
+  // files reached the end of the scan without hydrating everything, and the
+  // daily backfill must not finalize history off it.
+  sessionHydrationComplete = !readOnly || !readOnlyServedStale
 
   // Merge across providers by normalised project path so the same repository
   // is not double-counted when it was worked on with more than one tool

src/providers/codex.ts

@@ -32,6 +32,9 @@ const modelDisplayEntries = Object.entries(modelDisplayNames).sort((a, b) => b[0
 
 const toolNameMap: Record<string, string> = {
   exec_command: 'Bash',
+  // Codex Desktop's custom-tool transport uses the shorter `exec` name for
+  // the same shell tool that CLI rollouts record as `exec_command`.
+  exec: 'Bash',
   read_file: 'Read',
   write_file: 'Edit',
   apply_diff: 'Edit',
@@ -96,6 +99,11 @@ type CodexEntry = {
   timestamp?: string
   payload?: {
     type?: string
+    turn_id?: string
+    call_id?: string
+    started_at?: number
+    duration_ms?: number
+    duration?: { secs?: number; nanos?: number } | string
     role?: string
     cwd?: string
     model_provider?: string
@@ -104,6 +112,7 @@ type CodexEntry = {
     forked_from_id?: string
     model?: string
     name?: string
+    invocation?: { server?: string; tool?: string }
     content?: Array<{ type?: string; text?: string }>
     info?: {
       model?: string
@@ -196,11 +205,128 @@ function getRawJsonStringField(head: string, field: string): string | undefined
   }
 }
 
+function getRawJsonNumberField(head: string, field: string): number | undefined {
+  const match = new RegExp(`"${field}"\\s*:\\s*(-?\\d+(?:\\.\\d+)?)`).exec(head)
+  if (!match) return undefined
+  const value = Number(match[1])
+  return Number.isFinite(value) ? value : undefined
+}
+
+function getRawPayloadFieldWindow(source: Buffer, field: string, windowBytes = 4096): string | undefined {
+  const payloadKey = Buffer.from('"payload"')
+  const payloadIndex = source.indexOf(payloadKey)
+  if (payloadIndex < 0) return undefined
+  let payloadStart = source.indexOf(0x7b, payloadIndex + payloadKey.length) // {
+  if (payloadStart < 0) return undefined
+
+  let depth = 0
+  let inString = false
+  let escaped = false
+  for (let i = payloadStart; i < source.length; i++) {
+    const byte = source[i]!
+    if (inString) {
+      if (escaped) escaped = false
+      else if (byte === 0x5c) escaped = true // \\
+      else if (byte === 0x22) inString = false // "
+      continue
+    }
+    if (byte === 0x22) {
+      const keyStart = i + 1
+      let keyEnd = keyStart
+      let keyEscaped = false
+      for (; keyEnd < source.length; keyEnd++) {
+        const keyByte = source[keyEnd]!
+        if (keyEscaped) { keyEscaped = false; continue }
+        if (keyByte === 0x5c) { keyEscaped = true; continue }
+        if (keyByte === 0x22) break
+      }
+      if (depth === 1 && keyEnd < source.length) {
+        const key = source.subarray(keyStart, keyEnd).toString('utf-8')
+        let valueStart = keyEnd + 1
+        while (valueStart < source.length && (source[valueStart] === 0x20 || source[valueStart] === 0x09 || source[valueStart] === 0x0a || source[valueStart] === 0x0d)) valueStart++
+        if (source[valueStart] === 0x3a && key === field) {
+          return source.subarray(i, Math.min(source.length, i + windowBytes)).toString('utf-8')
+        }
+      }
+      i = keyEnd
+      inString = false
+      continue
+    }
+    if (byte === 0x22) inString = true
+    else if (byte === 0x7b || byte === 0x5b) depth++ // { or [
+    else if (byte === 0x7d || byte === 0x5d) depth-- // } or ]
+    if (depth < 0) break
+  }
+  return undefined
+}
+
+function getRawDurationMs(head: string): number | undefined {
+  const objectMatch = /"duration"\s*:\s*\{\s*"secs"\s*:\s*(-?\d+(?:\.\d+)?)\s*,\s*"nanos"\s*:\s*(-?\d+(?:\.\d+)?)\s*\}/.exec(head)
+  if (objectMatch) {
+    const seconds = Number(objectMatch[1])
+    const nanos = Number(objectMatch[2])
+    if (Number.isFinite(seconds) && Number.isFinite(nanos)) return seconds * 1000 + nanos / 1e6
+  }
+  const text = getRawJsonStringField(head, 'duration')
+  if (text) {
+    const match = /^(\d+(?:\.\d+)?)(ms|s)?$/.exec(text.trim())
+    if (match) {
+      const value = Number(match[1])
+      if (Number.isFinite(value)) return value * (match[2] === 's' ? 1000 : 1)
+    }
+  }
+  return undefined
+}
+
+function durationValueMs(value: unknown): number | undefined {
+  if (typeof value === 'number' && Number.isFinite(value)) return value
+  if (typeof value === 'object' && value) {
+    const record = value as Record<string, unknown>
+    const seconds = record['secs']
+    const nanos = record['nanos']
+    if (typeof seconds === 'number' && typeof nanos === 'number' && Number.isFinite(seconds) && Number.isFinite(nanos)) {
+      return seconds * 1000 + nanos / 1e6
+    }
+  }
+  if (typeof value === 'string') {
+    const match = /^(\d+(?:\.\d+)?)(ms|s)?$/.exec(value.trim())
+    if (match) {
+      const parsed = Number(match[1])
+      if (Number.isFinite(parsed)) return parsed * (match[2] === 's' ? 1000 : 1)
+    }
+  }
+  return undefined
+}
+
+function getRawTokenUsage(head: string, field: 'last_token_usage' | 'total_token_usage'): CodexTokenUsage | undefined {
+  const match = new RegExp(`"${field}"\\s*:\\s*\\{([^}]*)\\}`).exec(head)
+  if (!match) return undefined
+  const body = match[1]!
+  return {
+    input_tokens: getRawJsonNumberField(body, 'input_tokens'),
+    cached_input_tokens: getRawJsonNumberField(body, 'cached_input_tokens'),
+    output_tokens: getRawJsonNumberField(body, 'output_tokens'),
+    reasoning_output_tokens: getRawJsonNumberField(body, 'reasoning_output_tokens'),
+    total_tokens: getRawJsonNumberField(body, 'total_tokens'),
+  }
+}
+
 function payloadHead(head: string): string {
   const idx = head.indexOf('"payload"')
   return idx === -1 ? head : head.slice(idx)
 }
 
+function getRawInvocation(head: string): { server?: string; tool?: string } | undefined {
+  const idx = head.indexOf('"invocation"')
+  if (idx === -1) return undefined
+  // Server/tool are shallow fields and precede the potentially huge arguments
+  // object in Codex MCP records. Limit this scan to keep compact parsing cheap.
+  const invocationHead = head.slice(idx, idx + 8192)
+  const server = getRawJsonStringField(invocationHead, 'server')
+  const tool = getRawJsonStringField(invocationHead, 'tool')
+  return server || tool ? { server, tool } : undefined
+}
+
 function countJsonStringBytes(source: Buffer, valueStart: number): number {
   let count = 0
   for (let i = valueStart; i < source.length; i++) {
@@ -270,6 +396,31 @@ function parseCodexLine(line: string | Buffer): CodexEntry | null {
   const pHead = payloadHead(head)
   const payloadType = getRawJsonStringField(pHead, 'type')
   const role = getRawJsonStringField(pHead, 'role')
+  // task_complete appends the potentially huge final assistant message before
+  // its duration fields. Fall back to the full Buffer only for this event so
+  // timing metadata is not lost when the compact head stops early.
+  const needsTimingTail = type === 'event_msg' && (payloadType === 'task_complete' || payloadType === 'mcp_tool_call_end')
+  const timingTail = needsTimingTail && line.length > RAW_HEAD_BYTES
+    ? line.subarray(Math.max(0, line.length - 16 * 1024)).toString('utf-8')
+    : pHead
+  const timingNumber = (field: string): number | undefined =>
+    getRawJsonNumberField(pHead, field) ?? getRawJsonNumberField(timingTail, field)
+  // MCP records can place a large invocation.arguments object before duration
+  // and a large result after it. Searching a small window around the field
+  // avoids materializing the middle of the Buffer while still preserving wait
+  // timing for those records.
+  const payloadDuration = payloadType === 'mcp_tool_call_end'
+    ? getRawDurationMs(getRawPayloadFieldWindow(line, 'duration') ?? '')
+    : undefined
+  const timingDuration = payloadDuration ?? getRawDurationMs(pHead) ?? getRawDurationMs(timingTail)
+  const compactModel = getRawJsonStringField(pHead, 'model')
+  const compactModelName = getRawJsonStringField(pHead, 'model_name')
+  const compactLastUsage = getRawTokenUsage(pHead, 'last_token_usage')
+  const compactTotalUsage = getRawTokenUsage(pHead, 'total_token_usage')
+  const compactInfo = compactModel || compactModelName || compactLastUsage || compactTotalUsage
+    ? { model: compactModel, model_name: compactModelName, last_token_usage: compactLastUsage, total_token_usage: compactTotalUsage }
+    : undefined
+  const invocation = getRawInvocation(pHead) ?? getRawInvocation(timingTail)
 
   const entry: CodexEntry = {
     type,
@@ -284,6 +435,16 @@ function parseCodexLine(line: string | Buffer): CodexEntry | null {
       forked_from_id: getRawJsonStringField(pHead, 'forked_from_id'),
       model: getRawJsonStringField(pHead, 'model'),
       name: getRawJsonStringField(pHead, 'name'),
+      invocation,
+      call_id: getRawJsonStringField(pHead, 'call_id'),
+      turn_id: getRawJsonStringField(pHead, 'turn_id'),
+      // On mcp_tool_call_end a coincidental `duration_ms` inside the large
+      // invocation.arguments object can shadow the payload-level duration, so the
+      // depth-aware value wins. The naive scan stays as the fallback for
+      // task_complete, which records duration_ms at the payload level directly.
+      duration_ms: timingDuration ?? timingNumber('duration_ms'),
+      started_at: timingNumber('started_at'),
+      info: compactInfo,
     },
   }
 
@@ -300,6 +461,8 @@ async function discoverSessionFile(filePath: string): Promise<SessionSource | nu
   const s = await stat(filePath).catch(() => null)
   if (!s?.isFile()) return null
 
+  // Fast path: cached results already know the project, so avoid opening the
+  // file. This keeps discovery cheap on large session directories.
   const cachedProject = await getCachedCodexProject(filePath)
   if (cachedProject) {
     return { path: filePath, project: cachedProject, provider: 'codex' }
@@ -314,6 +477,12 @@ async function discoverSessionFile(filePath: string): Promise<SessionSource | nu
 
 async function discoverSessionsInDir(codexDir: string): Promise<SessionSource[]> {
   const sources: SessionSource[] = []
+  // Codex archives a session by moving it from sessions/YYYY/MM/DD/ to
+  // archived_sessions/, keeping the same basename. Deduplicate by basename so
+  // a session does not appear twice while it exists in both roots. This avoids
+  // reading every file to extract session_id and preserves the cheap cached
+  // fast path.
+  const seenBasenames = new Set<string>()
   const sessionsDir = join(codexDir, 'sessions')
 
   const years = await readdir(sessionsDir).catch(() => [] as string[])
@@ -335,8 +504,9 @@ async function discoverSessionsInDir(codexDir: string): Promise<SessionSource[]>
 
         for (const file of files) {
           if (!file.startsWith('rollout-') || !file.endsWith('.jsonl')) continue
-          const filePath = join(dayDir, file)
-          const source = await discoverSessionFile(filePath)
+          if (seenBasenames.has(file)) continue
+          seenBasenames.add(file)
+          const source = await discoverSessionFile(join(dayDir, file))
           if (source) sources.push(source)
         }
       }
@@ -345,10 +515,14 @@ async function discoverSessionsInDir(codexDir: string): Promise<SessionSource[]>
 
   // Codex moves archived sessions into a flat directory. Keep them in usage
   // reports so archiving a conversation does not erase its historical usage.
+  // Call-level deduplication (seenKeys) already collapses any remaining
+  // archived copies, while basename dedup above prevents double discovery.
   const archivedDir = join(codexDir, 'archived_sessions')
   const archivedFiles = await readdir(archivedDir).catch(() => [] as string[])
   for (const file of archivedFiles) {
     if (!file.startsWith('rollout-') || !file.endsWith('.jsonl')) continue
+    if (seenBasenames.has(file)) continue
+    seenBasenames.add(file)
     const source = await discoverSessionFile(join(archivedDir, file))
     if (source) sources.push(source)
   }
@@ -410,6 +584,16 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
       let currentTurnId = `${sessionId}:t0`
       let sawAnyLine = false
       const results: ParsedProviderCall[] = []
+      // Calls decoded since the last task_started, held back so task_complete can
+      // stamp active/toolWait timing before they are appended to results. Emitting
+      // a task only once its timing is known keeps single-pass and split/resume
+      // decodes in agreement instead of back-patching already-emitted calls.
+      // Bounded by one task's calls; flushed at the next task_started and at EOF.
+      let pendingTaskCalls: ParsedProviderCall[] = []
+      let taskGeneratedTokens = 0
+      let taskToolIntervals: Array<[number, number]> = []
+      let taskStartedAt: number | undefined
+      const openToolStarts = new Map<string, number>()
 
       // Stream the session file line by line. Heavy Codex sessions can exceed
       // 250 MB on disk; reading the entire file into a string would either hit
@@ -437,7 +621,32 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
           continue
         }
 
-        if (entry.type === 'response_item' && entry.payload?.type === 'function_call') {
+        const isForkReplay = Boolean(forkCutoff && entry.timestamp && entry.timestamp < forkCutoff)
+        if (isForkReplay && (
+          entry.payload?.type === 'task_started' ||
+          entry.payload?.type === 'task_complete' ||
+          entry.payload?.type === 'function_call' ||
+          entry.payload?.type === 'function_call_output' ||
+          entry.payload?.type === 'custom_tool_call' ||
+          entry.payload?.type === 'custom_tool_call_output' ||
+          entry.payload?.type === 'mcp_tool_call_end' ||
+          entry.payload?.type === 'patch_apply_end'
+        )) continue
+
+        if (entry.type === 'event_msg' && entry.payload?.type === 'task_started') {
+          // Emit the previous task. If it never reached task_complete its timing
+          // fields simply stay unset, matching the un-buffered behaviour.
+          results.push(...pendingTaskCalls)
+          pendingTaskCalls = []
+          taskGeneratedTokens = 0
+          taskToolIntervals = []
+          const startedAt = entry.timestamp ? Date.parse(entry.timestamp) : NaN
+          taskStartedAt = Number.isFinite(startedAt) ? startedAt : undefined
+          openToolStarts.clear()
+          continue
+        }
+
+        if (entry.type === 'response_item' && (entry.payload?.type === 'function_call' || entry.payload?.type === 'custom_tool_call')) {
           const rawName = entry.payload.name ?? ''
           const mapped = toolNameMap[rawName] ?? rawName
           pendingTools.push(mapped)
@@ -459,10 +668,52 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
               pendingToolSequence.push([{ tool: mcpTool }])
             }
           }
+          const callId = entry.payload.call_id
+          const started = entry.timestamp ? Date.parse(entry.timestamp) : NaN
+          if (callId && Number.isFinite(started)) openToolStarts.set(callId, started)
           pendingToolSequence.push([call])
           continue
         }
 
+        if (entry.type === 'response_item' && (entry.payload?.type === 'function_call_output' || entry.payload?.type === 'custom_tool_call_output')) {
+          const callId = entry.payload.call_id
+          const ended = entry.timestamp ? Date.parse(entry.timestamp) : NaN
+          const started = callId ? openToolStarts.get(callId) : undefined
+          if (started !== undefined && Number.isFinite(ended) && ended > started) taskToolIntervals.push([started, ended])
+          if (callId) openToolStarts.delete(callId)
+          continue
+        }
+
+        if (entry.type === 'event_msg' && entry.payload?.type === 'task_complete') {
+          const durationMs = entry.payload.duration_ms
+          if (typeof durationMs === 'number' && durationMs > 0 && taskGeneratedTokens > 0 && pendingTaskCalls.length > 0) {
+            const completedAt = entry.timestamp ? Date.parse(entry.timestamp) : NaN
+            const windowStart = taskStartedAt ?? (Number.isFinite(completedAt) ? completedAt - durationMs : undefined)
+            const windowEnd = windowStart !== undefined ? windowStart + durationMs : undefined
+            const clipped = taskToolIntervals.map(([start, end]) => [
+              windowStart !== undefined ? Math.max(start, windowStart) : start,
+              windowEnd !== undefined ? Math.min(end, windowEnd) : end,
+            ] as [number, number]).filter(([start, end]) => end > start)
+            const merged = clipped.sort((a, b) => a[0] - b[0]).reduce<Array<[number, number]>>((acc, interval) => {
+              const previous = acc.at(-1)
+              if (previous && interval[0] <= previous[1]) previous[1] = Math.max(previous[1], interval[1])
+              else acc.push([...interval])
+              return acc
+            }, [])
+            const toolWaitMs = Math.min(durationMs, merged.reduce((sum, interval) => sum + interval[1] - interval[0], 0))
+            const activeMs = durationMs - toolWaitMs
+            if (activeMs <= 0) continue
+            for (const call of pendingTaskCalls) {
+              const generated = call.outputTokens + call.reasoningTokens
+              if (generated <= 0) continue
+              call.activeGeneratedTokens = generated
+              call.activeDurationMs = activeMs * (generated / taskGeneratedTokens)
+              call.toolWaitMs = toolWaitMs * (generated / taskGeneratedTokens)
+            }
+          }
+          continue
+        }
+
         if (entry.type === 'event_msg' && entry.payload?.type === 'patch_apply_end') {
           pendingTools.push('Edit')
           const p = entry.payload as Record<string, unknown>
@@ -490,6 +741,11 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
         // attributed. Rebuild the canonical `mcp__<server>__<tool>` name the
         // classifier recognizes.
         if (entry.type === 'event_msg' && entry.payload?.type === 'mcp_tool_call_end') {
+          const endedAt = entry.timestamp ? Date.parse(entry.timestamp) : NaN
+          const durationMs = entry.payload.duration_ms ?? durationValueMs(entry.payload.duration)
+          if (typeof durationMs === 'number' && durationMs > 0 && Number.isFinite(endedAt)) {
+            taskToolIntervals.push([endedAt - durationMs, endedAt])
+          }
           const inv = (entry.payload as Record<string, unknown>)['invocation'] as Record<string, unknown> | undefined
           const server = typeof inv?.['server'] === 'string' ? inv['server'] as string : ''
           const tool = typeof inv?.['tool'] === 'string' ? inv['tool'] as string : ''
@@ -542,7 +798,7 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
 
             const costUSD = calculateCost(model, estInput, estOutput, 0, 0, 0)
 
-            results.push({
+            pendingTaskCalls.push({
               provider: 'codex',
               model,
               inputTokens: estInput,
@@ -568,6 +824,7 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
               ...(pendingLocRemoved ? { locRemoved: pendingLocRemoved } : {}),
               ...(pendingEditFailed ? { editFailed: pendingEditFailed } : {}),
             })
+            taskGeneratedTokens += estOutput
 
             pendingTools = []
             pendingToolSequence = []
@@ -660,7 +917,7 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
             0,
           )
 
-          results.push({
+          pendingTaskCalls.push({
             provider: 'codex',
             model,
             inputTokens: uncachedInputTokens,
@@ -685,6 +942,7 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
             ...(pendingLocRemoved ? { locRemoved: pendingLocRemoved } : {}),
             ...(pendingEditFailed ? { editFailed: pendingEditFailed } : {}),
           })
+          taskGeneratedTokens += outputTokens + reasoningTokens
 
           pendingTools = []
           pendingToolSequence = []
@@ -701,6 +959,9 @@ function createParser(source: SessionSource, seenKeys: Set<string>): SessionPars
       // result set against a fingerprint that would otherwise be re-parsed.
       if (!sawAnyLine) return
 
+      // Flush the final task, which has no following task_started to trigger it.
+      results.push(...pendingTaskCalls)
+
       await writeCachedCodexResults(source.path, source.project, results, fp)
 
       for (const call of results) {

src/providers/types.ts

@@ -53,6 +53,9 @@ export type ParsedProviderCall = {
   // Exact provider-recorded cwd, kept separately because projectPath may later
   // canonicalize a linked worktree to its main repository.
   workingDirectory?: string
+  activeDurationMs?: number
+  activeGeneratedTokens?: number
+  toolWaitMs?: number
 }
 
 // A directory or database file that a provider's discoverSessions() scans.

src/session-cache.ts

@@ -51,6 +51,9 @@ export type CachedCall = {
   toolErrors?: number
   // Codex: count of this call's patch applications with success === false.
   editFailed?: number
+  activeDurationMs?: number
+  activeGeneratedTokens?: number
+  toolWaitMs?: number
 }
 
 export type CachedTurn = {
@@ -213,7 +216,7 @@ export const PROVIDER_PARSE_VERSIONS: Record<string, string> = {
   // rich-session-capture-v1: per-call LOC deltas + editFailed from
   // patch_apply_end. (The codex-results.json CODEX_CACHE_VERSION is bumped in
   // lockstep so the pre-session-cache layer re-parses too.)
-  codex: 'mcp-attribution-v2-est-cost-rich-capture-v1-cross-provider-pr-v1',
+  codex: 'mcp-attribution-v5-est-cost-active-timing-mcp-wait-rich-capture-v1-cross-provider-pr-v1',
   cursor: 'composer-anchored-crediting-v1-est-cost',
   'cursor-agent': 'workspaceless-transcript-v1',
   copilot: 'cli-shutdown-cost-v1-skills',
@@ -337,6 +340,9 @@ function validateCall(c: unknown): c is CachedCall {
     && (o['speed'] === 'standard' || o['speed'] === 'fast')
     && isOptionalNum(o['costUSD'])
     && isOptionalBool(o['isEstimated'])
+    && isOptionalNum(o['activeDurationMs'])
+    && isOptionalNum(o['activeGeneratedTokens'])
+    && isOptionalNum(o['toolWaitMs'])
     && isStringArray(o['tools'])
     && isStringArray(o['bashCommands'])
     && isStringArray(o['skills'])

src/sync/cli.ts

@@ -22,7 +22,8 @@ import {
 } from './auth.js'
 import { createCredentialStore } from './credentials.js'
 import { readSyncConfig, writeSyncConfig, deleteSyncConfig, updateLastSync } from './config.js'
-import { collectUnsentCalls, sendBatches, batchCalls, MAX_PER_PUSH } from './push.js'
+import { collectUnsentCalls, collectUnsentAttribution, sendBatches, sendAttributionBatches, batchCalls, MAX_PER_PUSH, MAX_ATTRIBUTION_PER_PUSH, type PushResult } from './push.js'
+import { batchAttributionItems } from './otlp.js'
 
 export function registerSyncCommands(program: Command): void {
   const sync = program
@@ -226,7 +227,8 @@ export function registerSyncCommands(program: Command): void {
     .description('Push unsent telemetry data to the configured endpoint')
     .option('--since <period>', 'Time window: today, 7d, 30d, month, all (max 6 months)', '7d')
     .option('--dry-run', 'Show what would be sent without sending')
-    .action(async (opts: { since: string; dryRun?: boolean }) => {
+    .option('--attribution', 'Also push git attribution spans (session→commit correlation from `codeburn yield`, plus PR links). Sends normalized repo remotes and commit SHAs to the endpoint.')
+    .action(async (opts: { since: string; dryRun?: boolean; attribution?: boolean }) => {
       const config = readSyncConfig()
       if (!config) {
         process.stderr.write('Sync not configured. Run `codeburn sync setup <url>` first.\n')
@@ -277,6 +279,18 @@ export function registerSyncCommands(program: Command): void {
         // Flatten + filter against sent-ledger
         const { allCalls, unsent } = collectUnsentCalls(projects)
 
+        // Attribution records (opt-in): session→commit correlation computed
+        // locally from the same parsed projects. Reuses the yield engine.
+        let attributionUnsent: Awaited<ReturnType<typeof collectUnsentAttribution>>['unsent'] = []
+        let attributionTotal = 0
+        if (opts.attribution) {
+          const { computeAttributionRecords } = await import('../yield.js')
+          const records = computeAttributionRecords(projects, range, process.cwd())
+          const collected = collectUnsentAttribution(records)
+          attributionUnsent = collected.unsent
+          attributionTotal = collected.allItems.length
+        }
+
         if (opts.dryRun) {
           const toPushCount = Math.min(unsent.length, MAX_PER_PUSH)
           const cost = unsent.slice(0, MAX_PER_PUSH).reduce((s, c) => s + c.call.costUSD, 0)
@@ -285,10 +299,19 @@ export function registerSyncCommands(program: Command): void {
           if (unsent.length > MAX_PER_PUSH) {
             process.stderr.write(`[dry-run] ${unsent.length - MAX_PER_PUSH} more calls exceed the ${MAX_PER_PUSH} safety limit — a second push would be needed\n`)
           }
+          if (opts.attribution) {
+            const toPushAttr = attributionUnsent.slice(0, MAX_ATTRIBUTION_PER_PUSH)
+            const commits = toPushAttr.filter(i => i.kind === 'commit').length
+            const sessions = toPushAttr.filter(i => i.kind === 'session').length
+            process.stderr.write(`[dry-run] Attribution: ${attributionTotal} facts total, would push ${toPushAttr.length} (${sessions} sessions, ${commits} commits)\n`)
+            if (attributionUnsent.length > MAX_ATTRIBUTION_PER_PUSH) {
+              process.stderr.write(`[dry-run] ${attributionUnsent.length - MAX_ATTRIBUTION_PER_PUSH} more attribution facts exceed the ${MAX_ATTRIBUTION_PER_PUSH} safety limit — a second push would be needed\n`)
+            }
+          }
           return
         }
 
-        if (unsent.length === 0) {
+        if (unsent.length === 0 && attributionUnsent.length === 0) {
           process.stderr.write(`Nothing to push (${allCalls.length} calls already synced).\n`)
           updateLastSync()
           return
@@ -302,15 +325,18 @@ export function registerSyncCommands(program: Command): void {
 
         // Batch and send (loops until done; waits out 429 rate limits)
         const discoveryDoc = await fetchDiscoveryDoc(config.baseUrl)
-        const batches = batchCalls(toPush, discoveryDoc.max_batch_size)
         const endpoint = `${config.baseUrl}${config.tracesPath}`
 
-        const result = await sendBatches({
-          endpoint,
-          accessToken: tokens.access_token,
-          batches,
-          log: msg => process.stderr.write(`${msg}\n`),
-        })
+        let result: PushResult = { outcome: 'complete', totalSent: 0, totalRejected: 0, totalCostSent: 0 }
+        if (toPush.length > 0) {
+          const batches = batchCalls(toPush, discoveryDoc.max_batch_size)
+          result = await sendBatches({
+            endpoint,
+            accessToken: tokens.access_token,
+            batches,
+            log: msg => process.stderr.write(`${msg}\n`),
+          })
+        }
 
         if (result.outcome === 'auth-rejected') {
           process.stderr.write('Auth rejected by server. Run `codeburn sync setup` to re-authenticate.\n')
@@ -323,11 +349,50 @@ export function registerSyncCommands(program: Command): void {
           process.stderr.write(`Server error (HTTP ${result.httpStatus}). Remaining calls will be sent on the next push.\n`)
         }
 
+        // Attribution spans ride the same endpoint after the usage push
+        // completes. Skipped when the usage push hit rate limits or server
+        // errors — the endpoint is already unhappy; both retry on next push.
+        let attrResult: PushResult | null = null
+        if (opts.attribution && attributionUnsent.length > 0) {
+          if (result.outcome === 'complete') {
+            // Safety valve, mirroring the usage-call cap
+            const attrToPush = attributionUnsent.slice(0, MAX_ATTRIBUTION_PER_PUSH)
+            if (attributionUnsent.length > MAX_ATTRIBUTION_PER_PUSH) {
+              process.stderr.write(`${attributionUnsent.length} attribution facts exceed the ${MAX_ATTRIBUTION_PER_PUSH} safety limit. Pushing first ${MAX_ATTRIBUTION_PER_PUSH}; run again to continue.\n`)
+            }
+            const attrBatches = batchAttributionItems(attrToPush, discoveryDoc.max_batch_size)
+            attrResult = await sendAttributionBatches({
+              endpoint,
+              accessToken: tokens.access_token,
+              batches: attrBatches,
+              log: msg => process.stderr.write(`${msg}\n`),
+            })
+            if (attrResult.outcome === 'auth-rejected') {
+              process.stderr.write('Auth rejected by server during attribution push. Run `codeburn sync setup` to re-authenticate.\n')
+              process.exit(1)
+            }
+            if (attrResult.outcome === 'rate-limited') {
+              process.stderr.write(`Rate limited during attribution push — gave up after repeated retries. Remaining facts will be sent on the next push.\n`)
+            }
+            if (attrResult.outcome === 'server-error') {
+              process.stderr.write(`Server error (HTTP ${attrResult.httpStatus}) during attribution push. Remaining facts will be sent on the next push.\n`)
+            }
+          } else {
+            process.stderr.write(`Skipping attribution push (${attributionUnsent.length} facts) — will retry on next push.\n`)
+          }
+        }
+
         // Update lastSync
         updateLastSync()
 
         // Summary
         process.stderr.write(`\nSynced ${result.totalSent} calls ($${result.totalCostSent.toFixed(2)}) to ${config.baseUrl}\n`)
+        if (attrResult) {
+          const attrSuffix = attrResult.outcome !== 'complete'
+            ? ` (push incomplete — remainder retries next push)`
+            : attrResult.totalRejected > 0 ? `, ${attrResult.totalRejected} rejected (will retry)` : ''
+          process.stderr.write(`  Attribution: ${attrResult.totalSent} facts synced${attrSuffix}\n`)
+        }
         if (result.totalRejected > 0) {
           process.stderr.write(`  ${result.totalRejected} spans rejected (will retry on next push)\n`)
         }
@@ -337,7 +402,7 @@ export function registerSyncCommands(program: Command): void {
 
         // Non-zero exit when the push did not complete, so cron/scripts can
         // detect it. Ledgered progress is kept; next push resumes.
-        if (result.outcome !== 'complete') {
+        if (result.outcome !== 'complete' || (attrResult !== null && attrResult.outcome !== 'complete')) {
           process.exitCode = 1
         }
       } catch (err) {

src/sync/otlp.ts

@@ -8,6 +8,7 @@
 import { createHash } from 'crypto'
 import { hostname, userInfo } from 'os'
 import type { ParsedApiCall } from '../types.js'
+import type { SessionAttributionRecord } from '../yield.js'
 
 export interface OtlpSpan {
   traceId: string
@@ -141,3 +142,175 @@ export function batchCalls(calls: CallWithSession[], maxBatchSize: number): Call
   }
   return batches
 }
+
+// --- Attribution spans (sync push --attribution) ---
+
+export const SESSION_ATTRIBUTION_SPAN_NAME = 'codeburn.session.attribution'
+export const COMMIT_ATTRIBUTION_SPAN_NAME = 'codeburn.commit'
+
+/**
+ * A single ledger-able attribution unit: either one session-level record
+ * (repo + PR links + commit count) or one attributed commit. The dedup key
+ * encodes the mutable state (inMain/wasReverted for commits; repo, PR links,
+ * and commit set for sessions), so a state TRANSITION mints a new key and the
+ * updated fact is re-sent on the next push — the receiver upserts by
+ * (repo, sha) / (session). Identical states dedupe via the sent-ledger.
+ */
+export type AttributionItem = {
+  kind: 'session' | 'commit'
+  dedupKey: string
+  /** Span start: commit author time for commits, session start for sessions. ISO 8601. */
+  timestamp: string
+  /** Span end for session items (session lastTimestamp). Absent for commits. */
+  endTimestamp?: string
+  sessionId: string
+  project: string
+  repo: string | null
+  // session kind
+  prLinks?: string[]
+  commitCount?: number
+  // commit kind
+  sha?: string
+  inMain?: boolean
+  wasReverted?: boolean
+}
+
+function stateHash(parts: string[]): string {
+  return createHash('sha256').update(parts.join('\u001e')).digest('hex').slice(0, 16)
+}
+
+/** Deterministic dedup key for a commit attribution fact (state included). */
+export function commitAttributionKey(sessionId: string, sha: string, inMain: boolean, wasReverted: boolean): string {
+  return `attr:c:${sessionId}:${sha}:${inMain ? 1 : 0}${wasReverted ? 1 : 0}`
+}
+
+/** Deterministic dedup key for a session attribution fact (state included). */
+export function sessionAttributionKey(record: SessionAttributionRecord): string {
+  const commitStates = record.commits
+    .map(c => `${c.sha}:${c.inMain ? 1 : 0}${c.wasReverted ? 1 : 0}`)
+    .sort()
+  // Project and both window timestamps are part of the state: an ongoing
+  // session whose window grew (or whose project resolution changed) re-emits
+  // with the corrected span times instead of freezing at first send.
+  return `attr:s:${record.sessionId}:${stateHash([
+    record.repo ?? '',
+    record.project,
+    record.firstTimestamp,
+    record.lastTimestamp,
+    ...record.prLinks,
+    ...commitStates,
+  ])}`
+}
+
+/** Ledger-key prefix for a session's attribution facts (any state). */
+export function sessionAttributionKeyPrefix(sessionId: string): string {
+  return `attr:s:${sessionId}:`
+}
+
+/** Flatten attribution records into ledger-able items (one session item + one per commit). */
+export function flattenAttributionRecords(records: SessionAttributionRecord[]): AttributionItem[] {
+  const items: AttributionItem[] = []
+  for (const record of records) {
+    items.push({
+      kind: 'session',
+      dedupKey: sessionAttributionKey(record),
+      timestamp: record.firstTimestamp,
+      endTimestamp: record.lastTimestamp,
+      sessionId: record.sessionId,
+      project: record.project,
+      repo: record.repo,
+      prLinks: record.prLinks,
+      commitCount: record.commits.length,
+    })
+    for (const commit of record.commits) {
+      items.push({
+        kind: 'commit',
+        dedupKey: commitAttributionKey(record.sessionId, commit.sha, commit.inMain, commit.wasReverted),
+        timestamp: commit.timestamp,
+        sessionId: record.sessionId,
+        project: record.project,
+        repo: record.repo,
+        sha: commit.sha,
+        inMain: commit.inMain,
+        wasReverted: commit.wasReverted,
+      })
+    }
+  }
+  return items
+}
+
+/**
+ * Build an OTLP payload from attribution items. Spans share the session's
+ * traceId with the usage spans (`deriveTraceId(sessionId)`), so a receiver
+ * can correlate cost and attribution without any extra key.
+ */
+export function buildAttributionOtlpPayload(items: AttributionItem[]): OtlpPayload {
+  const deviceId = getDeviceId()
+
+  const spans: OtlpSpan[] = items.map(item => {
+    const startNano = toUnixNano(item.timestamp)
+    // Clamp like the usage builder: end is never 0 (malformed timestamp) and
+    // never earlier than start + 1ms (out-of-order session timestamps).
+    const minEndNano = BigInt(startNano) + 1_000_000n
+    const rawEndNano = item.endTimestamp ? BigInt(toUnixNano(item.endTimestamp)) : 0n
+    const endNano = (rawEndNano > minEndNano ? rawEndNano : minEndNano).toString()
+
+    const attributes: OtlpAttribute[] = [
+      { key: 'ai.session_id', value: { stringValue: item.sessionId } },
+      { key: 'ai.project', value: { stringValue: item.project } },
+    ]
+    if (item.repo) {
+      attributes.push({ key: 'git.repo', value: { stringValue: item.repo } })
+    }
+
+    if (item.kind === 'commit') {
+      attributes.push(
+        { key: 'git.sha', value: { stringValue: item.sha ?? '' } },
+        { key: 'git.in_main', value: { boolValue: item.inMain ?? false } },
+        { key: 'git.was_reverted', value: { boolValue: item.wasReverted ?? false } },
+      )
+    } else {
+      attributes.push({ key: 'git.commit_count', value: { intValue: String(item.commitCount ?? 0) } })
+      if (item.prLinks && item.prLinks.length > 0) {
+        attributes.push({
+          key: 'git.pr_links',
+          value: { arrayValue: { values: item.prLinks.map(u => ({ stringValue: u })) } },
+        })
+      }
+    }
+
+    return {
+      traceId: deriveTraceId(item.sessionId),
+      spanId: deriveSpanId(item.dedupKey),
+      name: item.kind === 'commit' ? COMMIT_ATTRIBUTION_SPAN_NAME : SESSION_ATTRIBUTION_SPAN_NAME,
+      startTimeUnixNano: startNano,
+      endTimeUnixNano: endNano,
+      attributes,
+    }
+  })
+
+  return {
+    resourceSpans: [{
+      resource: {
+        attributes: [
+          { key: 'codeburn.device_id', value: { stringValue: deviceId } },
+          // Honesty marker: this attribution is inferred (timestamp-window
+          // correlation), not declared. Receivers should label it as such.
+          { key: 'codeburn.attribution_methodology', value: { stringValue: 'timestamp-window' } },
+        ],
+      },
+      scopeSpans: [{
+        spans,
+      }],
+    }],
+  }
+}
+
+/** Split attribution items into batches of maxBatchSize. */
+export function batchAttributionItems(items: AttributionItem[], maxBatchSize: number): AttributionItem[][] {
+  const batches: AttributionItem[][] = []
+  for (let i = 0; i < items.length; i += maxBatchSize) {
+    batches.push(items.slice(i, i + maxBatchSize))
+  }
+  return batches
+}

src/sync/push.ts

@@ -8,7 +8,16 @@
 import type { ProjectSummary } from '../types.js'
 import { assertHttps } from './discovery.js'
 import { ledgerKeySet, appendToLedger, type LedgerEntry } from './ledger.js'
-import { buildOtlpPayload, batchCalls, type CallWithSession } from './otlp.js'
+import {
+  buildOtlpPayload,
+  batchCalls,
+  buildAttributionOtlpPayload,
+  flattenAttributionRecords,
+  type CallWithSession,
+  type AttributionItem,
+  type OtlpPayload,
+} from './otlp.js'
+import type { SessionAttributionRecord } from '../yield.js'
 
 /**
  * Safety valve, not a routine cap — pushes now loop until all batches are
@@ -91,6 +100,23 @@ export function parseRetryAfterMs(value: string | null): number | null {
  * retry on the next push.
  */
 export async function sendBatches(opts: SendBatchesOptions): Promise<PushResult> {
+  return sendBatchesCore({
+    ...opts,
+    buildPayload: buildOtlpPayload,
+    toOutbound: c => ({ key: c.call.deduplicationKey, ts: c.call.timestamp, costUSD: c.call.costUSD }),
+  })
+}
+
+/** How sendBatchesCore ledgers and prices a batch item. */
+type OutboundItem = { key: string; ts: string; costUSD: number }
+
+type SendBatchesCoreOptions<T> = Omit<SendBatchesOptions, 'batches'> & {
+  batches: T[][]
+  buildPayload: (batch: T[]) => OtlpPayload
+  toOutbound: (item: T) => OutboundItem
+}
+
+async function sendBatchesCore<T>(opts: SendBatchesCoreOptions<T>): Promise<PushResult> {
   assertHttps(opts.endpoint, 'Traces endpoint')
   const log = opts.log ?? (() => {})
   const sleep = opts.sleep ?? ((ms: number) => new Promise<void>(r => setTimeout(r, ms)))
@@ -107,7 +133,7 @@ export async function sendBatches(opts: SendBatchesOptions): Promise<PushResult>
 
     // Retry loop for the current batch (429 only)
     for (;;) {
-      const payload = buildOtlpPayload(batch)
+      const payload = opts.buildPayload(batch)
 
       const response = await fetch(opts.endpoint, {
         method: 'POST',
@@ -158,13 +184,11 @@ export async function sendBatches(opts: SendBatchesOptions): Promise<PushResult>
         totalRejected += rejected
         log(`  Batch: ${rejected}/${batch.length} spans rejected — whole batch will retry on next push`)
       } else {
-        const entries: LedgerEntry[] = batch.map(c => ({
-          key: c.call.deduplicationKey,
-          ts: c.call.timestamp,
-        }))
+        const outbound = batch.map(opts.toOutbound)
+        const entries: LedgerEntry[] = outbound.map(o => ({ key: o.key, ts: o.ts }))
         appendToLedger(entries)
         totalSent += batch.length
-        totalCostSent += batch.reduce((s, c) => s + c.call.costUSD, 0)
+        totalCostSent += outbound.reduce((s, o) => s + o.costUSD, 0)
       }
       break // batch done (success or partial) — move to next batch
     }
@@ -173,4 +197,56 @@ export async function sendBatches(opts: SendBatchesOptions): Promise<PushResult>
   return { outcome: 'complete', totalSent, totalRejected, totalCostSent, totalWaitMs }
 }
 
+/**
+ * Safety valve for attribution items, mirroring MAX_PER_PUSH: bounds a first
+ * `--since all --attribution` push over a long history. Remaining facts are
+ * sent on the next push (the ledger tracks progress).
+ */
+export const MAX_ATTRIBUTION_PER_PUSH = 10_000
+
+/** Flatten attribution records into items and filter out already-sent ones. */
+export function collectUnsentAttribution(records: SessionAttributionRecord[]): {
+  allItems: AttributionItem[]
+  unsent: AttributionItem[]
+} {
+  const sent = ledgerKeySet()
+
+  // Empty records (no commits, no PR links) exist only to RETRACT a session
+  // span whose commits migrated to another session. Send one only when a
+  // PRIOR state for that session was already ledgered — a session that was
+  // never sent has nothing to retract.
+  const sessionsWithPriorState = new Set<string>()
+  for (const key of sent) {
+    if (key.startsWith('attr:s:')) {
+      const sessionId = key.slice('attr:s:'.length, key.lastIndexOf(':'))
+      sessionsWithPriorState.add(sessionId)
+    }
+  }
+  const sendable = records.filter(r =>
+    r.commits.length > 0 || r.prLinks.length > 0 || sessionsWithPriorState.has(r.sessionId),
+  )
+
+  const allItems = flattenAttributionRecords(sendable)
+  const unsent = allItems.filter(i => !sent.has(i.dedupKey))
+  return { allItems, unsent }
+}
+
+export interface SendAttributionBatchesOptions extends Omit<SendBatchesOptions, 'batches'> {
+  batches: AttributionItem[][]
+}
+
+/**
+ * Send attribution batches through the same retry/ledger pipeline as usage
+ * batches. Items are ledgered by their state-encoding dedup keys, so an
+ * identical attribution fact is sent once and a state transition (commit
+ * merged to main, commit reverted) re-sends the updated fact.
+ */
+export async function sendAttributionBatches(opts: SendAttributionBatchesOptions): Promise<PushResult> {
+  return sendBatchesCore({
+    ...opts,
+    buildPayload: buildAttributionOtlpPayload,
+    toOutbound: item => ({ key: item.dedupKey, ts: item.timestamp, costUSD: 0 }),
+  })
+}
+
 export { batchCalls }

src/types.ts

@@ -153,6 +153,9 @@ export type ParsedApiCall = {
   /// Count of this call's tool results flagged `is_error` (Claude tool_result
   /// blocks). Bash stderr alone is NOT counted (warnings go there). Omitted at 0.
   toolErrors?: number
+  activeDurationMs?: number
+  activeGeneratedTokens?: number
+  toolWaitMs?: number
 }
 
 export type ToolCall = {
@@ -268,7 +271,7 @@ export type SessionSummary = {
   /// from a provider that never captures branches (→ contributes nothing).
   /// Claude only; absent otherwise.
   everHadBranch?: boolean
-  modelBreakdown: Record<string, { calls: number; costUSD: number; tokens: TokenUsage; savingsUSD: number; estimatedCostUSD?: number }>
+  modelBreakdown: Record<string, { calls: number; costUSD: number; tokens: TokenUsage; savingsUSD: number; estimatedCostUSD?: number; activeDurationMs?: number; activeGeneratedTokens?: number; toolWaitMs?: number }>
   toolBreakdown: Record<string, { calls: number }>
   mcpBreakdown: Record<string, { calls: number }>
   bashBreakdown: Record<string, { calls: number }>

src/usage-aggregator.ts

@@ -12,7 +12,7 @@ import { aggregateModels } from './models-report.js'
 import { scanUserCorrections, medianTimeToFirstEditMs, aggregateFileChurn, computePricingCoverage } from './workflow-insights.js'
 import { buildPrAttribution, aggregateByBranch } from './sessions-report.js'
 import { scanAndDetect } from './optimize.js'
-import { getDaysInRange, ensureCacheHydrated, emptyCache, BACKFILL_DAYS, toDateString, type DailyCache, type DailyEntry } from './daily-cache.js'
+import { getDaysInRange, ensureCacheHydrated, emptyCache, BACKFILL_DAYS, toDateString, type DailyCache, type DailyEntry, type ProjectDayStats, type ProviderDaySlice } from './daily-cache.js'
 import { buildGranularHistory } from './granular-history.js'
 
 // Row caps for the by-PR / by-branch payload aggregations, ranked by cost.
@@ -226,25 +226,130 @@ function sliceDayToProvider(day: DailyEntry, provider: string): DailyEntry {
   }
 }
 
+/// Does a cached day's project entry pass the active name filters? Mirrors
+/// parser.filterProjectsByName exactly — case-insensitive substring match
+/// against the project name OR its filesystem path, include first then exclude —
+/// so a filter selects the same projects whether it is resolved against a fresh
+/// parse or against the day cache. Patterns arrive pre-lowercased. `path` is
+/// absent on entries whose sessions were gone before it could be recorded; the
+/// name is then all there is to match on, as it is for the display layers.
+function dayProjectMatches(name: string, path: string | undefined, include: string[], exclude: string[]): boolean {
+  const n = name.toLowerCase()
+  const p = (path ?? '').toLowerCase()
+  const hit = (pattern: string): boolean => n.includes(pattern) || (p !== '' && p.includes(pattern))
+  if (include.length > 0 && !include.some(hit)) return false
+  if (exclude.length > 0 && exclude.some(hit)) return false
+  return true
+}
+
+/// Sum the per-project day stats that pass the filters. `defineProperty` so a
+/// project directory named "__proto__" stays an own key instead of mutating the
+/// prototype link (same reason day-aggregator does it when writing them).
+function sumMatchingProjects(
+  projects: Record<string, ProjectDayStats>,
+  include: string[],
+  exclude: string[],
+): { cost: number; calls: number; savingsUSD: number; sessions: number; projects: Record<string, ProjectDayStats>; matched: number } {
+  const out = { cost: 0, calls: 0, savingsUSD: 0, sessions: 0, projects: {} as Record<string, ProjectDayStats>, matched: 0 }
+  for (const [name, p] of Object.entries(projects)) {
+    if (!dayProjectMatches(name, p.path, include, exclude)) continue
+    out.cost += p.cost
+    out.calls += p.calls
+    out.savingsUSD += p.savingsUSD ?? 0
+    out.sessions += p.sessions ?? 0
+    out.matched += 1
+    Object.defineProperty(out.projects, name, { value: p, enumerable: true, writable: true, configurable: true })
+  }
+  return out
+}
+
+/// Collapse a day to the slice matching the active --project/--exclude filters,
+/// the project-level counterpart of sliceDayToProvider. Without this a
+/// project-filtered headline counted every historical day WHOLE — excluded
+/// projects included — while every detail panel (By Project / By Activity / By
+/// Model, all built from the name-filtered live parse) left them out, so the two
+/// could not be reconciled.
+///
+/// `DailyEntry.projects` (cache v15+) carries cost/calls/savingsUSD/sessions per
+/// project, so those four are recomputed EXACTLY. The day's tokens, models and
+/// categories have no per-project split to slice, so they are dropped here
+/// rather than reported as if they belonged to the surviving projects;
+/// buildDurablePeriod refills them from the project-filtered live parse, which
+/// is exact for every session that still exists.
+///
+/// A day recorded before v15 has no `projects` at all and nothing can
+/// reconstruct one once the sources are gone. Such a day cannot be attributed to
+/// any project, so it contributes nothing to a project-filtered total and its
+/// cost is surfaced as `unattributedCostUSD` instead of being silently folded in
+/// (understating with a stated figure beats overstating with excluded spend).
+function sliceDayToProject(day: DailyEntry, include: string[], exclude: string[]): DailyEntry {
+  const zeroDay = (): DailyEntry => ({
+    date: day.date, cost: 0, savingsUSD: 0, calls: 0, sessions: 0,
+    inputTokens: 0, outputTokens: 0, cacheReadTokens: 0, cacheWriteTokens: 0,
+    editTurns: 0, oneShotTurns: 0, models: {}, categories: {}, providers: {},
+    ...(day.carried ? { carried: true as const } : {}),
+  })
+  if (!day.projects) return zeroDay()
+  const totals = sumMatchingProjects(day.projects, include, exclude)
+  if (totals.matched === 0) return zeroDay()
+
+  // Provider slices carry their own per-project split, so `--provider X` on top
+  // of a project filter stays consistent with the day-level slice. A slice
+  // adopted from a pre-v15 cache has no split and is dropped for the same
+  // reason the day-level one is.
+  const providers: Record<string, ProviderDaySlice> = {}
+  for (const [name, slice] of Object.entries(day.providers)) {
+    if (!slice.projects) continue
+    const sliced = sumMatchingProjects(slice.projects, include, exclude)
+    if (sliced.matched === 0) continue
+    Object.defineProperty(providers, name, {
+      value: { cost: sliced.cost, calls: sliced.calls, savingsUSD: sliced.savingsUSD, sessions: sliced.sessions, projects: sliced.projects },
+      enumerable: true, writable: true, configurable: true,
+    })
+  }
+
+  return {
+    date: day.date,
+    cost: totals.cost,
+    savingsUSD: totals.savingsUSD,
+    calls: totals.calls,
+    sessions: totals.sessions,
+    inputTokens: 0, outputTokens: 0, cacheReadTokens: 0, cacheWriteTokens: 0,
+    editTurns: 0, oneShotTurns: 0, models: {}, categories: {},
+    providers,
+    projects: totals.projects,
+    ...(day.carried ? { carried: true as const } : {}),
+  }
+}
+
 /// The durable day set behind a period's headline: historical days from the
 /// carry-forward cache (up to yesterday, INCLUDING days whose session files have
 /// expired) unioned with today parsed live, then narrowed to the requested range
 /// and (when given) the heatmap day selection. Identical construction to the
 /// menubar's all-provider headline — this IS that construction, extracted.
+///
+/// `sliceHistorical` narrows the cache-sourced days only. Today's days come from
+/// a parse the caller already name-filtered, so re-slicing them would be a no-op
+/// at best and could only lose data the filter meant to keep.
 function unionDaysForPeriod(
   cache: DailyCache,
   todayAllDays: DailyEntry[],
   periodInfo: PeriodInfo,
   daysSelection: Set<string> | null,
+  sliceHistorical?: (day: DailyEntry) => DailyEntry,
 ): DailyEntry[] {
   const now = new Date()
   const yesterdayStr = toDateString(new Date(now.getFullYear(), now.getMonth(), now.getDate() - 1))
   const rangeStartStr = toDateString(periodInfo.range.start)
   const rangeEndStr = toDateString(periodInfo.range.end)
   const historicalRangeEndStr = rangeEndStr < yesterdayStr ? rangeEndStr : yesterdayStr
-  const historicalDays = rangeStartStr <= historicalRangeEndStr
+  const cacheDays = rangeStartStr <= historicalRangeEndStr
     ? getDaysInRange(cache, rangeStartStr, historicalRangeEndStr)
     : []
+  // Apply the day selection BEFORE slicing so a day the heatmap filtered out
+  // never reaches the slicer (which tallies what it could not attribute).
+  const selectedCacheDays = daysSelection ? cacheDays.filter(d => daysSelection.has(d.date)) : cacheDays
+  const historicalDays = sliceHistorical ? selectedCacheDays.map(d => sliceHistorical(d)) : selectedCacheDays
   const todayInRange = todayAllDays.filter(d => d.date >= rangeStartStr && d.date <= rangeEndStr)
   const unfiltered = [...historicalDays, ...todayInRange].sort((a, b) => a.date.localeCompare(b.date))
   return daysSelection ? unfiltered.filter(d => daysSelection.has(d.date)) : unfiltered
@@ -266,6 +371,12 @@ export type DurablePeriod = {
   days: DailyEntry[]
   /// Sum of `cost` on `carried` days included in the period (footnote source).
   carriedCostUSD: number
+  /// Cost the active --project/--exclude filter had to set aside: cached days
+  /// recorded before per-project day stats existed (v15) carry no project split,
+  /// so they cannot be attributed to the filtered projects. Always 0 when no
+  /// project filter is active. Reported so a filtered total that is short of the
+  /// unfiltered one says so instead of just looking wrong.
+  unattributedCostUSD: number
   /// Fresh per-period parse (provider + name filtered) for detail views that
   /// still need surviving session files.
   liveProjects: ProjectSummary[]
@@ -325,7 +436,33 @@ export async function buildDurablePeriod(periodInfo: PeriodInfo, opts: Aggregate
     scanRange = isTodayOnly ? todayRange : periodInfo.range
   }
 
-  const allDays = unionDaysForPeriod(cache, todayAllDays, periodInfo, daysSelection?.days ?? null)
+  // Name filters must reach the cache-sourced days too. Today's parse is already
+  // name-filtered above (`fp`), but the historical remainder comes straight out
+  // of the day cache, so without this slice a --project/--exclude headline
+  // counted every expired-source day whole while the detail panels did not.
+  const projectInclude = (opts.project ?? []).map(s => s.toLowerCase())
+  const projectExclude = (opts.exclude ?? []).map(s => s.toLowerCase())
+  const hasProjectFilter = projectInclude.length > 0 || projectExclude.length > 0
+  // What a filtered total cannot claim, and therefore has to leave out: a cached
+  // day with no project split at all, or — with a provider filter also active,
+  // since the headline then reads that provider's slice — a slice carried from a
+  // cache generation that predates per-project splits. Both are stated back to
+  // the caller (footnoted by the overview) instead of vanishing from the total.
+  const unattributableCost = (day: DailyEntry): number => {
+    if (pf === 'all') return day.projects ? 0 : day.cost
+    const slice = Object.hasOwn(day.providers, pf) ? day.providers[pf] : undefined
+    if (!slice) return 0
+    return !day.projects || !slice.projects ? slice.cost : 0
+  }
+  let unattributedCostUSD = 0
+  const sliceHistorical = hasProjectFilter
+    ? (day: DailyEntry): DailyEntry => {
+        unattributedCostUSD += unattributableCost(day)
+        return sliceDayToProject(day, projectInclude, projectExclude)
+      }
+    : undefined
+
+  const allDays = unionDaysForPeriod(cache, todayAllDays, periodInfo, daysSelection?.days ?? null, sliceHistorical)
   const days = pf === 'all' ? allDays : allDays.map(d => sliceDayToProvider(d, pf))
   const data = buildPeriodDataFromDays(days, periodInfo.label)
 
@@ -342,6 +479,21 @@ export async function buildDurablePeriod(periodInfo: PeriodInfo, opts: Aggregate
   // Cache buckets a session on its START day, the scan on any ACTIVE day; both
   // are lower bounds of distinct sessions, so max is the tightest safe bound.
   data.sessions = Math.max(data.sessions, scanData.sessions)
+  // Tokens/models/categories have no per-project split in the day cache, so
+  // sliceDayToProject drops them (see there). Under a project filter they come
+  // from the live parse instead: exact for the filtered projects, bounded by
+  // source retention like every other scan-derived field above, and consistent
+  // with the By Model / By Activity panels that read the same parse. Cost, calls,
+  // sessions and savings stay durable — sliced out of the cache, expired days
+  // included.
+  if (hasProjectFilter) {
+    data.inputTokens = scanData.inputTokens
+    data.outputTokens = scanData.outputTokens
+    data.cacheReadTokens = scanData.cacheReadTokens
+    data.cacheWriteTokens = scanData.cacheWriteTokens
+    data.models = scanData.models
+    data.categories = scanData.categories
+  }
   const estimatedByModel = new Map(
     scanData.models.filter(m => m.estimatedCostUSD != null).map(m => [m.name, m.estimatedCostUSD!]),
   )
@@ -352,7 +504,7 @@ export async function buildDurablePeriod(periodInfo: PeriodInfo, opts: Aggregate
   }
 
   const carriedCostUSD = days.reduce((s, d) => s + (d.carried ? d.cost : 0), 0)
-  return { data, days, carriedCostUSD, liveProjects, cache, todayAllDays, scanRange }
+  return { data, days, carriedCostUSD, unattributedCostUSD, liveProjects, cache, todayAllDays, scanRange }
 }
 
 /**

src/yield.ts

@@ -2,7 +2,7 @@ import { execFileSync } from 'child_process'
 import { realpathSync } from 'fs'
 import { resolve } from 'path'
 import { parseAllSessions } from './parser.js'
-import type { DateRange, SessionSummary } from './types.js'
+import type { DateRange, ProjectSummary, SessionSummary } from './types.js'
 
 export type YieldCategory = 'productive' | 'reverted' | 'abandoned' | 'ambiguous'
 
@@ -133,7 +133,98 @@ function getMainBranch(cwd: string): string {
   return 'main'
 }
 
-type CommitInfo = {
+/**
+ * Normalize a git remote URL to a host-scoped repo identity (`host/org/repo`)
+ * usable as a server-side join key. Handles the three common transports:
+ *
+ *   git@github.com:org/repo.git         -> github.com/org/repo
+ *   ssh://git@github.com:22/org/repo.git -> github.com/org/repo
+ *   https://user:tok@github.com/org/repo.git -> github.com/org/repo
+ *
+ * Credentials and ports are stripped (a token embedded in an https remote must
+ * never leave the machine), the host is lowercased (path case is preserved),
+ * and a trailing `.git` / `/` is removed. Local paths and `file://` remotes
+ * return null — a repo with no network remote has no server-side identity.
+ */
+/** Max length of an emitted repo identity (`host/org/repo`). */
+const MAX_REPO_IDENTITY_LENGTH = 200
+
+/**
+ * Positive validation (allow-list) of a composed repo identity — the final
+ * gate EVERY branch passes through before anything is returned. The host must
+ * look like a hostname and every path segment like a repo path segment, so no
+ * upstream parsing quirk (transport-helper remotes like `ext::…` or
+ * `codecommit::…`, credentials that survived a malformed URL, oversized
+ * strings) can reach the wire. Rejecting is always safe: an unrecognizable
+ * remote simply has no server-side identity.
+ */
+function isValidRepoIdentity(host: string, segments: string[]): boolean {
+  if (!/^[a-z0-9]([a-z0-9.-]*[a-z0-9])?$/.test(host)) return false
+  if (segments.length === 0) return false
+  return segments.every(s => /^[A-Za-z0-9._~-]+$/.test(s))
+}
+
+export function normalizeRemoteUrl(url: string): string | null {
+  const trimmed = url.trim()
+  if (!trimmed) return null
+
+  // Windows drive-letter paths (`C:\Users\...`, `C:/Users/...`) are local
+  // filesystem paths, not scp-like remotes — without this check the scp-like
+  // branch would parse `C:` as a host and emit the user's local path as a
+  // repo identity.
+  if (/^[a-zA-Z]:[\\/]/.test(trimmed)) return null
+
+  let host: string
+  let path: string
+
+  if (/^[a-zA-Z][a-zA-Z0-9+.-]*:\/\//.test(trimmed)) {
+    let parsed: URL
+    try {
+      parsed = new URL(trimmed)
+    } catch {
+      return null
+    }
+    if (parsed.protocol === 'file:') return null
+    if (!parsed.hostname) return null
+    host = parsed.hostname
+    path = parsed.pathname
+  } else {
+    // scp-like syntax: [user@]host:path. Credentials (userinfo) are split off
+    // at the FIRST `@` BEFORE any host matching — expressing userinfo as an
+    // optional regex group lets backtracking abandon the group and re-parse a
+    // credential prefix as `host:path`, dumping the token into the path
+    // (e.g. `x-access-token:ghp_…@github.com/org/repo`). Host must be at
+    // least 2 chars: a single-character "host" is a Windows drive-relative
+    // path (`C:repo`), never a real remote host.
+    const at = trimmed.indexOf('@')
+    const rest = at >= 0 ? trimmed.slice(at + 1) : trimmed
+    const scpLike = /^([^:/\\]{2,}):(?!\/\/)(.+)$/.exec(rest)
+    if (!scpLike) return null
+    host = scpLike[1]
+    path = scpLike[2]
+  }
+
+  const cleanPath = path
+    .replace(/\/+/g, '/')      // collapse doubled slashes → one join key, not two
+    .replace(/^\/+/, '')
+    .replace(/\/+$/, '')
+    .replace(/\.git$/i, '')    // case-insensitive: Repo.GIT joins with repo.git
+  if (!cleanPath) return null
+
+  const identity = `${host.toLowerCase()}/${cleanPath}`
+  if (identity.length > MAX_REPO_IDENTITY_LENGTH) return null
+  if (!isValidRepoIdentity(host.toLowerCase(), cleanPath.split('/'))) return null
+
+  return identity
+}
+
+/** `git remote get-url origin`, normalized. Null when absent or local-only. */
+function getRepoRemote(gitDir: string): string | null {
+  const url = runGit(['remote', 'get-url', 'origin'], gitDir)
+  return url ? normalizeRemoteUrl(url) : null
+}
+
+export type CommitInfo = {
   sha: string
   timestamp: Date
   inMain: boolean
@@ -296,34 +387,39 @@ function categorizeSession(
   return { category: 'abandoned', commitCount: commits.length }
 }
 
-export async function computeYield(range: DateRange, cwd: string, provider: string = 'all'): Promise<YieldSummary> {
-  const projects = await parseAllSessions(range, provider)
-
-  const summary: YieldSummary = {
-    productive: { cost: 0, sessions: 0 },
-    reverted: { cost: 0, sessions: 0 },
-    abandoned: { cost: 0, sessions: 0 },
-    ambiguous: { cost: 0, sessions: 0 },
-    total: { cost: 0, sessions: 0 },
-    details: [],
-  }
+type RepoGroup = {
+  commits: CommitInfo[]
+  sessions: SessionSummary[]
+  projectNames: string[]
+  /** Parallel to `sessions`: true when the session's identity came from its
+   * OWN project path; false when it inherited the cwd-fallback identity.
+   * The attribution (sync) path must never egress fallback-derived repos. */
+  ownIdentity: boolean[]
+  /** A directory to run further git queries in (remote lookup); null when the group has no git identity. */
+  gitDir: string | null
+}
 
+/**
+ * Group sessions by canonical repository identity and load each group's
+ * commits for the range. Shared by `computeYield` (categorization) and
+ * `computeAttributionRecords` (sync). Grouping semantics are unchanged from
+ * the original computeYield implementation: each commit is awarded at most
+ * once across the whole repo; monorepo subdirectories and worktrees collapse
+ * to one group; a project whose path is missing or not a git repo falls back
+ * to the cwd repo (or an empty commit list when cwd is not a repo either).
+ */
+function buildRepoGroups(
+  projects: ProjectSummary[],
+  range: DateRange,
+  cwd: string,
+): Map<string, RepoGroup> {
   const repoIdentityCache = new Map<string, RepoIdentity | null>()
 
-  // Get all commits in the date range for correlation
   const cwdIdentity = resolveRepoIdentity(cwd, repoIdentityCache)
   const cwdCommits = cwdIdentity
     ? getCommitsInRange(cwd, range.start, range.end, getMainBranch(cwd))
     : []
 
-  // Group sessions by canonical repository identity before attributing so that
-  // each commit is awarded at most once across the whole repo. Two monorepo
-  // subdirectory sessions, or two worktrees of one repo, resolve to the same
-  // git-common-dir and share ONE group; keying on the raw path would double
-  // count. A project whose path is missing or not a git repo falls back to the
-  // cwd repo (or, when cwd is not a repo either, an empty commit list) exactly
-  // as before.
-  type RepoGroup = { commits: CommitInfo[]; sessions: SessionSummary[]; projectNames: string[] }
   const repoGroups = new Map<string, RepoGroup>()
   for (const project of projects) {
     const projectIdentity = project.projectPath
@@ -342,15 +438,35 @@ export async function computeYield(range: DateRange, cwd: string, provider: stri
             : getCommitsInRange(identity.gitDir, range.start, range.end, getMainBranch(identity.gitDir)),
         sessions: [],
         projectNames: [],
+        ownIdentity: [],
+        gitDir: identity?.gitDir ?? null,
       }
       repoGroups.set(groupKey, group)
     }
     for (const session of project.sessions) {
       group.sessions.push(session)
       group.projectNames.push(project.project)
+      group.ownIdentity.push(projectIdentity !== null)
     }
   }
 
+  return repoGroups
+}
+
+export async function computeYield(range: DateRange, cwd: string, provider: string = 'all'): Promise<YieldSummary> {
+  const projects = await parseAllSessions(range, provider)
+
+  const summary: YieldSummary = {
+    productive: { cost: 0, sessions: 0 },
+    reverted: { cost: 0, sessions: 0 },
+    abandoned: { cost: 0, sessions: 0 },
+    ambiguous: { cost: 0, sessions: 0 },
+    total: { cost: 0, sessions: 0 },
+    details: [],
+  }
+
+  const repoGroups = buildRepoGroups(projects, range, cwd)
+
   for (const group of repoGroups.values()) {
     const attributions = attributeCommits(group.sessions, group.commits)
     for (const [index, session] of group.sessions.entries()) {
@@ -446,3 +562,160 @@ export function buildYieldJsonReport(
     })),
   }
 }
+
+// --- Sync attribution (codeburn sync push --attribution) ---
+
+export type CommitAttribution = {
+  sha: string
+  /** Commit author time, ISO 8601. */
+  timestamp: string
+  inMain: boolean
+  wasReverted: boolean
+}
+
+/**
+ * Per-session git attribution record — the sync-facing projection of the
+ * yield timestamp-window correlation. One record per session that produced
+ * server-joinable evidence: attributed commits (requires a normalized remote)
+ * and/or PR links.
+ */
+export type SessionAttributionRecord = {
+  sessionId: string
+  project: string
+  /** Normalized origin remote (`host/org/repo`), the server-side join key. Null when only prLinks are available. */
+  repo: string | null
+  /** GitHub PR URLs captured for the session (already normalized upstream). */
+  prLinks: string[]
+  /** Commits attributed to this session. Empty when repo is null (SHAs without a repo identity cannot be joined). */
+  commits: CommitAttribution[]
+  /** Session window, ISO 8601 — lets the receiver reason about attribution recency. */
+  firstTimestamp: string
+  lastTimestamp: string
+}
+
+/** Max PR links retained per session attribution record. */
+export const MAX_PR_LINKS_PER_SESSION = 20
+
+/**
+ * Shape-check PR links before they leave the machine. Upstream parsers only
+ * verify truthiness, so arbitrary strings can land in `session.prLinks`.
+ * Keep only https URLs shaped like a PR (`/org/repo/pull/N` — GitHub and
+ * GitHub Enterprise), bounded in length, capped per session, sorted.
+ *
+ * Links are REBUILT from `origin + pathname`, never passed through verbatim:
+ * userinfo (`https://alice:token@…`), query strings (copy-pasted GitHub
+ * links routinely carry `?notification_referrer_id=…`), and fragments are
+ * all dropped. Rebuilt links that collapse to the same URL dedupe.
+ */
+export function sanitizePrLinks(links: string[]): string[] {
+  const valid = new Set<string>()
+  for (const link of links) {
+    if (typeof link !== 'string' || link.length === 0 || link.length > 512) continue
+    let url: URL
+    try {
+      url = new URL(link)
+    } catch {
+      continue
+    }
+    if (url.protocol !== 'https:') continue
+    if (!/^\/[^/]+\/[^/]+\/pull\/\d+$/.test(url.pathname)) continue
+    const rebuilt = `${url.origin}${url.pathname}`
+    if (rebuilt.length > 256) continue
+    valid.add(rebuilt)
+  }
+  return [...valid].sort().slice(0, MAX_PR_LINKS_PER_SESSION)
+}
+
+/**
+ * Compute per-session attribution records for sync. Reuses the exact yield
+ * repo grouping + tightest-window commit attribution (`methodology:
+ * timestamp-window`), then joins in each repo group's normalized origin
+ * remote and the session's sanitized PR links.
+ *
+ * Inclusion rules:
+ * - Only sessions whose OWN project path resolved to a repo participate in
+ *   commit attribution; cwd-fallback sessions never carry a repo or commits
+ *   (privacy gate — see below) but still emit a record when they have PR links.
+ * - Commits require a normalized remote; a SHA without a repo identity has
+ *   no server-side meaning.
+ * - A session with no commits and no PR links is emitted ONLY when it lost a
+ *   commit to a tighter-window session in THIS computation (`lostCandidacy`)
+ *   — a retraction candidate. A session that merely aged its commits out of
+ *   the range lost them to nobody, and emitting an empty record for it would
+ *   permanently retract a still-correct server-side count.
+ *
+ * Takes already-parsed projects (sync push has them in hand) instead of
+ * re-parsing like computeYield does.
+ */
+export function computeAttributionRecords(
+  projects: ProjectSummary[],
+  range: DateRange,
+  cwd: string,
+): SessionAttributionRecord[] {
+  const repoGroups = buildRepoGroups(projects, range, cwd)
+  const records: SessionAttributionRecord[] = []
+
+  for (const group of repoGroups.values()) {
+    const remote = group.gitDir ? getRepoRemote(group.gitDir) : null
+
+    // Privacy gate: only sessions whose identity came from their OWN project
+    // path participate in commit attribution. A session whose project path no
+    // longer resolves (deleted/renamed dir, non-repo session) inherits the
+    // cwd-fallback identity in buildRepoGroups — attributing it here would
+    // egress whatever repo the user happens to be pushing from, with commits
+    // that session never touched. Fallback sessions get no repo and no
+    // commits; they still emit a record when they carry PR links (which are
+    // session-native and safe). Excluding them from the competition also
+    // prevents a fallback window from stealing a commit that belongs to a
+    // genuine session.
+    const ownSessions = group.sessions.filter((_, i) => group.ownIdentity[i])
+    const attributions = attributeCommits(ownSessions, group.commits)
+    // Keyed by object reference: session objects are unique per group entry,
+    // whereas sessionId strings could collide across projects.
+    const attributionBySession = new Map<SessionSummary, CommitInfo[]>()
+    const lostCandidacyBySession = new Map<SessionSummary, boolean>()
+    for (const [i, session] of ownSessions.entries()) {
+      attributionBySession.set(session, attributions[i]?.commits ?? [])
+      lostCandidacyBySession.set(session, attributions[i]?.lostCandidacy ?? false)
+    }
+
+    for (const [index, session] of group.sessions.entries()) {
+      if (!session.firstTimestamp) continue
+
+      const isOwn = group.ownIdentity[index] === true
+      const sessionRemote = isOwn ? remote : null
+      const attributedCommits = sessionRemote
+        ? (attributionBySession.get(session) ?? [])
+        : []
+      const prLinks = sanitizePrLinks(session.prLinks ?? [])
+      // Empty sessions are retraction candidates ONLY when they lost a commit
+      // to a tighter-window session in THIS run: that commit's server-side
+      // attribution is migrating, so the loser must re-emit commit_count=0.
+      // An empty session whose commits merely aged out of the --since range
+      // (rolling window, or a narrower window than a previous push) lost them
+      // to NOBODY — emitting a retraction for it would permanently zero a
+      // still-correct server-side count, because the original state key stays
+      // ledgered and is never re-sent.
+      const lostToTighterSession = sessionRemote !== null &&
+        (lostCandidacyBySession.get(session) ?? false)
+      if (attributedCommits.length === 0 && prLinks.length === 0 && !lostToTighterSession) continue
+
+      records.push({
+        sessionId: session.sessionId,
+        project: group.projectNames[index] ?? session.project,
+        repo: sessionRemote,
+        prLinks,
+        commits: attributedCommits.map(c => ({
+          sha: c.sha,
+          timestamp: c.timestamp.toISOString(),
+          inMain: c.inMain,
+          wasReverted: c.wasReverted,
+        })),
+        firstTimestamp: session.firstTimestamp,
+        lastTimestamp: session.lastTimestamp ?? session.firstTimestamp,
+      })
+    }
+  }
+
+  return records
+}

tests/cache-refresh-lock-corrupt-body.test.ts

@@ -0,0 +1,121 @@
+import { spawn, type ChildProcess } from 'child_process'
+import { existsSync } from 'fs'
+import { mkdir, mkdtemp, readFile, rm, stat, writeFile } from 'fs/promises'
+import { tmpdir } from 'os'
+import { join } from 'path'
+import { afterEach, describe, expect, it } from 'vitest'
+
+import { acquireCacheRefreshLock } from '../src/cache-refresh-lock.js'
+
+// Recovering a corrupt session-refresh.lock must never cost the two design
+// commitments the lock exists for: it may not fail open into mutation, and it
+// may not be stolen from a live heartbeating owner. An earlier fix waived the
+// staleness gate for a corrupt body once the contender's wait expired, which
+// handed two processes the lock at the same time in both directions below.
+// Corruption is recovered only through the unmodified staleness gate.
+
+const roots: string[] = []
+afterEach(async () => {
+  while (roots.length) await rm(roots.pop()!, { recursive: true, force: true })
+})
+
+async function tempCase(prefix: string): Promise<{ cacheDir: string; barriers: string; lockPath: string }> {
+  const root = await mkdtemp(join(tmpdir(), prefix))
+  roots.push(root)
+  const cacheDir = join(root, 'cache')
+  const barriers = join(root, 'barriers')
+  await mkdir(cacheDir, { recursive: true })
+  await mkdir(barriers, { recursive: true })
+  return { cacheDir, barriers, lockPath: join(cacheDir, 'session-refresh.lock') }
+}
+
+function spawnFixture(fixture: string, args: string[], env: NodeJS.ProcessEnv = {}): ChildProcess {
+  return spawn(process.execPath, ['--import', 'tsx', join(process.cwd(), 'tests/fixtures', fixture), ...args], {
+    cwd: process.cwd(),
+    stdio: ['ignore', 'ignore', 'inherit'],
+    env: { ...process.env, ...env },
+  })
+}
+
+async function waitForFile(path: string, timeoutMs = 15_000): Promise<void> {
+  const deadline = Date.now() + timeoutMs
+  while (!existsSync(path)) {
+    if (Date.now() > deadline) throw new Error(`timed out waiting for ${path}`)
+    await new Promise(resolve => { setTimeout(resolve, 5) })
+  }
+}
+
+const exited = (child: ChildProcess): Promise<unknown> => new Promise(resolve => child.once('exit', resolve))
+
+describe('warm refresh lock: a corrupt body never displaces a live owner', () => {
+  it('leaves the zero-byte lock alone while its creator is still inside createExclusive', async () => {
+    const { cacheDir, barriers, lockPath } = await tempCase('cb-refresh-corrupt-race-')
+    // UV_THREADPOOL_SIZE=1 plus the fixture's pbkdf2 churn stretches the gap
+    // between open(path,'wx') and the awaited body write, so the lock is
+    // genuinely observable at zero bytes with no external corruption at all.
+    const owner = spawnFixture('cache-refresh-slow-owner.ts', [cacheDir, barriers], { UV_THREADPOOL_SIZE: '1' })
+    try {
+      const deadline = Date.now() + 20_000
+      let sawZeroByteLock = false
+      while (Date.now() < deadline) {
+        const info = await stat(lockPath).catch(() => null)
+        if (info) { sawZeroByteLock = info.size === 0; break }
+        await new Promise(resolve => { setTimeout(resolve, 1) })
+      }
+      expect(sawZeroByteLock, 'never caught the owner mid-createExclusive').toBe(true)
+
+      const contender = await acquireCacheRefreshLock({ cacheDir, waitMs: 40, pollMs: 5, staleMs: 90_000 })
+      if (contender.outcome === 'acquired') await contender.handle.release()
+      expect(contender.outcome).toBe('timed-out')
+    } finally {
+      await exited(owner)
+    }
+    // The owner kept the lock end to end, so its publication fence held.
+    expect(existsSync(join(barriers, 'owner.acquired'))).toBe(true)
+    expect(existsSync(join(barriers, 'owner.verify.true')), 'owner lost its own lock').toBe(true)
+  }, 60_000)
+
+  it('leaves a live owner alone after its body is truncated, however long the wait', async () => {
+    const { cacheDir, barriers, lockPath } = await tempCase('cb-refresh-corrupt-live-')
+    const owner = spawnFixture('cache-refresh-corrupt-owner.ts', [cacheDir, barriers, '4000', '100'])
+    try {
+      await waitForFile(join(barriers, 'owner.acquired'))
+      const ownerToken = await readFile(join(barriers, 'owner.acquired'), 'utf-8')
+
+      // The state a heartbeat leaves when writeFile() truncates and then fails
+      // (ENOSPC/EIO, swallowed by the heartbeat's own catch). No guard is held,
+      // and the body carries no token to compare against.
+      await writeFile(lockPath, '')
+      // This wait is shorter than one heartbeat period, so the body is still
+      // truncated throughout: the contender has nothing but the fresh mtime to
+      // go on, and that alone must keep it out.
+      const early = await acquireCacheRefreshLock({ cacheDir, waitMs: 80, pollMs: 5, staleMs: 90_000 })
+      if (early.outcome === 'acquired') await early.handle.release()
+      expect(early.outcome).toBe('timed-out')
+
+      // Past the age gate, the successor SHOULD win. Only the heartbeat
+      // advances mtime and it refuses to rewrite a body it cannot prove is
+      // ours, so a corrupt body freezes its own mtime and ages out. That is the
+      // intended end state, not a displacement to be prevented: an owner that
+      // cannot prove ownership must not publish, and the alternative — letting
+      // the heartbeat restamp its token over an unparseable body — resurrected
+      // legitimately-replaced writers and let release() delete a live
+      // successor's lock.
+      await writeFile(lockPath, '')
+      const late = await acquireCacheRefreshLock({ cacheDir, waitMs: 2_400, pollMs: 10, staleMs: 400 })
+      expect(late.outcome).toBe('acquired')
+      if (late.outcome === 'acquired') {
+        // The successor owns it outright: the body carries its token, not the
+        // original owner's.
+        expect(JSON.parse(await readFile(lockPath, 'utf-8')).token).not.toBe(ownerToken)
+        await late.handle.release()
+      }
+    } finally {
+      await exited(owner)
+    }
+    // The displaced owner's fence must refuse. Discarding its parse is the
+    // fail-safe direction; two writers believing they own the lock is not.
+    expect(existsSync(join(barriers, 'owner.verify.false')), 'displaced owner still passed its fence').toBe(true)
+    expect(existsSync(join(barriers, 'owner.verify.true'))).toBe(false)
+  }, 30_000)
+})

tests/cache-refresh-lock-process.test.ts

@@ -85,6 +85,41 @@ describe('warm refresh child-process regression', () => {
     await expect(stat(join(cacheDir, 'session-refresh.lock.takeover'))).rejects.toMatchObject({ code: 'ENOENT' })
   })
 
+  it('gives exactly one contender ownership of a stale zero-byte lock', async () => {
+    const root = await mkdtemp(join(tmpdir(), 'cb-refresh-corrupt-'))
+    roots.push(root)
+    const cacheDir = join(root, 'cache')
+    const barriers = join(root, 'barriers')
+    await mkdir(cacheDir, { recursive: true })
+    await mkdir(barriers, { recursive: true })
+    process.env['CODEBURN_CACHE_DIR'] = cacheDir
+    const initial = emptyCache()
+    initial.complete = true
+    await saveCache(initial)
+    const corruptPath = join(cacheDir, 'session-refresh.lock')
+    await writeFile(corruptPath, '')
+    await utimes(corruptPath, new Date(1), new Date(1))
+    const source = join(root, 'changed.json')
+    await writeFile(source, JSON.stringify({ output: 404 }))
+
+    const a = worker(cacheDir, barriers, 'a', source)
+    const b = worker(cacheDir, barriers, 'b', source)
+    const winner = await Promise.race([
+      waitFor(join(barriers, 'a.parsed')).then(() => 'a'),
+      waitFor(join(barriers, 'b.parsed')).then(() => 'b'),
+    ])
+    const loser = winner === 'a' ? 'b' : 'a'
+    expect(Number(existsSync(join(barriers, 'a.parsed'))) + Number(existsSync(join(barriers, 'b.parsed')))).toBe(1)
+    const loserOutcome = await waitForAny(barriers, [
+      `${loser}.timed-out`, `${loser}.parsed`, `${loser}.completed-by-other`, `${loser}.unavailable`,
+    ])
+    expect(loserOutcome, (await readdir(barriers)).join(',')).toBe(`${loser}.timed-out`)
+    await writeFile(join(barriers, `${winner}.save`), '')
+    await Promise.all([waitForExit(a), waitForExit(b)])
+    await expect(stat(join(cacheDir, 'session-refresh.lock.takeover'))).rejects.toMatchObject({ code: 'ENOENT' })
+    expect(Object.keys((await loadCache()).providers['regression']?.files ?? {})).toEqual([source])
+  })
+
   it('serializes disjoint parsed updates so the later publication cannot drop the first', async () => {
     const root = await mkdtemp(join(tmpdir(), 'cb-refresh-process-'))
     roots.push(root)

tests/cache-refresh-lock.test.ts

@@ -1,5 +1,5 @@
 import { afterEach, describe, expect, it } from 'vitest'
-import { mkdir, mkdtemp, readFile, rm, stat, unlink, utimes, writeFile } from 'fs/promises'
+import { chmod, mkdir, mkdtemp, readFile, rm, stat, unlink, utimes, writeFile } from 'fs/promises'
 import { tmpdir } from 'os'
 import { join } from 'path'
 
@@ -7,6 +7,7 @@ import {
   acquireCacheRefreshLock,
   type RefreshLockClock,
 } from '../src/cache-refresh-lock.js'
+import { clearSessionCache, parseAllSessions } from '../src/parser.js'
 import { emptyCache, loadCache, saveCache, sessionCachePath } from '../src/session-cache.js'
 
 const dirs: string[] = []
@@ -223,3 +224,225 @@ describe('warm session-cache refresh lock', () => {
     await rm(dir, { recursive: true, force: true })
   })
 })
+
+// A lock body that never parses into a record is a corrupt leftover, not an
+// unusable filesystem: classifying it as 'unavailable' routed every subsequent
+// refresh to the read-only path and froze ingestion permanently.
+describe('warm session-cache refresh lock: corrupt lock recovery', () => {
+  it('takes over a stale zero-byte lock', async () => {
+    const dir = await tempDir()
+    const clock = fakeClock(100_000)
+    const path = lockPath(dir)
+    await writeFile(path, '')
+    const old = new Date(1)
+    await utimes(path, old, old)
+
+    const result = await acquireCacheRefreshLock({ cacheDir: dir, clock, staleMs: 90, waitMs: 100, pollMs: 1 })
+    expect(result.outcome).toBe('acquired')
+    if (result.outcome !== 'acquired') return
+    expect(JSON.parse(await readFile(path, 'utf-8')).token).toBe(result.handle.token)
+    await result.handle.release()
+    await expect(stat(join(dir, 'session-refresh.lock.takeover'))).rejects.toMatchObject({ code: 'ENOENT' })
+  })
+
+  it('takes over a stale malformed-JSON lock', async () => {
+    const dir = await tempDir()
+    const clock = fakeClock(100_000)
+    const path = lockPath(dir)
+    await writeFile(path, '{"pid":1,"token":')
+    const old = new Date(1)
+    await utimes(path, old, old)
+
+    const result = await acquireCacheRefreshLock({ cacheDir: dir, clock, staleMs: 90, waitMs: 100, pollMs: 1 })
+    expect(result.outcome).toBe('acquired')
+    if (result.outcome !== 'acquired') return
+    expect(JSON.parse(await readFile(path, 'utf-8')).token).toBe(result.handle.token)
+    await result.handle.release()
+  })
+
+  it('takes over a stale lock whose body parses but has the wrong shape', async () => {
+    const dir = await tempDir()
+    const clock = fakeClock(100_000)
+    const path = lockPath(dir)
+    await writeFile(path, JSON.stringify({ pid: 'one', token: 7 }))
+    const old = new Date(1)
+    await utimes(path, old, old)
+
+    const result = await acquireCacheRefreshLock({ cacheDir: dir, clock, staleMs: 90, waitMs: 100, pollMs: 1 })
+    expect(result.outcome).toBe('acquired')
+    if (result.outcome === 'acquired') await result.handle.release()
+  })
+
+  // Staleness is never waived for a corrupt body, so a FRESH one is waited out
+  // and left alone: it may belong to a live owner whose heartbeat is about to
+  // repair it. The resulting freeze is bounded by staleMs rather than
+  // permanent, which is the whole of the reported defect.
+  it('waits out a fresh malformed lock, then recovers it once it ages past staleMs', async () => {
+    const dir = await tempDir()
+    const clock = fakeClock(100_000)
+    const path = lockPath(dir)
+    await writeFile(path, '')
+    const now = new Date(clock.wallNow())
+    await utimes(path, now, now)
+
+    let polls = 0
+    const fresh = await acquireCacheRefreshLock({
+      cacheDir: dir,
+      clock,
+      staleMs: 90_000,
+      waitMs: 50,
+      pollMs: 10,
+      sleep: async ms => { polls++; clock.advance(ms) },
+    })
+    expect(polls).toBeGreaterThan(0)
+    expect(fresh).toEqual({ outcome: 'timed-out' })
+    expect(await readFile(path, 'utf-8')).toBe('')
+
+    // Nothing rewrote the body, so its mtime is still frozen. One stale window
+    // later the very next run recovers it through the unmodified age gate.
+    clock.advance(90_001)
+    const later = await acquireCacheRefreshLock({ cacheDir: dir, clock, staleMs: 90_000, waitMs: 50, pollMs: 10 })
+    expect(later.outcome).toBe('acquired')
+    if (later.outcome !== 'acquired') return
+    expect(JSON.parse(await readFile(path, 'utf-8')).token).toBe(later.handle.token)
+    await later.handle.release()
+  })
+
+  it('never steals a fresh malformed lock from an owner that repairs it mid-wait', async () => {
+    const dir = await tempDir()
+    const clock = fakeClock(100_000)
+    const path = lockPath(dir)
+    await writeFile(path, '')
+    const now = new Date(clock.wallNow())
+    await utimes(path, now, now)
+
+    let polls = 0
+    const result = await acquireCacheRefreshLock({
+      cacheDir: dir,
+      clock,
+      staleMs: 90_000,
+      waitMs: 50,
+      pollMs: 10,
+      sleep: async ms => {
+        if (++polls === 1) {
+          await writeFile(path, JSON.stringify({ pid: 1, token: 'holder', at: clock.wallNow() }))
+          const t = new Date(clock.wallNow())
+          await utimes(path, t, t)
+        }
+        clock.advance(ms)
+      },
+    })
+    expect(result).toEqual({ outcome: 'timed-out' })
+    expect(JSON.parse(await readFile(path, 'utf-8')).token).toBe('holder')
+  })
+
+  it('treats a body truncated mid-heartbeat as contention, not corruption', async () => {
+    const dir = await tempDir()
+    const path = lockPath(dir)
+    const record = (): string => JSON.stringify({ pid: 1, token: 'holder', at: Date.now() })
+    await writeFile(path, record())
+    // A real heartbeat rewrite exposes a zero-length body for an instant. The
+    // waiter must keep polling and leave the live owner alone.
+    const heartbeat = setInterval(() => {
+      void (async () => {
+        try {
+          await writeFile(path, '')
+          await writeFile(path, record())
+        } catch { /* the winner may have replaced the file */ }
+      })()
+    }, 1)
+    let result
+    try {
+      result = await acquireCacheRefreshLock({ cacheDir: dir, staleMs: 30, waitMs: 120, pollMs: 5 })
+    } finally {
+      clearInterval(heartbeat)
+    }
+    await new Promise(resolve => { setTimeout(resolve, 20) })
+    expect(result).toEqual({ outcome: 'timed-out' })
+    expect(JSON.parse(await readFile(path, 'utf-8')).token).toBe('holder')
+  })
+
+  // The sidecar is created by the same createExclusive as the lock, so it can be
+  // left 0-byte by exactly the same crash. Before observe() separated corrupt
+  // from unreadable this returned 'unavailable' from acquireTakeoverGuard and
+  // froze recovery even when the primary lock was perfectly fine.
+  it('reclaims a stale zero-byte takeover sidecar', async () => {
+    const dir = await tempDir()
+    const path = lockPath(dir)
+    const sidecar = join(dir, 'session-refresh.lock.takeover')
+    await writeFile(path, '')
+    await writeFile(sidecar, '')
+    const old = new Date(1)
+    await utimes(path, old, old)
+    await utimes(sidecar, old, old)
+
+    const result = await acquireCacheRefreshLock({ cacheDir: dir, staleMs: 90, waitMs: 200, pollMs: 5 })
+    expect(result.outcome).toBe('acquired')
+    if (result.outcome !== 'acquired') return
+    expect(JSON.parse(await readFile(path, 'utf-8')).token).toBe(result.handle.token)
+    await result.handle.release()
+    await expect(stat(sidecar)).rejects.toMatchObject({ code: 'ENOENT' })
+  })
+
+  it('still reports unavailable when the lock body cannot be read', async () => {
+    if (process.getuid?.() === 0) return
+    const dir = await tempDir()
+    const path = lockPath(dir)
+    await writeFile(path, '')
+    await chmod(path, 0o000)
+    const old = new Date(1)
+    await utimes(path, old, old)
+    try {
+      const result = await acquireCacheRefreshLock({ cacheDir: dir, staleMs: 1, waitMs: 50, pollMs: 5 })
+      expect(result).toEqual({ outcome: 'unavailable' })
+    } finally {
+      await chmod(path, 0o600)
+    }
+  })
+
+  it('resumes ingesting changed sources after a corrupt lock froze the refresh', async () => {
+    const root = await tempDir()
+    const cacheDir = join(root, 'cache')
+    const config = join(root, 'claude')
+    const projectDir = join(config, 'projects', 'frozen-proj')
+    await mkdir(cacheDir, { recursive: true })
+    await mkdir(projectDir, { recursive: true })
+    process.env['CODEBURN_CACHE_DIR'] = cacheDir
+    process.env['CLAUDE_CONFIG_DIR'] = config
+    process.env['CODEBURN_DESKTOP_SESSIONS_DIR'] = join(root, 'desktop-sessions')
+
+    const session = (id: string, ts: string): string => [
+      JSON.stringify({ type: 'user', sessionId: id, timestamp: ts, cwd: '/tmp/frozen-proj', message: { role: 'user', content: 'hi' } }),
+      JSON.stringify({
+        type: 'assistant', sessionId: id, timestamp: ts, cwd: '/tmp/frozen-proj',
+        message: { id: `msg-${id}`, type: 'message', role: 'assistant', model: 'claude-sonnet-4-5', content: [], usage: { input_tokens: 100, output_tokens: 20 } },
+      }),
+    ].join('\n') + '\n'
+
+    await writeFile(join(projectDir, 'sess-1.jsonl'), session('sess-1', '2026-05-01T10:00:00.000Z'))
+    clearSessionCache()
+    const warm = await parseAllSessions()
+    expect(warm[0]?.sessions.map(s => s.sessionId)).toEqual(['sess-1'])
+
+    // The field state: a 0-byte lock AND the takeover sidecar of the dead owner
+    // that was mid-recovery when it died, both older than the stale window.
+    // Nothing else on the machine ever repairs either file, so on every later
+    // run the lock read as 'unavailable', the parser fell back to a read-only
+    // re-parse, and sess-2 was never ingested.
+    const old = new Date(1)
+    for (const name of ['session-refresh.lock', 'session-refresh.lock.takeover']) {
+      await writeFile(join(cacheDir, name), name.endsWith('.takeover') ? JSON.stringify({ pid: 999_999, token: 'dead-owner', at: 1 }) : '')
+      await utimes(join(cacheDir, name), old, old)
+    }
+
+    await writeFile(join(projectDir, 'sess-2.jsonl'), session('sess-2', '2026-05-01T11:00:00.000Z'))
+    clearSessionCache()
+    const after = await parseAllSessions()
+    expect(after[0]?.sessions.map(s => s.sessionId).sort()).toEqual(['sess-1', 'sess-2'])
+    expect(Object.keys((await loadCache()).providers['claude']?.files ?? {}).length).toBe(2)
+
+    clearSessionCache()
+    delete process.env['CLAUDE_CONFIG_DIR']
+    delete process.env['CODEBURN_DESKTOP_SESSIONS_DIR']
+  })
+})

tests/cli-codex-tps.test.ts

@@ -0,0 +1,46 @@
+import { mkdtemp, rm } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { spawnSync } from 'node:child_process'
+import { afterEach, describe, expect, it } from 'vitest'
+
+const homes: string[] = []
+
+afterEach(async () => {
+  while (homes.length) await rm(homes.pop()!, { recursive: true, force: true })
+})
+
+function runCli(args: string[], home: string) {
+  return spawnSync(process.execPath, ['--import', 'tsx', 'src/cli.ts', ...args], {
+    cwd: process.cwd(),
+    env: { ...process.env, HOME: home, CODEX_HOME: join(home, '.codex'), TZ: 'UTC' },
+    encoding: 'utf-8',
+    timeout: 30_000,
+  })
+}
+
+describe('codex-tps CLI validation', () => {
+  it('rejects sub-second watch intervals', async () => {
+    const home = await mkdtemp(join(tmpdir(), 'codeburn-tps-cli-'))
+    homes.push(home)
+    const result = runCli(['codex-tps', '--watch', '0.1'], home)
+    expect(result.status).toBe(1)
+    expect(result.stderr).toContain('watch must be 0 or at least 1 second')
+  })
+
+  it('rejects JSON watch output instead of concatenating invalid JSON documents', async () => {
+    const home = await mkdtemp(join(tmpdir(), 'codeburn-tps-cli-'))
+    homes.push(home)
+    const result = runCli(['codex-tps', '--json', '--watch', '1'], home)
+    expect(result.status).toBe(2)
+    expect(result.stderr).toContain('--json cannot be combined with --watch')
+  })
+
+  it('returns a nonzero status for a missing explicit rollout', async () => {
+    const home = await mkdtemp(join(tmpdir(), 'codeburn-tps-cli-'))
+    homes.push(home)
+    const result = runCli(['codex-tps', join(home, 'missing.jsonl')], home)
+    expect(result.status).toBe(1)
+    expect(result.stderr).toContain('session file not found')
+  })
+})

tests/cli-durable-totals.test.ts

@@ -1,4 +1,4 @@
-import { afterEach, beforeAll, beforeEach, describe, expect, it } from 'vitest'
+import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from 'vitest'
 import { mkdir, rm, writeFile } from 'fs/promises'
 import { existsSync } from 'fs'
 import { tmpdir } from 'os'
@@ -13,7 +13,7 @@ import {
   buildPeriodData,
   getDailyCacheConfigHash,
 } from '../src/usage-aggregator.js'
-import { parseAllSessions, filterProjectsByName, clearSessionCache } from '../src/parser.js'
+import { parseAllSessions, filterProjectsByName, filterProjectsByDateRange, filterProjectsByDays, clearSessionCache } from '../src/parser.js'
 import { renderOverview } from '../src/overview.js'
 import type { DateRange } from '../src/types.js'
 
@@ -28,7 +28,7 @@ import type { DateRange } from '../src/types.js'
 // queries, and in the plain live regime with no carried days at all.
 
 const ROOT = join(tmpdir(), `codeburn-durable-totals-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`)
-const ENV_KEYS = ['HOME', 'CODEBURN_CACHE_DIR', 'CLAUDE_CONFIG_DIR', 'CLAUDE_CONFIG_DIRS', 'CODEX_HOME'] as const
+const ENV_KEYS = ['HOME', 'CODEBURN_CACHE_DIR', 'CLAUDE_CONFIG_DIR', 'CLAUDE_CONFIG_DIRS', 'CODEX_HOME', 'USERPROFILE', 'KIMI_CODE_HOME', 'CODEBURN_DESKTOP_SESSIONS_DIR'] as const
 let savedEnv: Record<string, string | undefined>
 
 const CARRIED_COST = 100
@@ -120,11 +120,22 @@ beforeEach(async () => {
   savedEnv = Object.fromEntries(ENV_KEYS.map(k => [k, process.env[k]]))
   await mkdir(join(ROOT, 'home', '.claude'), { recursive: true })
   await mkdir(join(ROOT, 'cache'), { recursive: true })
+  await mkdir(join(ROOT, 'no-desktop-sessions'), { recursive: true })
+  await mkdir(join(ROOT, 'no-kimi-home'), { recursive: true })
   process.env['HOME'] = join(ROOT, 'home')
   process.env['CODEBURN_CACHE_DIR'] = join(ROOT, 'cache')
   process.env['CLAUDE_CONFIG_DIR'] = join(ROOT, 'home', '.claude')
   delete process.env['CLAUDE_CONFIG_DIRS']
   delete process.env['CODEX_HOME']
+  // Keep real provider data on the machine out of every parse: absolute-count
+  // assertions are meaningless when the host's own sessions leak in.
+  // USERPROFILE matters on Windows, where os.homedir() ignores HOME;
+  // KIMI_CODE_HOME / the desktop-sessions override redirect the two env-aware
+  // discovery roots. (The codex provider captures its home at import time, so
+  // it is redirected separately in vi.hoisted below.)
+  process.env['USERPROFILE'] = join(ROOT, 'home')
+  process.env['KIMI_CODE_HOME'] = join(ROOT, 'no-kimi-home')
+  process.env['CODEBURN_DESKTOP_SESSIONS_DIR'] = join(ROOT, 'no-desktop-sessions')
   clearSessionCache()
 })
 
@@ -259,3 +270,156 @@ describe('terminal overview carried-day footnote', () => {
     expect(noCarried).not.toContain('preserved from expired session logs')
   })
 })
+
+// Issue #852 review: per-call slicing is only conservation-correct when day
+// bucketing attributes call-derived values to each call's own day. These
+// tests pin the straddling-turn case the review reproduced end-to-end through
+// buildDurablePeriod: a turn starting the previous day at 23:57 with one call
+// before and one after local midnight must keep BOTH calls across a multi-day
+// period (cache ≤ yesterday + live today union), each on its own day.
+//
+// The codex provider captures CODEX_HOME when its module is first imported,
+// so the redirect must happen before module evaluation (vi.hoisted) rather
+// than in beforeEach. The captured dir is per-test-process and empty except
+// for the fixture written below, which also shields the suite from any real
+// ~/.codex on the machine running it.
+const CODEX_ROOT = vi.hoisted(() => {
+  const root = `${process.env['TMPDIR'] || '/tmp'}/codeburn-straddle-codex-${process.pid}-${Date.now()}`
+  process.env['CODEX_HOME'] = `${root}/codex`
+  return root
+})
+
+describe('midnight-straddling turn conservation (issue #852)', () => {
+  // Day N = 2026-07-27, day N+1 ("today") = 2026-07-28 — LOCAL dates built
+  // from constructor args so the case is machine-TZ independent (dateKey /
+  // toDateString use the same local getters).
+  const NOW = new Date(2026, 6, 28, 12, 0, 0)
+  const DAY_N = '2026-07-27'
+  const DAY_N1 = '2026-07-28'
+
+  function fakeNow(): void {
+    // Date only: the daily-cache lock and retry helpers must keep real timers.
+    vi.useFakeTimers({ toFake: ['Date'] })
+    vi.setSystemTime(NOW)
+  }
+
+  beforeEach(async () => {
+    await rm(CODEX_ROOT, { recursive: true, force: true })
+  })
+
+  afterEach(async () => {
+    await rm(CODEX_ROOT, { recursive: true, force: true })
+  })
+
+  // One codex turn (the issue's provider) with a token_count call on each
+  // side of local midnight: 23:58 (input 1000/output 200), 00:10 (2000/400).
+  async function seedStraddlingCodexTurn(): Promise<void> {
+    const sessionDir = join(CODEX_ROOT, 'codex', 'sessions', '2026', '07', '27')
+    await mkdir(sessionDir, { recursive: true })
+    const line = (obj: unknown): string => JSON.stringify(obj)
+    await writeFile(join(sessionDir, 'rollout-straddle.jsonl'), [
+      line({ type: 'session_meta', timestamp: new Date(2026, 6, 27, 23, 55, 0).toISOString(), payload: { session_id: 'sess-straddle', model: 'gpt-5.5', cwd: '/tmp/straddle-proj', originator: 'codex_cli_rs' } }),
+      line({ type: 'response_item', timestamp: new Date(2026, 6, 27, 23, 57, 0).toISOString(), payload: { type: 'message', role: 'user', content: [{ type: 'input_text', text: 'work through midnight' }] } }),
+      line({ type: 'event_msg', timestamp: new Date(2026, 6, 27, 23, 58, 0).toISOString(), payload: { type: 'token_count', info: { last_token_usage: { input_tokens: 1000, output_tokens: 200 }, total_token_usage: { total_tokens: 1200 } } } }),
+      line({ type: 'event_msg', timestamp: new Date(2026, 6, 28, 0, 10, 0).toISOString(), payload: { type: 'token_count', info: { last_token_usage: { input_tokens: 2000, output_tokens: 400 }, total_token_usage: { total_tokens: 3600 } } } }),
+    ].join('\n') + '\n', 'utf-8')
+  }
+
+  // The same straddle through the Claude Code path (scanProjectDirs).
+  async function seedStraddlingClaudeTurn(): Promise<void> {
+    const projectDir = join(ROOT, 'home', '.claude', 'projects', 'straddle-proj')
+    await mkdir(projectDir, { recursive: true })
+    const line = (obj: unknown): string => JSON.stringify(obj)
+    await writeFile(join(projectDir, 's-straddle.jsonl'), [
+      line({ type: 'user', sessionId: 's-straddle', timestamp: new Date(2026, 6, 27, 23, 57, 0).toISOString(), cwd: '/tmp/straddle-proj', message: { role: 'user', content: 'work through midnight' } }),
+      line({ type: 'assistant', sessionId: 's-straddle', timestamp: new Date(2026, 6, 27, 23, 58, 0).toISOString(), cwd: '/tmp/straddle-proj', message: { id: 'm1', type: 'message', role: 'assistant', model: 'claude-3-5-sonnet-20241022', content: [], usage: { input_tokens: 1000, output_tokens: 200, cache_creation_input_tokens: 0, cache_read_input_tokens: 0 } } }),
+      line({ type: 'assistant', sessionId: 's-straddle', timestamp: new Date(2026, 6, 28, 0, 10, 0).toISOString(), cwd: '/tmp/straddle-proj', message: { id: 'm2', type: 'message', role: 'assistant', model: 'claude-3-5-sonnet-20241022', content: [], usage: { input_tokens: 2000, output_tokens: 400, cache_creation_input_tokens: 0, cache_read_input_tokens: 0 } } }),
+    ].join('\n') + '\n', 'utf-8')
+  }
+
+  // The two calls' exact costs from an unfiltered parse (pricing-agnostic truth).
+  async function truthCosts(provider: string): Promise<[number, number]> {
+    clearSessionCache()
+    const projects = await parseAllSessions(undefined, provider)
+    const calls = projects.flatMap(p => p.sessions).flatMap(s => s.turns).flatMap(t => t.assistantCalls)
+    expect(calls).toHaveLength(2)
+    return [calls[0]!.costUSD, calls[1]!.costUSD]
+  }
+
+  it('keeps day-N + day-N+1 equal to the whole-range totals through buildDurablePeriod', async () => {
+    fakeNow()
+    try {
+      await seedStraddlingCodexTurn()
+      const [costN, costN1] = await truthCosts('codex')
+      expect(costN + costN1).toBeGreaterThan(0)
+
+      const range: DateRange = { start: new Date(2026, 6, 27, 0, 0, 0), end: new Date() }
+      clearSessionCache()
+      const durable = await buildDurablePeriod({ range, label: '2d' }, { provider: 'all' })
+
+      const dayN = durable.days.find(d => d.date === DAY_N)
+      const dayN1 = durable.days.find(d => d.date === DAY_N1)
+      // Each side of the turn lands on its own day...
+      expect(dayN?.calls).toBe(1)
+      expect(dayN1?.calls).toBe(1)
+      expect(dayN!.cost).toBeCloseTo(costN, 8)
+      expect(dayN1!.cost).toBeCloseTo(costN1, 8)
+      // ...and the two sides conserve the whole-range totals (the review's
+      // week/month leak returned 1 call and only the pre-midnight cost).
+      expect(durable.data.calls).toBe(2)
+      expect(dayN!.calls + dayN1!.calls).toBe(durable.data.calls)
+      expect(durable.data.cost).toBeCloseTo(costN + costN1, 8)
+      expect(dayN!.cost + dayN1!.cost).toBeCloseTo(durable.data.cost, 8)
+      expect(durable.data.inputTokens).toBe(3000)
+      expect(durable.data.outputTokens).toBe(600)
+      expect(dayN!.inputTokens + dayN1!.inputTokens).toBe(durable.data.inputTokens)
+      expect(dayN!.outputTokens + dayN1!.outputTokens).toBe(durable.data.outputTokens)
+    } finally {
+      vi.useRealTimers()
+    }
+  }, 60_000)
+
+  it('shows the post-midnight call in the today-only view on the Claude Code path', async () => {
+    fakeNow()
+    try {
+      await seedStraddlingClaudeTurn()
+      const [, costN1] = await truthCosts('claude')
+
+      clearSessionCache()
+      const durable = await buildDurablePeriod({ range: getDateRange('today').range, label: 'today' }, { provider: 'all' })
+      expect(durable.data.calls).toBe(1)
+      expect(durable.data.cost).toBeCloseTo(costN1, 8)
+      expect(durable.data.inputTokens).toBe(2000)
+      expect(durable.data.outputTokens).toBe(400)
+    } finally {
+      vi.useRealTimers()
+    }
+  }, 60_000)
+
+  it('slices the straddling turn per call in the dashboard/menubar surface filters', async () => {
+    fakeNow()
+    try {
+      await seedStraddlingClaudeTurn()
+      clearSessionCache()
+      const all = await parseAllSessions(undefined, 'claude')
+      const callsOf = (ps: typeof all) => ps.flatMap(p => p.sessions).flatMap(s => s.turns).flatMap(t => t.assistantCalls)
+      const inputOf = (ps: typeof all) => ps.flatMap(p => p.sessions).reduce((s, sess) => s + sess.totalInputTokens, 0)
+
+      // Dashboard Today/7-Days narrowing over an unfiltered parse.
+      const dashToday = filterProjectsByDateRange(all, getDateRange('today').range)
+      expect(callsOf(dashToday)).toHaveLength(1)
+      expect(inputOf(dashToday)).toBe(2000)
+
+      // Menubar/history day selection, on each side of midnight.
+      const menubarToday = filterProjectsByDays(all, new Set([DAY_N1]))
+      expect(callsOf(menubarToday)).toHaveLength(1)
+      expect(inputOf(menubarToday)).toBe(2000)
+
+      const menubarYesterday = filterProjectsByDays(all, new Set([DAY_N]))
+      expect(callsOf(menubarYesterday)).toHaveLength(1)
+      expect(inputOf(menubarYesterday)).toBe(1000)
+    } finally {
+      vi.useRealTimers()
+    }
+  }, 60_000)
+})

tests/codex-throughput.test.ts

@@ -0,0 +1,124 @@
+import { appendFile, mkdtemp, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { describe, expect, it } from 'vitest'
+import { CodexThroughputReader, readCodexThroughput, renderCodexThroughput } from '../src/codex-throughput.js'
+
+describe('Codex throughput prototype', () => {
+  it('estimates generated tokens/sec between token_count checkpoints', async () => {
+    const dir = await mkdtemp(join(tmpdir(), 'codeburn-tps-'))
+    const path = join(dir, 'rollout.jsonl')
+    await writeFile(path, [
+      JSON.stringify({ type: 'session_meta', timestamp: '2026-07-25T00:00:00.000Z', payload: { model: 'gpt-5.6-sol' } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:00.000Z', payload: { type: 'task_started' } }),
+      JSON.stringify({ type: 'response_item', timestamp: '2026-07-25T00:00:02.000Z', payload: { type: 'function_call', call_id: 'tool-1' } }),
+      JSON.stringify({ type: 'response_item', timestamp: '2026-07-25T00:00:05.000Z', payload: { type: 'function_call_output', call_id: 'tool-1' } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:05.000Z', payload: { type: 'mcp_tool_call_end', duration: { secs: 3, nanos: 0 } } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:10.000Z', payload: { type: 'token_count', info: { last_token_usage: { output_tokens: 80, reasoning_output_tokens: 20 }, total_token_usage: { total_tokens: 100, output_tokens: 80, reasoning_output_tokens: 20 } } } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:15.000Z', payload: { type: 'token_count', info: { last_token_usage: { output_tokens: 40, reasoning_output_tokens: 10 }, total_token_usage: { total_tokens: 150, output_tokens: 120, reasoning_output_tokens: 30 } } } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:16.000Z', payload: { type: 'task_complete', duration_ms: 10000 } }),
+    ].join('\n'))
+
+    const points = await readCodexThroughput(path)
+    expect(points).toHaveLength(2)
+    expect(points[1]).toMatchObject({ generatedTokens: 50, elapsedSeconds: 5, generatedTokensPerSecond: 10, activeDurationSeconds: 7, activeGeneratedTokensPerSecond: 21.428571428571427, toolWaitSeconds: 3, model: 'gpt-5.6-sol' })
+    expect(renderCodexThroughput(points, path)).toContain('21.4 generated tokens/sec')
+  })
+
+  it('parses only appended complete lines while watching a growing rollout', async () => {
+    const dir = await mkdtemp(join(tmpdir(), 'codeburn-tps-watch-'))
+    const path = join(dir, 'rollout.jsonl')
+    const first = JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:00.000Z', payload: { type: 'token_count', info: { last_token_usage: { output_tokens: 8, reasoning_output_tokens: 2 }, total_token_usage: { total_tokens: 10, output_tokens: 8, reasoning_output_tokens: 2 } } } })
+    const second = JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:01.000Z', payload: { type: 'token_count', info: { last_token_usage: { output_tokens: 4, reasoning_output_tokens: 1 }, total_token_usage: { total_tokens: 15, output_tokens: 12, reasoning_output_tokens: 3 } } } })
+    await writeFile(path, first.slice(0, 40))
+    const reader = new CodexThroughputReader()
+    expect(await reader.update(path)).toEqual([])
+    await appendFile(path, first.slice(40) + '\n' + second + '\n')
+    const points = await reader.update(path)
+    expect(points).toHaveLength(2)
+    expect(points[1]).toMatchObject({ generatedTokens: 5, generatedTokensPerSecond: 5 })
+  })
+
+  it('ignores replayed pre-fork checkpoints before estimating new work', async () => {
+    const dir = await mkdtemp(join(tmpdir(), 'codeburn-tps-fork-'))
+    const path = join(dir, 'rollout.jsonl')
+    const line = (timestamp: string, payload: Record<string, unknown>) => JSON.stringify({ type: 'event_msg', timestamp, payload })
+    await writeFile(path, [
+      JSON.stringify({ type: 'session_meta', timestamp: '2026-07-25T00:00:00.000Z', payload: { model: 'gpt-5.6-sol', forked_from_id: 'parent' } }),
+      line('2026-07-25T00:00:01.000Z', { type: 'task_started' }),
+      line('2026-07-25T00:00:02.000Z', { type: 'token_count', info: { last_token_usage: { output_tokens: 100 }, total_token_usage: { total_tokens: 100, output_tokens: 100 } } }),
+      line('2026-07-25T00:00:03.000Z', { type: 'task_complete', duration_ms: 1000 }),
+      line('2026-07-25T00:00:06.000Z', { type: 'task_started' }),
+      line('2026-07-25T00:00:08.000Z', { type: 'token_count', info: { last_token_usage: { output_tokens: 20 }, total_token_usage: { total_tokens: 20, output_tokens: 20 } } }),
+      line('2026-07-25T00:00:10.000Z', { type: 'task_complete', duration_ms: 4000 }),
+    ].join('\n'))
+
+    const points = await readCodexThroughput(path)
+    expect(points).toHaveLength(1)
+    expect(points[0]).toMatchObject({ generatedTokens: 20, activeGeneratedTokensPerSecond: 5 })
+  })
+
+  it('keeps oversized rollout lines bounded while extracting token usage', async () => {
+    const dir = await mkdtemp(join(tmpdir(), 'codeburn-tps-large-'))
+    const path = join(dir, 'rollout.jsonl')
+    const largeResult = JSON.stringify({
+      type: 'event_msg',
+      timestamp: '2026-07-25T00:00:01.000Z',
+      payload: {
+        type: 'token_count',
+        info: { last_token_usage: { output_tokens: 12 }, total_token_usage: { total_tokens: 12, output_tokens: 12 } },
+        result: 'x'.repeat(5 * 1024 * 1024),
+      },
+    })
+    await writeFile(path, largeResult)
+    const points = await readCodexThroughput(path)
+    expect(points).toHaveLength(1)
+    expect(points[0]?.generatedTokens).toBe(12)
+  })
+
+  it('keeps MCP duration when arguments and result surround the middle field', async () => {
+    const dir = await mkdtemp(join(tmpdir(), 'codeburn-tps-mcp-large-'))
+    const path = join(dir, 'rollout.jsonl')
+    const mcp = JSON.stringify({
+      type: 'event_msg', timestamp: '2026-07-25T00:00:05.000Z',
+      payload: {
+        type: 'mcp_tool_call_end',
+        invocation: { server: 'github', tool: 'get_issue', arguments: { body: 'x'.repeat(5 * 1024 * 1024) } },
+        duration: { secs: 3, nanos: 0 },
+        result: { duration: '9s', text: 'x'.repeat(5 * 1024 * 1024) },
+      },
+    })
+    await writeFile(path, [
+      JSON.stringify({ type: 'session_meta', timestamp: '2026-07-25T00:00:00.000Z', payload: { model: 'gpt-5.6-sol' } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:00.000Z', payload: { type: 'task_started' } }),
+      mcp,
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:08.000Z', payload: { type: 'token_count', info: { last_token_usage: { output_tokens: 100 }, total_token_usage: { total_tokens: 100, output_tokens: 100 } } } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:10.000Z', payload: { type: 'task_complete', duration_ms: 10000 } }),
+    ].join('\n'))
+    const points = await readCodexThroughput(path)
+    expect(points[0]).toMatchObject({ toolWaitSeconds: 3, activeDurationSeconds: 7, activeGeneratedTokensPerSecond: 100 / 7 })
+  })
+
+  it('keeps a streamed string MCP duration when arguments and result surround the middle field', async () => {
+    const dir = await mkdtemp(join(tmpdir(), 'codeburn-tps-mcp-string-large-'))
+    const path = join(dir, 'rollout.jsonl')
+    const mcp = JSON.stringify({
+      type: 'event_msg', timestamp: '2026-07-25T00:00:05.000Z',
+      payload: {
+        type: 'mcp_tool_call_end',
+        invocation: { server: 'github', tool: 'get_issue', arguments: { body: 'x'.repeat(5 * 1024 * 1024) } },
+        duration: '3s',
+        result: { duration: '9s', text: 'x'.repeat(5 * 1024 * 1024) },
+      },
+    })
+    await writeFile(path, [
+      JSON.stringify({ type: 'session_meta', timestamp: '2026-07-25T00:00:00.000Z', payload: { model: 'gpt-5.6-sol' } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:00.000Z', payload: { type: 'task_started' } }),
+      mcp,
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:08.000Z', payload: { type: 'token_count', info: { last_token_usage: { output_tokens: 100 }, total_token_usage: { total_tokens: 100, output_tokens: 100 } } } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-07-25T00:00:10.000Z', payload: { type: 'task_complete', duration_ms: 10000 } }),
+    ].join('\n'))
+    const points = await readCodexThroughput(path)
+    expect(points[0]).toMatchObject({ toolWaitSeconds: 3, activeDurationSeconds: 7, activeGeneratedTokensPerSecond: 100 / 7 })
+  })
+})

tests/daily-cache-carry-forward.test.ts

@@ -609,6 +609,7 @@ describe('adoption union across older cache files', () => {
       lastComputedDate: daysAgoStr(1),
       days: [rich],
       complete: true,
+      watermarkTrusted: true,
     }
     await saveDailyCache(cache)
     const loaded = await loadDailyCache()

tests/daily-cache-degraded-completeness.test.ts

@@ -0,0 +1,187 @@
+import { afterEach, beforeEach, describe, expect, it } from 'vitest'
+import { mkdir, rm } from 'fs/promises'
+import { existsSync } from 'fs'
+import { tmpdir } from 'os'
+import { join } from 'path'
+
+import type { DateRange, ProjectSummary } from '../src/types.js'
+
+import {
+  DAILY_CACHE_VERSION,
+  type DailyCache,
+  type DailyEntry,
+  type ProviderDaySlice,
+  currentTzKey,
+  ensureCacheHydrated,
+  saveDailyCache,
+} from '../src/daily-cache.js'
+
+const TMP_CACHE_ROOT = join(tmpdir(), `codeburn-degraded-test-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`)
+
+beforeEach(async () => {
+  process.env['CODEBURN_CACHE_DIR'] = TMP_CACHE_ROOT
+  await mkdir(TMP_CACHE_ROOT, { recursive: true })
+})
+
+afterEach(async () => {
+  if (existsSync(TMP_CACHE_ROOT)) {
+    await rm(TMP_CACHE_ROOT, { recursive: true, force: true })
+  }
+})
+
+function slice(cost: number, calls: number, extra: Partial<ProviderDaySlice> = {}): ProviderDaySlice {
+  return { cost, calls, savingsUSD: 0, ...extra }
+}
+
+function day(date: string, providers: Record<string, ProviderDaySlice>, overrides: Partial<DailyEntry> = {}): DailyEntry {
+  const cost = Object.values(providers).reduce((s, p) => s + p.cost, 0)
+  const calls = Object.values(providers).reduce((s, p) => s + p.calls, 0)
+  return {
+    date,
+    cost,
+    savingsUSD: 0,
+    calls,
+    sessions: 0,
+    inputTokens: 0,
+    outputTokens: 0,
+    cacheReadTokens: 0,
+    cacheWriteTokens: 0,
+    editTurns: 0,
+    oneShotTurns: 0,
+    models: {},
+    categories: {},
+    providers,
+    ...overrides,
+  }
+}
+
+function daysAgoStr(n: number): string {
+  const d = new Date()
+  d.setDate(d.getDate() - n)
+  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`
+}
+
+const noSessions = async (): Promise<ProjectSummary[]> => []
+
+/// The day whose session files are long gone: it exists in the daily cache and
+/// nowhere else, so every path below must still hand it back untouched.
+const VANISHED = day(daysAgoStr(40), { claude: slice(399.70, 1572) }, { carried: true })
+
+async function seed(overrides: Partial<DailyCache> = {}): Promise<void> {
+  await saveDailyCache({
+    version: DAILY_CACHE_VERSION,
+    savingsConfigHash: 'cfg-A',
+    tzKey: currentTzKey(),
+    lastComputedDate: daysAgoStr(4),
+    days: [VANISHED, day(daysAgoStr(4), { claude: slice(120, 900) })],
+    complete: true,
+    ...overrides,
+  })
+}
+
+/** The vanished-sources day is still there, with its original accounting. */
+function expectPreserved(cache: DailyCache): void {
+  const kept = cache.days.find(d => d.date === VANISHED.date)
+  expect(kept).toMatchObject({ cost: 399.70, calls: 1572 })
+  expect(kept!.providers['claude']!.cost).toBe(399.70)
+}
+
+describe('daily cache: a degraded session parse never finalizes history', () => {
+  it('does not publish complete, and does not advance the watermark past what it covered', async () => {
+    await seed()
+    const out = await ensureCacheHydrated(noSessions, () => [], 'cfg-A', () => false)
+    // The parse covered nothing it can vouch for, so the watermark stays put:
+    // advancing it to yesterday would put the missed days behind gapStart
+    // (lastComputedDate + 1) forever.
+    expect(out.lastComputedDate).toBe(daysAgoStr(4))
+    expect(out.complete).toBe(false)
+    expectPreserved(out)
+  })
+
+  it('does not advance the watermark on the full re-derive path either', async () => {
+    await seed({ complete: false })
+    const out = await ensureCacheHydrated(noSessions, () => [], 'cfg-A', () => false)
+    expect(out.lastComputedDate).toBe(daysAgoStr(4))
+    expect(out.complete).toBe(false)
+    expectPreserved(out)
+  })
+
+  it('a later healthy run rebuilds the days the degraded run missed', async () => {
+    await seed()
+    await ensureCacheHydrated(noSessions, () => [], 'cfg-A', () => false)
+    const missed = [1, 2, 3].map(n => day(daysAgoStr(n), { claude: slice(n * 10, n * 100) }))
+    const healed = await ensureCacheHydrated(noSessions, () => missed, 'cfg-A', () => true)
+    expect(healed.days.map(d => d.date)).toEqual([
+      daysAgoStr(40), daysAgoStr(4), daysAgoStr(3), daysAgoStr(2), daysAgoStr(1),
+    ])
+    expect(healed.lastComputedDate).toBe(daysAgoStr(1))
+    expect(healed.complete).toBe(true)
+    expectPreserved(healed)
+  })
+})
+
+describe('daily cache: a complete cache that outruns its own data is not trusted', () => {
+  it('re-derives the days between the newest entry and the watermark', async () => {
+    // The field artifact: complete: true, lastComputedDate yesterday, entries
+    // stopping four days earlier — written by a run that finalized off a parse
+    // which never covered those days.
+    await seed({ lastComputedDate: daysAgoStr(1) })
+    const ranges: DateRange[] = []
+    const missed = [1, 2, 3].map(n => day(daysAgoStr(n), { claude: slice(n * 10, n * 100) }))
+    const out = await ensureCacheHydrated(
+      async (range) => { ranges.push(range); return [] },
+      () => missed,
+      'cfg-A',
+      () => true,
+    )
+    expect(ranges).toHaveLength(1)
+    expect(out.days.map(d => d.date)).toEqual([
+      daysAgoStr(40), daysAgoStr(4), daysAgoStr(3), daysAgoStr(2), daysAgoStr(1),
+    ])
+    expect(out.days.find(d => d.date === daysAgoStr(2))!.cost).toBe(20)
+    expect(out.complete).toBe(true)
+    expectPreserved(out)
+  })
+
+  it('trusts a stamped watermark over an idle tail — no re-derive treadmill', async () => {
+    // Same shape as the corrupt case above (watermark past the newest populated
+    // day), but stamped by a COMPLETE parse: the recent days are genuinely
+    // empty, not a frozen hole. A degraded parse can no longer produce this
+    // state, so the stamp means the watermark is trustworthy and re-deriving the
+    // empty tail on every launch (the perf regression) must not happen.
+    await seed({ lastComputedDate: daysAgoStr(1), watermarkTrusted: true })
+    let parses = 0
+    const out = await ensureCacheHydrated(
+      async () => { parses += 1; return [] },
+      () => [],
+      'cfg-A',
+      () => true,
+    )
+    expect(parses).toBe(0)
+    expect(out.lastComputedDate).toBe(daysAgoStr(1))
+    expect(out.complete).toBe(true)
+    expectPreserved(out)
+  })
+
+  it('a degraded re-derivation of those days still keeps every carried day', async () => {
+    await seed({ lastComputedDate: daysAgoStr(1) })
+    const out = await ensureCacheHydrated(noSessions, () => [], 'cfg-A', () => false)
+    expect(out.complete).toBe(false)
+    expect(out.days.map(d => d.date)).toEqual([daysAgoStr(40), daysAgoStr(4)])
+    expectPreserved(out)
+  })
+
+  it('an empty cache still finalizes — no re-parse treadmill on a machine with no history', async () => {
+    await seed({ days: [], lastComputedDate: daysAgoStr(1) })
+    let parses = 0
+    const out = await ensureCacheHydrated(
+      async () => { parses += 1; return [] },
+      () => [],
+      'cfg-A',
+      () => true,
+    )
+    expect(parses).toBe(0)
+    expect(out.lastComputedDate).toBe(daysAgoStr(1))
+    expect(out.complete).toBe(true)
+  })
+})

tests/daily-cache.test.ts

@@ -183,6 +183,7 @@ describe('loadDailyCache', () => {
       lastComputedDate: '2026-04-10',
       days: [emptyDay('2026-04-09', 12.5, 40), emptyDay('2026-04-10', 7.25, 28)],
       complete: true,
+      watermarkTrusted: true,
     }
     await saveDailyCache(saved)
     const loaded = await loadDailyCache()
@@ -318,6 +319,7 @@ describe('ensureCacheHydrated', () => {
       lastComputedDate: '2026-06-11',
       days: [emptyDay('2026-06-11', 5, 10)],
       complete: true,
+      watermarkTrusted: true,
     }
     await saveDailyCache(saved)
 

tests/dashboard.test.ts

@@ -2,7 +2,7 @@ import { homedir } from 'os'
 
 import { describe, it, expect } from 'vitest'
 
-import { getDailyActivityRows, getDashboardScanRange, pageHistoryCursor, scrollHistoryCursor, selectDashboardPeriodProjects, shortProject, showEmptyState } from '../src/dashboard.js'
+import { getDailyActivityRows, getDashboardScanRange, getLayout, pageHistoryCursor, scrollHistoryCursor, selectDashboardPeriodProjects, shortProject, showEmptyState } from '../src/dashboard.js'
 import { getDateRange } from '../src/cli-date.js'
 import { formatCost } from '../src/format.js'
 import type { ProjectSummary, SessionSummary } from '../src/types.js'
@@ -248,3 +248,25 @@ describe('showEmptyState', () => {
     expect(showEmptyState(2, false, 0, false)).toBe(false)
   })
 })
+
+describe('getLayout - dashboard width breakpoints', () => {
+  it('uses a single column at 89 columns or below', () => {
+    expect(getLayout(89)).toMatchObject({ dashWidth: 89, wide: false, halfWidth: 89 })
+  })
+
+  it('switches to two columns at 90 columns', () => {
+    expect(getLayout(90)).toMatchObject({ dashWidth: 90, wide: true, halfWidth: 45 })
+  })
+
+  it('keeps two columns at 120 columns but the By-Model panel is too narrow for Tok/s', () => {
+    // Inner panel width is halfWidth - PANEL_CHROME (4). At 120 cols halfWidth=60,
+    // inner=56, below the 61-col threshold where Tok/s renders.
+    expect(getLayout(120)).toMatchObject({ dashWidth: 120, wide: true, halfWidth: 60 })
+    expect(getLayout(120).halfWidth - 4).toBeLessThan(61)
+  })
+
+  it('keeps two columns and has enough room for Tok/s at 130 columns', () => {
+    expect(getLayout(130)).toMatchObject({ dashWidth: 130, wide: true, halfWidth: 65 })
+    expect(getLayout(130).halfWidth - 4).toBeGreaterThanOrEqual(61)
+  })
+})

tests/day-aggregator.test.ts

@@ -74,10 +74,12 @@ function makeSingleTurnProject(
 }
 
 describe('aggregateProjectsIntoDays', () => {
-  it('buckets a whole turn (all its calls) on the turn user-message date', () => {
-    // Turn-anchored bucketing: a turn whose calls straddle midnight lands wholly
-    // on the day of its user-message timestamp — matching the live headline/
-    // report rollup — instead of splitting per-call across two days.
+  it("buckets call-derived values under each call's own date when a turn straddles midnight", () => {
+    // Per-call bucketing (issue #852): a turn whose calls straddle midnight
+    // puts each call's cost/calls/tokens on the day the call happened, so
+    // day-N + day-N+1 reconcile with a range parse that sliced the turn at
+    // the same boundary. Turn-level judgments (editTurns, category turns)
+    // stay anchored on the turn's day.
     const projects: ProjectSummary[] = [
       makeProject({
         sessions: [{
@@ -116,9 +118,17 @@ describe('aggregateProjectsIntoDays', () => {
     ]
 
     const days = aggregateProjectsIntoDays(projects)
-    expect(days.map(d => d.date)).toEqual(['2026-04-09'])
-    expect(days[0]!.cost).toBe(10)
-    expect(days[0]!.calls).toBe(2)
+    expect(days.map(d => d.date)).toEqual(['2026-04-09', '2026-04-10'])
+    expect(days[0]!.cost).toBe(4)
+    expect(days[0]!.calls).toBe(1)
+    expect(days[1]!.cost).toBe(6)
+    expect(days[1]!.calls).toBe(1)
+    // Turn-level stats anchor on the turn's day only — they describe the
+    // whole exchange, not a per-call sum.
+    expect(days[0]!.editTurns).toBe(1)
+    expect(days[1]!.editTurns).toBe(0)
+    expect(days[0]!.categories['coding']?.turns).toBe(1)
+    expect(days[1]!.categories['coding']).toBeUndefined()
   })
 
   it('attributes category turns + editTurns + oneShotTurns to the first call date of the turn', () => {
@@ -406,17 +416,17 @@ describe('buildPeriodDataFromDays', () => {
     expect(pd.models).toEqual([])
   })
 
-  it('attributes a midnight-straddling turn to the user-message date, matching the live report', () => {
-    // A turn whose user message sits on one side of midnight and whose assistant
-    // response lands on the other must bucket by the USER-MESSAGE timestamp, so
-    // the daily cache (history.daily + provider breakdown) reconciles exactly to
-    // the live headline/report rollup (main.ts daily), which anchors on the same
-    // turn timestamp. The prior per-call bucketing split such turns and left a
-    // constant offset between the trend bars and current.cost.
+  it("attributes a midnight-straddling turn's cost to the call's own date", () => {
+    // A turn whose user message sits on one side of midnight and whose
+    // assistant response lands on the other buckets its cost under the CALL's
+    // day (issue #852's per-call rule), so the daily cache (history.daily +
+    // provider breakdown) reconciles exactly to a range parse that slices the
+    // same turn at the same boundary — and day-N + day-N+1 sum to the period
+    // total with nothing lost on either side.
     const userTs = '2026-04-20T23:58:00Z'
     const assistantTs = '2026-04-21T00:30:00Z'
-    const userLocal = new Date(userTs)
-    const expectedDate = `${userLocal.getFullYear()}-${String(userLocal.getMonth() + 1).padStart(2, '0')}-${String(userLocal.getDate()).padStart(2, '0')}`
+    const assistantLocal = new Date(assistantTs)
+    const expectedDate = `${assistantLocal.getFullYear()}-${String(assistantLocal.getMonth() + 1).padStart(2, '0')}-${String(assistantLocal.getDate()).padStart(2, '0')}`
 
     const projects: ProjectSummary[] = [
       makeProject({
@@ -457,21 +467,22 @@ describe('daily-cache ↔ report daily-bucket parity', () => {
   // headline (main.ts daily rollup) must bucket days by the SAME rule, or their
   // per-day totals drift and their period sums diverge from current.cost at
   // window boundaries — the V1 audit's constant -$3.45/-81-calls finding. Both
-  // are now TURN-anchored: this asserts per-day equality against a reference
-  // that mirrors main.ts:486-499 (turn.timestamp anchor), plus the invariant
-  // history.daily Σ == report.daily Σ == total call cost.
+  // are now PER-CALL for cost/savings/calls (issue #852) with turn-level stats
+  // still turn-anchored: this asserts per-day equality against a reference
+  // that mirrors main.ts buildJsonReport's dailyMap fallback (each call on its
+  // own date), plus the invariant history.daily Σ == report.daily Σ == total
+  // call cost.
 
-  // Mirrors the live report/headline daily rollup in src/main.ts (bucket the
-  // whole turn — all its calls — on the turn's user-message date).
+  // Mirrors the live report/headline daily rollup fallback in src/main.ts
+  // (cost/savings/calls bucket under each call's own date).
   function reportDailyByDate(projects: ProjectSummary[]): Record<string, number> {
     const byDate: Record<string, number> = {}
     for (const p of projects) {
       for (const sess of p.sessions) {
         for (const turn of sess.turns) {
-          if (turn.assistantCalls.length === 0) continue
-          const ts = turn.timestamp || turn.assistantCalls[0]!.timestamp
-          const day = dateKey(ts)
-          for (const call of turn.assistantCalls) byDate[day] = (byDate[day] ?? 0) + call.costUSD
+          for (const call of turn.assistantCalls) {
+            byDate[dateKey(call.timestamp)] = (byDate[dateKey(call.timestamp)] ?? 0) + call.costUSD
+          }
         }
       }
     }
@@ -492,8 +503,8 @@ describe('daily-cache ↔ report daily-bucket parity', () => {
     expect(dayA).not.toBe(dayB) // sanity: the fixture really straddles local midnight
 
     // A midnight-straddling turn (calls on both days) plus a same-day turn, so
-    // per-CALL bucketing would produce DIFFERENT per-day totals than the turn-
-    // anchored report — the case the old code got wrong.
+    // whole-TURN anchoring would produce DIFFERENT per-day totals than the
+    // per-call rule — the case the old code got wrong.
     const projects: ProjectSummary[] = [
       makeProject({
         sessions: [{
@@ -541,8 +552,10 @@ describe('daily-cache ↔ report daily-bucket parity', () => {
     const totalCallCost = 2 + 3 + 7
     expect(historySum).toBeCloseTo(totalCallCost, 10)
     expect(reportSum).toBeCloseTo(totalCallCost, 10)
-    // Day A owns the WHOLE straddling turn (2+3=5), not just its first call (2).
-    expect(historyByDate[dayA]).toBe(5)
-    expect(historyByDate[dayB]).toBe(7)
+    // Day A owns only the straddling turn's pre-midnight call (2); day B owns
+    // the post-midnight call plus the same-day turn (3+7=10). Both paths agree
+    // per day and the period total is conserved.
+    expect(historyByDate[dayA]).toBe(2)
+    expect(historyByDate[dayB]).toBe(10)
   })
 })

tests/fixtures/cache-refresh-corrupt-owner.ts

@@ -0,0 +1,22 @@
+import { writeFile } from 'fs/promises'
+import { join } from 'path'
+
+import { acquireCacheRefreshLock } from '../../src/cache-refresh-lock.js'
+
+// A plain owner in its own process. It records its outcome, its token, and the
+// result of the publication fence into the barrier directory so the parent can
+// assert what the owner itself believed while a contender was racing it.
+const [cacheDir, barrierDir, holdMs, heartbeatMs = '200'] = process.argv.slice(2)
+if (!cacheDir || !barrierDir || !holdMs) throw new Error('missing owner argument')
+
+const refresh = await acquireCacheRefreshLock({ cacheDir, heartbeatMs: Number(heartbeatMs) })
+if (refresh.outcome !== 'acquired') {
+  await writeFile(join(barrierDir, `owner.${refresh.outcome}`), '')
+  process.exit(0)
+}
+await writeFile(join(barrierDir, 'owner.acquired'), refresh.handle.token)
+await new Promise(resolve => { setTimeout(resolve, Number(holdMs)) })
+// The publication fence, exactly as parser.ts uses it before saving.
+await writeFile(join(barrierDir, `owner.verify.${await refresh.handle.verifyStillOwner()}`), '')
+await refresh.handle.release()
+await writeFile(join(barrierDir, 'owner.done'), '')

tests/fixtures/cache-refresh-slow-owner.ts

@@ -0,0 +1,25 @@
+import { pbkdf2 } from 'crypto'
+import { writeFile } from 'fs/promises'
+import { join } from 'path'
+
+import { acquireCacheRefreshLock } from '../../src/cache-refresh-lock.js'
+
+// Saturate the (size-1) libuv threadpool so every fs operation inside
+// createExclusive queues behind a pbkdf2 round. No test hook and no patched
+// module: this is what an ordinary process looks like mid cold parse, and it
+// widens the window in which the lock exists at zero bytes -- between
+// open(path,'wx') and the awaited body write -- to something observable.
+const [cacheDir, barrierDir] = process.argv.slice(2)
+if (!cacheDir || !barrierDir) throw new Error('missing owner argument')
+
+let stop = false
+const churn = (): void => { if (stop) return; pbkdf2('p', 's', 400_000, 32, 'sha512', () => churn()) }
+churn()
+
+const refresh = await acquireCacheRefreshLock({ cacheDir, heartbeatMs: 10_000 })
+stop = true
+await writeFile(join(barrierDir, `owner.${refresh.outcome}`), refresh.outcome === 'acquired' ? refresh.handle.token : '')
+if (refresh.outcome === 'acquired') {
+  await writeFile(join(barrierDir, `owner.verify.${await refresh.handle.verifyStillOwner()}`), '')
+  await refresh.handle.release()
+}

tests/fixtures/mock-idp.ts

@@ -34,6 +34,8 @@ export interface MockIdp {
   revokedTokens: string[]
   /** Authorization codes that have been exchanged */
   exchangedCodes: string[]
+  /** OTLP trace batches received at POST /v1/traces */
+  tracesRequests: Array<{ auth: string | undefined; body: unknown }>
 }
 
 export async function startMockIdp(opts: MockIdpOptions = {}): Promise<MockIdp> {
@@ -52,6 +54,7 @@ export async function startMockIdp(opts: MockIdpOptions = {}): Promise<MockIdp>
     issuedTokens: { access: [], refresh: [] },
     revokedTokens: [],
     exchangedCodes: [],
+    tracesRequests: [],
     close: async () => {},
   }
 
@@ -59,6 +62,20 @@ export async function startMockIdp(opts: MockIdpOptions = {}): Promise<MockIdp>
     const url = new URL(req.url ?? '/', `http://127.0.0.1:${state.port}`)
     const path = url.pathname
 
+    // --- OTLP traces collector (records batches for push tests) ---
+    if (path === '/v1/traces' && req.method === 'POST') {
+      let body = ''
+      req.on('data', chunk => { body += chunk })
+      req.on('end', () => {
+        let parsed: unknown = null
+        try { parsed = JSON.parse(body || '{}') } catch { /* keep null */ }
+        state.tracesRequests.push({ auth: req.headers.authorization, body: parsed })
+        res.writeHead(200, { 'Content-Type': 'application/json' })
+        res.end('{}')
+      })
+      return
+    }
+
     // --- Discovery doc ---
     if (path === '/.well-known/codeburn-export.json') {
       res.writeHead(200, { 'Content-Type': 'application/json' })

tests/parser-cache-refresh-timeout.test.ts

@@ -7,7 +7,7 @@ vi.mock('../src/cache-refresh-lock.js', () => ({
   acquireCacheRefreshLock: async () => ({ outcome: 'timed-out' as const }),
 }))
 
-import { clearSessionCache, parseAllSessions } from '../src/parser.js'
+import { clearSessionCache, isSessionHydrationComplete, parseAllSessions } from '../src/parser.js'
 import { sessionCachePath } from '../src/session-cache.js'
 
 let root: string
@@ -59,4 +59,46 @@ describe('parseAllSessions warm refresh timeout', () => {
     expect(output(await parseAllSessions(undefined, 'claude'))).toBe(50)
     expect(await readFile(sessionCachePath(), 'utf-8')).toBe(before)
   })
+
+  // The snapshot a timed-out refresh serves is only as good as what has changed
+  // under it. Anything the daily backfill finalizes off a snapshot that skipped
+  // real files freezes those days out of history for good, so the completeness
+  // signal has to distinguish the two cases.
+  it('does not report a complete hydration when the served snapshot is stale', async () => {
+    await writeSession(50)
+    await parseAllSessions(undefined, 'claude')
+    expect(isSessionHydrationComplete()).toBe(true)
+
+    await writeSession(5000)
+    clearSessionCache()
+    await parseAllSessions(undefined, 'claude')
+    expect(isSessionHydrationComplete()).toBe(false)
+  })
+
+  it('does not report a complete hydration when a session file is missing from the snapshot', async () => {
+    await writeSession(50)
+    await parseAllSessions(undefined, 'claude')
+
+    await writeFile(join(sessionPath, '..', 'other.jsonl'), JSON.stringify({
+      type: 'assistant',
+      sessionId: 'sess-2',
+      timestamp: '2026-05-16T10:00:00Z',
+      cwd: '/tmp/proj',
+      message: {
+        id: 'msg-other', type: 'message', role: 'assistant', model: 'claude-sonnet-4-5',
+        content: [], usage: { input_tokens: 100, output_tokens: 7 },
+      },
+    }) + '\n')
+    clearSessionCache()
+    await parseAllSessions(undefined, 'claude')
+    expect(isSessionHydrationComplete()).toBe(false)
+  })
+
+  it('still reports a complete hydration when nothing changed under the snapshot', async () => {
+    await writeSession(50)
+    await parseAllSessions(undefined, 'claude')
+    clearSessionCache()
+    await parseAllSessions(undefined, 'claude')
+    expect(isSessionHydrationComplete()).toBe(true)
+  })
 })

tests/parser.test.ts

@@ -488,3 +488,114 @@ describe('(g) skill attribution is independent of turn category', () => {
     expect(session!.skillBreakdown['telemetry-review']?.turns).toBe(1)
   })
 })
+
+// ═══════════════════════════════════════════════════════════════════════════
+// (h) Provider filter isolates claude: a --provider <other> run must not
+//     re-surface cached claude sessions through the orphan pass, while a run
+//     that DOES include claude still preserves PR-bearing orphans.
+// ═══════════════════════════════════════════════════════════════════════════
+describe('(h) provider filter excludes claude from the orphan pass', () => {
+  const SYNTH_SOURCE = (path: string): SessionSource[] =>
+    [{ path, project: 'synth-proj', provider: 'test-synthetic' }]
+
+  // The provider lives on each parsed call, not on SessionSummary.
+  const providersOf = (projects: Awaited<ReturnType<typeof parseAllSessions>>): Set<string> =>
+    new Set(projects
+      .flatMap(p => p.sessions)
+      .flatMap(s => s.turns)
+      .flatMap(t => t.assistantCalls)
+      .map(c => c.provider))
+
+  const SYNTH_CALL: ParsedProviderCall = {
+    provider: 'test-synthetic', model: 'gpt-4o',
+    inputTokens: 10, outputTokens: 5,
+    cacheCreationInputTokens: 0, cacheReadInputTokens: 0,
+    cachedInputTokens: 0, reasoningTokens: 0, webSearchRequests: 0,
+    costUSD: 0.25, tools: [], bashCommands: [],
+    skills: [],
+    timestamp: '2026-07-18T12:00:00.000Z',
+    speed: 'standard',
+    deduplicationKey: 'synth-isolation-call',
+    userMessage: '', sessionId: 'synth-isolation-session',
+  }
+
+  // A claude transcript carrying a pr-link: `prLinks` is exactly what lets a
+  // cached entry survive the write-mode orphan gate, so it is the shape that
+  // leaks. Cost is deliberately far larger than the synthetic call's, so a leak
+  // is unmistakable rather than a rounding difference.
+  async function writeClaudeSessionWithPrLink(): Promise<string> {
+    const projectDir = join(tmpHome, '.claude', 'projects', 'leaky-app')
+    await mkdir(projectDir, { recursive: true })
+    const filePath = join(projectDir, 'session.jsonl')
+    await writeFile(filePath, [
+      JSON.stringify({
+        type: 'user', sessionId: 'claude-leak-1', timestamp: '2026-07-18T12:00:00.000Z',
+        message: { role: 'user', content: 'ship it' },
+      }),
+      JSON.stringify({
+        type: 'assistant', sessionId: 'claude-leak-1', timestamp: '2026-07-18T12:00:10.000Z',
+        message: {
+          id: 'msg-leak-1', type: 'message', role: 'assistant', model: 'claude-sonnet-4-5',
+          content: [{ type: 'text', text: 'done' }],
+          usage: { input_tokens: 900_000, output_tokens: 90_000 },
+        },
+      }),
+      JSON.stringify({
+        type: 'pr-link', sessionId: 'claude-leak-1', timestamp: '2026-07-18T12:00:20.000Z',
+        prUrl: 'https://github.com/getagentseal/codeburn/pull/1',
+      }),
+    ].join('\n') + '\n')
+    return filePath
+  }
+
+  it('does not surface cached claude sessions when filtering to another provider', async () => {
+    const synthFile = join(tmpHome, 'synth-isolation.txt')
+    await writeFile(synthFile, 'placeholder')
+    await writeClaudeSessionWithPrLink()
+
+    _synthSources = SYNTH_SOURCE(synthFile)
+    _synthYields = [SYNTH_CALL]
+
+    // Baseline: what the synthetic provider costs on its own, before anything
+    // claude-shaped has ever entered the session cache. Self-calibrating, since
+    // cost is re-derived from tokens by the pricing engine.
+    const baseline = await parseAllSessions(undefined, 'test-synthetic')
+    const synthOnlyCost = totalCost(baseline)
+    expect([...providersOf(baseline)]).toEqual(['test-synthetic'])
+    clearSessionCache()
+
+    // Warm the session cache so the claude file is persisted WITH its prLinks.
+    const all = await parseAllSessions(undefined, 'all')
+    expect(providersOf(all)).toContain('claude')
+    expect(totalCost(all)).toBeGreaterThan(synthOnlyCost)
+
+    clearSessionCache()
+
+    // Filtering to the synthetic provider must yield ONLY its own spend. Before
+    // the fix, claudeDirs was empty yet scanProjectDirs still ran, so every
+    // cached PR-bearing claude file was treated as a pruned orphan and re-added.
+    const filtered = await parseAllSessions(undefined, 'test-synthetic')
+
+    expect([...providersOf(filtered)]).toEqual(['test-synthetic'])
+    expect(totalCost(filtered)).toBeCloseTo(synthOnlyCost, 10)
+  })
+
+  it('still preserves a PR-bearing claude orphan when claude IS in scope', async () => {
+    const filePath = await writeClaudeSessionWithPrLink()
+    _synthSources = []
+    _synthYields = []
+
+    const before = await parseAllSessions(undefined, 'all')
+    const costBefore = totalCost(before)
+    expect(costBefore).toBeGreaterThan(0)
+
+    // Every claude transcript disappears from disk. Claude is still in scope, so
+    // the orphan pass must keep the PR-attributed spend alive — this is the case
+    // a naive `claudeDirs.length > 0` guard would silently break.
+    await unlink(filePath)
+    clearSessionCache()
+
+    const after = await parseAllSessions(undefined, 'all')
+    expect(totalCost(after)).toBeCloseTo(costBefore, 10)
+  })
+})

tests/project-filter-durable-totals.test.ts

@@ -0,0 +1,374 @@
+import { afterEach, beforeAll, beforeEach, describe, expect, it } from 'vitest'
+import { mkdir, rm, writeFile } from 'fs/promises'
+import { existsSync } from 'fs'
+import { tmpdir } from 'os'
+import { join } from 'path'
+
+import { DAILY_CACHE_VERSION, currentTzKey, type DailyCache, type DailyEntry } from '../src/daily-cache.js'
+import { loadPricing } from '../src/models.js'
+import { buildDurablePeriod, buildMenubarPayloadForRange, buildPeriodData, getDailyCacheConfigHash } from '../src/usage-aggregator.js'
+import { parseAllSessions, filterProjectsByName, clearSessionCache } from '../src/parser.js'
+import { renderOverview } from '../src/overview.js'
+import type { DateRange } from '../src/types.js'
+
+// The durable headline (overview / report Overview panel / menubar current) is
+// built from the carry-forward daily cache unioned with today's live parse, so
+// days whose session files expired still count. Historical days were sliced to
+// the requested PROVIDER but never to the requested PROJECT, so
+// `--project` / `--exclude` were silently ignored for every day except today:
+// the Overview total counted excluded projects while every detail panel (By
+// Project / By Activity / By Model, all built from the name-filtered live
+// parse) left them out, and the two panels could not be reconciled.
+//
+// Per-project day stats exist in the cache since v15 (DailyEntry.projects), so
+// the historical days CAN be sliced — that is what these tests pin down.
+
+const ROOT = join(tmpdir(), `codeburn-project-filter-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`)
+const ENV_KEYS = ['HOME', 'CODEBURN_CACHE_DIR', 'CLAUDE_CONFIG_DIR', 'CLAUDE_CONFIG_DIRS', 'CODEX_HOME'] as const
+let savedEnv: Record<string, string | undefined>
+
+// One carried day, split across two projects. The day totals are the sum, so a
+// correct project slice returns strictly less than the whole day.
+const KEEP = { cost: 30, calls: 10, sessions: 1 }
+const DROP = { cost: 70, calls: 30, sessions: 2 }
+const DAY_COST = KEEP.cost + DROP.cost
+const DAY_CALLS = KEEP.calls + DROP.calls
+const DAY_SESSIONS = KEEP.sessions + DROP.sessions
+
+function daysAgoStr(n: number): string {
+  const d = new Date(Date.now() - n * 24 * 60 * 60 * 1000)
+  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, '0')}-${String(d.getDate()).padStart(2, '0')}`
+}
+
+/** A day only the cache holds (sources aged out), split across two projects. */
+function carriedDayWithProjects(date: string): DailyEntry {
+  const projects = {
+    'keep-me': { cost: KEEP.cost, calls: KEEP.calls, savingsUSD: 0, sessions: KEEP.sessions, path: '/Users/gone/keep-me' },
+    'drop-me': { cost: DROP.cost, calls: DROP.calls, savingsUSD: 0, sessions: DROP.sessions, path: '/Users/gone/drop-me' },
+  }
+  return {
+    date,
+    cost: DAY_COST,
+    savingsUSD: 0,
+    calls: DAY_CALLS,
+    sessions: DAY_SESSIONS,
+    inputTokens: 5000,
+    outputTokens: 2000,
+    cacheReadTokens: 0,
+    cacheWriteTokens: 0,
+    editTurns: 4,
+    oneShotTurns: 2,
+    models: { 'Opus 4.8': { calls: DAY_CALLS, cost: DAY_COST, savingsUSD: 0, inputTokens: 5000, outputTokens: 2000, cacheReadTokens: 0, cacheWriteTokens: 0 } },
+    categories: { coding: { turns: 10, cost: DAY_COST, savingsUSD: 0, editTurns: 4, oneShotTurns: 2 } },
+    providers: {
+      claude: {
+        calls: DAY_CALLS, cost: DAY_COST, savingsUSD: 0, sessions: DAY_SESSIONS,
+        inputTokens: 5000, outputTokens: 2000, cacheReadTokens: 0, cacheWriteTokens: 0,
+        editTurns: 4, oneShotTurns: 2,
+        models: { 'Opus 4.8': { calls: DAY_CALLS, cost: DAY_COST, savingsUSD: 0, inputTokens: 5000, outputTokens: 2000, cacheReadTokens: 0, cacheWriteTokens: 0 } },
+        categories: { coding: { turns: 10, cost: DAY_COST, savingsUSD: 0, editTurns: 4, oneShotTurns: 2 } },
+        projects,
+      },
+    },
+    projects,
+    carried: true,
+  }
+}
+
+/** A carried day recorded before v15: totals, but no per-project split at all. */
+function carriedDayWithoutProjects(date: string): DailyEntry {
+  const day = carriedDayWithProjects(date)
+  delete day.projects
+  delete day.providers['claude']!.projects
+  return day
+}
+
+async function seedCache(...days: DailyEntry[]): Promise<void> {
+  const cache: DailyCache = {
+    version: DAILY_CACHE_VERSION,
+    savingsConfigHash: getDailyCacheConfigHash(),
+    tzKey: currentTzKey(),
+    lastComputedDate: daysAgoStr(1),
+    days,
+    complete: true,
+  }
+  await writeFile(join(ROOT, 'cache', `daily-cache.v${DAILY_CACHE_VERSION}.json`), JSON.stringify(cache), 'utf-8')
+}
+
+/** A real, priced Claude session dated TODAY, under project dir `live-proj`. */
+async function seedLiveTodaySession(): Promise<void> {
+  const projectDir = join(ROOT, 'home', '.claude', 'projects', 'live-proj')
+  await mkdir(projectDir, { recursive: true })
+  const now = new Date()
+  // Timestamps a few minutes OLD, clamped into today: a wall-clock hour (12:00)
+  // is in the future whenever the suite runs before noon, and the periods here
+  // end at `new Date()`, so a fixed hour made the live half of the union vanish
+  // for a morning run. Relative-and-clamped keeps the session inside today and
+  // in the past at every hour.
+  const midnight = new Date(now.getFullYear(), now.getMonth(), now.getDate()).getTime()
+  const minutesAgo = (m: number): string => new Date(Math.max(midnight, now.getTime() - m * 60_000)).toISOString()
+  const line = (id: string, t: string): string => JSON.stringify({
+    type: 'assistant',
+    timestamp: t,
+    sessionId: 's-today',
+    message: {
+      type: 'message', role: 'assistant', model: 'claude-3-5-sonnet-20241022', id,
+      content: [],
+      usage: { input_tokens: 90000, output_tokens: 12000, cache_creation_input_tokens: 0, cache_read_input_tokens: 300000 },
+    },
+  })
+  await writeFile(join(projectDir, 's-today.jsonl'), [line('m1', minutesAgo(10)), line('m2', minutesAgo(5))].join('\n') + '\n', 'utf-8')
+}
+
+/** What the name-filtered live parse alone reports — the By Project panel's source. */
+async function liveOnly(range: DateRange, include: string[], exclude: string[]): Promise<{ cost: number; calls: number }> {
+  clearSessionCache()
+  const projects = filterProjectsByName(await parseAllSessions(range, 'all'), include, exclude)
+  const data = buildPeriodData('live', projects)
+  return { cost: data.cost, calls: data.calls }
+}
+
+beforeAll(async () => {
+  await loadPricing()
+})
+
+beforeEach(async () => {
+  savedEnv = Object.fromEntries(ENV_KEYS.map(k => [k, process.env[k]]))
+  await mkdir(join(ROOT, 'home', '.claude'), { recursive: true })
+  await mkdir(join(ROOT, 'cache'), { recursive: true })
+  process.env['HOME'] = join(ROOT, 'home')
+  process.env['CODEBURN_CACHE_DIR'] = join(ROOT, 'cache')
+  process.env['CLAUDE_CONFIG_DIR'] = join(ROOT, 'home', '.claude')
+  delete process.env['CLAUDE_CONFIG_DIRS']
+  delete process.env['CODEX_HOME']
+  clearSessionCache()
+})
+
+afterEach(async () => {
+  clearSessionCache()
+  for (const k of ENV_KEYS) {
+    if (savedEnv[k] === undefined) delete process.env[k]
+    else process.env[k] = savedEnv[k]
+  }
+  if (existsSync(ROOT)) await rm(ROOT, { recursive: true, force: true })
+})
+
+// A fixed 20-day window back from now: it always spans the carried day (10 days
+// ago) and today, so the period never depends on where "now" falls in the
+// calendar. A real `month` range drops the 10-days-ago day whenever today is
+// within 10 days of the 1st, which made these tests flake early in each month.
+const coveringRange = (): DateRange => ({
+  start: new Date(Date.now() - 20 * 24 * 60 * 60 * 1000),
+  end: new Date(),
+})
+
+describe('durable headline honours --project / --exclude on carried days', () => {
+  it('drops an excluded project from the headline so it reconciles with the By Project panel', async () => {
+    await seedCache(carriedDayWithProjects(daysAgoStr(10)))
+    await seedLiveTodaySession()
+    const range = coveringRange()
+
+    const live = await liveOnly(range, [], ['drop-me'])
+    clearSessionCache()
+    const durable = await buildDurablePeriod({ range, label: 'p' }, { provider: 'all', exclude: ['drop-me'] })
+
+    // The headline counts the surviving sessions plus ONLY the kept project's
+    // carried cost — not the whole carried day.
+    expect(durable.data.cost).toBeCloseTo(live.cost + KEEP.cost, 6)
+    expect(durable.data.calls).toBe(live.calls + KEEP.calls)
+    // And it reconciles with the detail panels, which see the same live parse.
+    const byProject = durable.liveProjects.reduce((s, p) => s + p.totalCostUSD, 0)
+    expect(durable.data.cost).toBeCloseTo(byProject + KEEP.cost, 6)
+  })
+
+  it('keeps only the named project when --project is given', async () => {
+    await seedCache(carriedDayWithProjects(daysAgoStr(10)))
+    await seedLiveTodaySession()
+    const range = coveringRange()
+
+    const live = await liveOnly(range, ['keep-me'], [])
+    clearSessionCache()
+    const durable = await buildDurablePeriod({ range, label: 'p' }, { provider: 'all', project: ['keep-me'] })
+
+    expect(durable.data.cost).toBeCloseTo(live.cost + KEEP.cost, 6)
+    expect(durable.data.calls).toBe(live.calls + KEEP.calls)
+  })
+
+  it('matches a filter against the project path as well as its name', async () => {
+    await seedCache(carriedDayWithProjects(daysAgoStr(10)))
+    await seedLiveTodaySession()
+    const range = coveringRange()
+
+    const live = await liveOnly(range, [], ['/Users/gone/drop-me'])
+    clearSessionCache()
+    const durable = await buildDurablePeriod({ range, label: 'p' }, { provider: 'all', exclude: ['/Users/gone/drop-me'] })
+
+    expect(durable.data.cost).toBeCloseTo(live.cost + KEEP.cost, 6)
+  })
+
+  it('keeps a project whose name is a prototype member (constructor) in the sliced total', async () => {
+    // A project directory can legitimately be named "constructor"/"valueOf"/etc.
+    // The day cache must carry it as an own key: if the load path drops it, the
+    // day's per-project split no longer sums to the day cost, and the sliced
+    // headline silently loses that project's spend.
+    const day = carriedDayWithProjects(daysAgoStr(10))
+    const protoName = 'constructor'
+    Object.defineProperty(day.projects!, protoName, {
+      value: { cost: 25, calls: 5, savingsUSD: 0, sessions: 1, path: '/Users/gone/constructor' },
+      enumerable: true, writable: true, configurable: true,
+    })
+    day.cost += 25
+    day.calls += 5
+    await seedCache(day)
+    await seedLiveTodaySession()
+    const range = coveringRange()
+
+    // Keep everything (exclude a non-matching term): the constructor project's
+    // $25 must be present alongside keep-me and drop-me.
+    const durable = await buildDurablePeriod({ range, label: 'p' }, { provider: 'all', exclude: ['zzz-nomatch'] })
+    const live = await liveOnly(range, [], ['zzz-nomatch'])
+    expect(durable.data.cost).toBeCloseTo(live.cost + DAY_COST + 25, 6)
+    expect(durable.unattributedCostUSD).toBe(0)
+  })
+
+  it('contributes nothing from a carried day whose every project is excluded', async () => {
+    await seedCache(carriedDayWithProjects(daysAgoStr(10)))
+    await seedLiveTodaySession()
+    const range = coveringRange()
+
+    const live = await liveOnly(range, [], ['keep-me', 'drop-me'])
+    clearSessionCache()
+    const durable = await buildDurablePeriod({ range, label: 'p' }, { provider: 'all', exclude: ['keep-me', 'drop-me'] })
+
+    expect(durable.data.cost).toBeCloseTo(live.cost, 6)
+    expect(durable.carriedCostUSD).toBe(0)
+  })
+
+  it('applies the project filter underneath a provider filter', async () => {
+    await seedCache(carriedDayWithProjects(daysAgoStr(10)))
+    await seedLiveTodaySession()
+    const range = coveringRange()
+
+    // Stated as the delta the filter must produce, so the assertion holds
+    // whatever the provider-scoped live parse contributes.
+    clearSessionCache()
+    const unfiltered = await buildDurablePeriod({ range, label: 'p' }, { provider: 'claude' })
+    clearSessionCache()
+    const filtered = await buildDurablePeriod({ range, label: 'p' }, { provider: 'claude', exclude: ['drop-me'] })
+
+    expect(unfiltered.data.cost - filtered.data.cost).toBeCloseTo(DROP.cost, 6)
+    expect(unfiltered.data.calls - filtered.data.calls).toBe(DROP.calls)
+  })
+
+  it('keeps the menubar payload in step with the report under a project filter', async () => {
+    await seedCache(carriedDayWithProjects(daysAgoStr(10)))
+    await seedLiveTodaySession()
+    const range = coveringRange()
+
+    clearSessionCache()
+    const menubar = await buildMenubarPayloadForRange({ range, label: 'p' }, { provider: 'all', exclude: ['drop-me'], optimize: false, timeline: false })
+    clearSessionCache()
+    const durable = await buildDurablePeriod({ range, label: 'p' }, { provider: 'all', exclude: ['drop-me'] })
+
+    // Both surfaces route the headline through the one shared builder, so a
+    // project filter must land on them identically.
+    expect(menubar.current.cost).toBe(durable.data.cost)
+    expect(menubar.current.calls).toBe(durable.data.calls)
+    expect(menubar.current.inputTokens).toBe(durable.data.inputTokens)
+  })
+
+  it('leaves the unfiltered headline exactly as it was', async () => {
+    await seedCache(carriedDayWithProjects(daysAgoStr(10)))
+    await seedLiveTodaySession()
+    const range = coveringRange()
+
+    const live = await liveOnly(range, [], [])
+    clearSessionCache()
+    const durable = await buildDurablePeriod({ range, label: 'p' }, { provider: 'all' })
+
+    expect(durable.data.cost).toBeCloseTo(live.cost + DAY_COST, 6)
+    expect(durable.data.calls).toBe(live.calls + DAY_CALLS)
+    expect(durable.carriedCostUSD).toBeCloseTo(DAY_COST, 6)
+  })
+})
+
+describe('carried days with no per-project split (pre-v15)', () => {
+  it('sets the unfilterable day aside instead of leaking it into a filtered headline', async () => {
+    await seedCache(carriedDayWithoutProjects(daysAgoStr(10)))
+    await seedLiveTodaySession()
+    const range = coveringRange()
+
+    const live = await liveOnly(range, [], ['drop-me'])
+    clearSessionCache()
+    const durable = await buildDurablePeriod({ range, label: 'p' }, { provider: 'all', exclude: ['drop-me'] })
+
+    // The day cannot be attributed to any project, so a project-filtered total
+    // cannot claim it. It is reported separately rather than silently folded in.
+    expect(durable.data.cost).toBeCloseTo(live.cost, 6)
+    expect(durable.unattributedCostUSD).toBeCloseTo(DAY_COST, 6)
+  })
+
+  it('reports a provider slice with no project split as unattributed too', async () => {
+    // A v14-era provider slice carried into a v15 day: the day knows its project
+    // split, that provider's slice does not. Under --provider the headline reads
+    // the slice, so the day drops out — say how much rather than lose it quietly.
+    const day = carriedDayWithProjects(daysAgoStr(10))
+    delete day.providers['claude']!.projects
+    await seedCache(day)
+    await seedLiveTodaySession()
+    const range = coveringRange()
+
+    clearSessionCache()
+    const durable = await buildDurablePeriod({ range, label: 'p' }, { provider: 'claude', exclude: ['drop-me'] })
+
+    expect(durable.unattributedCostUSD).toBeCloseTo(DAY_COST, 6)
+    expect(durable.carriedCostUSD).toBe(0)
+  })
+
+  it('says so in the overview instead of just showing a short total', async () => {
+    // Two cached days: one that cannot be attributed (the footnote's subject) and
+    // one that can. The attributable day keeps the headline non-zero from the
+    // CACHE alone, so the assertion tests the footnote rather than depending on
+    // the live parse to keep renderOverview off its "No usage found" path.
+    await seedCache(carriedDayWithoutProjects(daysAgoStr(10)), carriedDayWithProjects(daysAgoStr(5)))
+    await seedLiveTodaySession()
+    const range = coveringRange()
+
+    clearSessionCache()
+    const durable = await buildDurablePeriod({ range, label: 'This month' }, { provider: 'all', exclude: ['drop-me'] })
+    expect(durable.unattributedCostUSD).toBeGreaterThan(0)
+    expect(durable.data.cost).toBeGreaterThan(0)
+
+    const rendered = renderOverview(durable.liveProjects, {
+      label: 'This month',
+      color: false,
+      durable: {
+        cost: durable.data.cost,
+        savingsUSD: durable.data.savingsUSD,
+        calls: durable.data.calls,
+        sessions: durable.data.sessions,
+        inputTokens: durable.data.inputTokens,
+        outputTokens: durable.data.outputTokens,
+        cacheReadTokens: durable.data.cacheReadTokens,
+        cacheWriteTokens: durable.data.cacheWriteTokens,
+        days: durable.days,
+        carriedCostUSD: durable.carriedCostUSD,
+        unattributedCostUSD: durable.unattributedCostUSD,
+      },
+    })
+    expect(rendered).toContain('no per-project history')
+  })
+
+  it('still counts the day in full when no project filter is active', async () => {
+    await seedCache(carriedDayWithoutProjects(daysAgoStr(10)))
+    await seedLiveTodaySession()
+    const range = coveringRange()
+
+    const live = await liveOnly(range, [], [])
+    clearSessionCache()
+    const durable = await buildDurablePeriod({ range, label: 'p' }, { provider: 'all' })
+
+    expect(durable.data.cost).toBeCloseTo(live.cost + DAY_COST, 6)
+    expect(durable.unattributedCostUSD).toBe(0)
+  })
+})

tests/provider-turn-grouping.test.ts

@@ -98,6 +98,47 @@ describe('provider turn grouping', () => {
     expect(session.categoryBreakdown[turn.category].oneShotTurns).toBe(0)
   })
 
+  it('classifies a range-sliced turn from the whole turn, not the surviving calls (#852)', async () => {
+    const chatsDir = join(home, '.gemini', 'tmp', 'project-b', 'chats')
+    await mkdir(chatsDir, { recursive: true })
+    await writeFile(join(chatsDir, 'session-slice.json'), JSON.stringify({
+      sessionId: 'gemini-slice-1',
+      startTime: '2026-05-16T10:00:00.000Z',
+      messages: [
+        { id: 'u1', timestamp: '2026-05-16T10:00:00.000Z', type: 'user', content: 'read then edit src/parser.ts' },
+        {
+          id: 'g1', timestamp: '2026-05-16T10:00:00.000Z', type: 'gemini', content: 'reading',
+          model: 'gemini-3.1-pro-preview', tokens: { input: 100, output: 30 },
+          toolCalls: [{ id: 't1', name: 'read_file', args: { path: 'src/parser.ts' } }],
+        },
+        {
+          id: 'g2', timestamp: '2026-05-16T11:00:00.000Z', type: 'gemini', content: 'editing',
+          model: 'gemini-3.1-pro-preview', tokens: { input: 90, output: 25 },
+          toolCalls: [{ id: 't2', name: 'edit_file', args: { path: 'src/parser.ts' } }],
+        },
+      ],
+    }))
+
+    const parseAllSessions = await loadParser()
+    // A range that keeps the 10:00 Read call but excludes the 11:00 Edit call,
+    // so the turn is sliced. `turnSlicedToRange`/`callsInRange` compare absolute
+    // times, so this is timezone-independent.
+    const sliceRange: DateRange = {
+      start: new Date('2026-05-16T10:00:00.000Z'),
+      end: new Date('2026-05-16T10:30:00.000Z'),
+    }
+    const projects = await parseAllSessions(sliceRange, 'gemini')
+    const turn = projects[0]!.sessions[0]!.turns[0]!
+
+    // Cost/calls are sliced to the range: only the Read call survives.
+    expect(turn.assistantCalls.map(c => c.deduplicationKey)).toEqual(['gemini:gemini-slice-1:g1'])
+    // But category/hasEdits are whole-turn judgments — the Edit is part of the
+    // exchange — so they stay classified from the FULL turn, matching the Claude
+    // path rather than being re-derived from the partial slice (which alone reads
+    // as a no-edit exploration turn).
+    expect(turn.hasEdits).toBe(true)
+  })
+
   it('groups Mistral Vibe assistant messages and uses Vibe session_cost when present', async () => {
     const sessionDir = join(vibeHome, 'logs', 'session', 'session_20260516_100000_vibe')
     await mkdir(sessionDir, { recursive: true })
@@ -197,3 +238,46 @@ describe('provider turn grouping', () => {
     }
   })
 })
+
+describe('provider turn range filtering', () => {
+  it('keeps the in-range calls of a codex turn that spans midnight instead of dropping the whole turn', async () => {
+    // Regression test for #852: the range filter keyed on the turn's FIRST
+    // call timestamp, so a long autonomous turn starting 23:59 the previous
+    // day was excluded from the next day's view entirely, losing every
+    // post-midnight call. One turn (t1) here has two token_count events
+    // straddling midnight; only the post-midnight call may survive.
+    const codexHome = join(home, 'codex')
+    const sessionDir = join(codexHome, 'sessions', '2026', '05', '15')
+    await mkdir(sessionDir, { recursive: true })
+    const lines = [
+      JSON.stringify({ type: 'session_meta', timestamp: '2026-05-15T23:55:00Z', payload: { session_id: 'sess-span', model: 'gpt-5.5', cwd: '/Users/test/project-a', originator: 'codex_cli_rs' } }),
+      JSON.stringify({ type: 'response_item', timestamp: '2026-05-15T23:57:00Z', payload: { type: 'message', role: 'user', content: [{ type: 'input_text', text: 'run the long task' }] } }),
+      JSON.stringify({ type: 'response_item', timestamp: '2026-05-15T23:58:00Z', payload: { type: 'function_call', name: 'exec_command', arguments: JSON.stringify({ command: 'npm test' }) } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-05-15T23:59:00Z', payload: { type: 'token_count', info: { last_token_usage: { input_tokens: 100, output_tokens: 30 }, total_token_usage: { total_tokens: 130 } } } }),
+      JSON.stringify({ type: 'response_item', timestamp: '2026-05-16T00:10:00Z', payload: { type: 'function_call', name: 'exec_command', arguments: JSON.stringify({ command: 'npm run build' }) } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-05-16T00:15:00Z', payload: { type: 'token_count', info: { last_token_usage: { input_tokens: 80, output_tokens: 20 }, total_token_usage: { total_tokens: 230 } } } }),
+    ]
+    await writeFile(join(sessionDir, 'rollout-span.jsonl'), lines.join('\n') + '\n')
+
+    process.env['CODEX_HOME'] = codexHome
+    try {
+      const parseAllSessions = await loadParser()
+      const projects = await parseAllSessions(dayRange(), 'codex')
+      const session = projects[0]!.sessions[0]!
+      const turn = session.turns[0]!
+
+      expect(session.turns).toHaveLength(1)
+      expect(turn.assistantCalls.map(call => new Date(call.timestamp).toISOString())).toEqual([
+        '2026-05-16T00:15:00.000Z',
+      ])
+      // The slice re-anchors the turn's timestamp from the user-message time
+      // (2026-05-15T23:57Z) to the first surviving call, so turn-anchored
+      // bucketing lands the slice on the day its calls actually fall in.
+      expect(new Date(turn.timestamp).toISOString()).toBe('2026-05-16T00:15:00.000Z')
+      expect(session.totalInputTokens).toBe(80)
+      expect(session.totalOutputTokens).toBe(20)
+    } finally {
+      delete process.env['CODEX_HOME']
+    }
+  })
+})

tests/providers/codex.test.ts

@@ -160,6 +160,56 @@ describe('codex provider - session discovery', () => {
     }])
   })
 
+  it('deduplicates the same session_id across active and archived roots', async () => {
+    const sharedLines = [
+      sessionMeta({ cwd: '/Users/test/shared', session_id: 'sess-shared' }),
+      tokenCount({ last: { input: 100, output: 50 }, total: { total: 150 } }),
+    ]
+    const activePath = await writeSession(tmpDir, '2026-04-14', 'rollout-shared.jsonl', sharedLines)
+    const archivedCopyPath = await writeArchivedSession(tmpDir, 'rollout-shared.jsonl', sharedLines)
+    const distinctPath = await writeArchivedSession(tmpDir, 'rollout-distinct.jsonl', [
+      sessionMeta({ cwd: '/Users/test/distinct', session_id: 'sess-distinct' }),
+      tokenCount({ last: { input: 200, output: 50 }, total: { total: 250 } }),
+    ])
+
+    const provider = createCodexProvider(tmpDir)
+    const sessions = await provider.discoverSessions()
+    const paths = sessions.map(session => session.path)
+
+    expect(sessions).toHaveLength(2)
+    expect(paths).toEqual(expect.arrayContaining([activePath, distinctPath]))
+    expect(paths).not.toContain(archivedCopyPath)
+  })
+
+  it('does not double-count usage for an archived copy while counting distinct sessions', async () => {
+    const sharedLines = [
+      sessionMeta({ session_id: 'sess-shared' }),
+      tokenCount({ last: { input: 100, output: 50 }, total: { total: 150 } }),
+    ]
+    await writeSession(tmpDir, '2026-04-14', 'rollout-shared.jsonl', sharedLines)
+    await writeArchivedSession(tmpDir, 'rollout-shared-copy.jsonl', sharedLines)
+    await writeArchivedSession(tmpDir, 'rollout-distinct.jsonl', [
+      sessionMeta({ session_id: 'sess-distinct' }),
+      tokenCount({ last: { input: 200, output: 50 }, total: { total: 250 } }),
+    ])
+
+    const provider = createCodexProvider(tmpDir)
+    const sessions = await provider.discoverSessions()
+    const seenKeys = new Set<string>()
+    const calls: ParsedProviderCall[] = []
+    for (const session of sessions) {
+      for await (const call of provider.createSessionParser(session, seenKeys).parse()) {
+        calls.push(call)
+      }
+    }
+
+    expect(calls.map(call => call.sessionId).sort()).toEqual(['sess-distinct', 'sess-shared'])
+    expect(calls.reduce(
+      (total, call) => total + call.inputTokens + call.cachedInputTokens + call.outputTokens + call.reasoningTokens,
+      0,
+    )).toBe(400)
+  })
+
   it('returns empty for non-existent directory', async () => {
     const provider = createCodexProvider('/nonexistent/path/that/does/not/exist')
     const sessions = await provider.discoverSessions()
@@ -332,6 +382,89 @@ describe('codex provider - JSONL parsing', () => {
     expect(call.deduplicationKey).toContain('codex:')
   })
 
+  it('parses large rollout lines and computes active timing for custom tool calls', async () => {
+    const largeTokenLine = JSON.stringify({
+      type: 'event_msg',
+      timestamp: '2026-04-14T10:01:10Z',
+      payload: {
+        type: 'token_count',
+        info: {
+          last_token_usage: { input_tokens: 100, cached_input_tokens: 0, output_tokens: 100, reasoning_output_tokens: 20, total_tokens: 220 },
+          total_token_usage: { input_tokens: 100, cached_input_tokens: 0, output_tokens: 100, reasoning_output_tokens: 20, total_tokens: 220 },
+        },
+        rate_limits: { filler: 'x'.repeat(40_000) },
+      },
+    })
+    const largeCompleteLine = JSON.stringify({
+      type: 'event_msg',
+      timestamp: '2026-04-14T10:01:11Z',
+      payload: { type: 'task_complete', last_agent_message: 'x'.repeat(40_000), duration_ms: 10_000 },
+    })
+    const filePath = await writeSession(tmpDir, '2026-04-14', 'rollout-timing.jsonl', [
+      sessionMeta({ session_id: 'sess-timing', model: 'gpt-5.5' }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:00Z', payload: { type: 'task_started', turn_id: 'turn-1' } }),
+      userMessage('run the tool'),
+      JSON.stringify({ type: 'response_item', timestamp: '2026-04-14T10:00:02Z', payload: { type: 'custom_tool_call', call_id: 'call-1', name: 'exec' } }),
+      JSON.stringify({ type: 'response_item', timestamp: '2026-04-14T10:00:05Z', payload: { type: 'custom_tool_call_output', call_id: 'call-1', output: 'done' } }),
+      largeTokenLine,
+      largeCompleteLine,
+    ])
+
+    const provider = createCodexProvider(tmpDir)
+    const source = { path: filePath, project: 'test', provider: 'codex' }
+    const calls: ParsedProviderCall[] = []
+    for await (const call of provider.createSessionParser(source, new Set()).parse()) calls.push(call)
+
+    expect(calls).toHaveLength(1)
+    expect(calls[0]).toMatchObject({
+      outputTokens: 100,
+      reasoningTokens: 20,
+      tools: ['Bash'],
+      activeDurationMs: 7000,
+      activeGeneratedTokens: 120,
+      toolWaitMs: 3000,
+    })
+  })
+
+  it('keeps estimated output parsing for large token lines without usage info', async () => {
+    // Some rollout variants put token_count metadata beyond the compact head
+    // or omit `info` entirely. The line must still reach the character-based
+    // estimate path rather than being interpreted as an empty usage object.
+    const largeTokenLine = JSON.stringify({
+      type: 'event_msg',
+      timestamp: '2026-04-14T10:01:10Z',
+      payload: { type: 'token_count' },
+      filler: 'x'.repeat(40_000),
+    })
+    const assistantLine = JSON.stringify({
+      type: 'response_item',
+      timestamp: '2026-04-14T10:01:05Z',
+      payload: {
+        type: 'message',
+        role: 'assistant',
+        content: [{ type: 'output_text', text: 'generated response '.repeat(100) }],
+      },
+    })
+    const filePath = await writeSession(tmpDir, '2026-04-14', 'rollout-estimated-large.jsonl', [
+      sessionMeta({ session_id: 'sess-estimated-large', model: 'gpt-5.5' }),
+      userMessage('summarize the result'),
+      assistantLine,
+      largeTokenLine,
+    ])
+
+    const provider = createCodexProvider(tmpDir)
+    const source = { path: filePath, project: 'test', provider: 'codex' }
+    const calls: ParsedProviderCall[] = []
+    for await (const call of provider.createSessionParser(source, new Set()).parse()) calls.push(call)
+
+    expect(calls).toHaveLength(1)
+    expect(calls[0]).toMatchObject({
+      model: 'gpt-5.5',
+      costIsEstimated: true,
+    })
+    expect(calls[0]!.outputTokens).toBeGreaterThan(0)
+  })
+
   it('attributes MCP calls emitted as event_msg/mcp_tool_call_end', async () => {
     const filePath = await writeSession(tmpDir, '2026-04-14', 'rollout-mcp.jsonl', [
       sessionMeta({ session_id: 'sess-mcp', model: 'gpt-5.5' }),
@@ -356,6 +489,154 @@ describe('codex provider - JSONL parsing', () => {
     expect(calls[0]!.tools).toEqual(['mcp__github__get_issue'])
   })
 
+  it('subtracts native MCP wait time from active timing', async () => {
+    const filePath = await writeSession(tmpDir, '2026-04-14', 'rollout-mcp-timing.jsonl', [
+      sessionMeta({ session_id: 'sess-mcp-timing', model: 'gpt-5.5' }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:00Z', payload: { type: 'task_started' } }),
+      userMessage('look up the issue'),
+      JSON.stringify({
+        type: 'event_msg',
+        timestamp: '2026-04-14T10:00:05Z',
+        payload: {
+          type: 'mcp_tool_call_end',
+          call_id: 'mcp-1',
+          invocation: { server: 'github', tool: 'get_issue', arguments: {} },
+          duration: { secs: 3, nanos: 0 },
+        },
+      }),
+      tokenCount({
+        timestamp: '2026-04-14T10:00:08Z',
+        last: { input: 300, output: 100 },
+        total: { total: 400 },
+      }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:10Z', payload: { type: 'task_complete', duration_ms: 10_000 } }),
+    ])
+
+    const provider = createCodexProvider(tmpDir)
+    const source = { path: filePath, project: 'test', provider: 'codex' }
+    const calls: ParsedProviderCall[] = []
+    for await (const call of provider.createSessionParser(source, new Set()).parse()) calls.push(call)
+
+    expect(calls).toHaveLength(1)
+    expect(calls[0]).toMatchObject({ activeDurationMs: 7000, toolWaitMs: 3000 })
+  })
+
+  it('keeps MCP attribution on large result lines', async () => {
+    const largeMcpLine = JSON.stringify({
+      type: 'event_msg',
+      timestamp: '2026-04-14T10:00:05Z',
+      payload: {
+        type: 'mcp_tool_call_end',
+        call_id: 'mcp-large',
+        invocation: { server: 'github', tool: 'get_issue', arguments: { duration: '1s', body: 'x'.repeat(100_000) } },
+        duration: { secs: 3, nanos: 0 },
+        result: { Ok: { content: [{ type: 'text', text: 'x'.repeat(40_000) }] } },
+      },
+    })
+    const filePath = await writeSession(tmpDir, '2026-04-14', 'rollout-mcp-large.jsonl', [
+      sessionMeta({ session_id: 'sess-mcp-large', model: 'gpt-5.5' }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:00Z', payload: { type: 'task_started' } }),
+      userMessage('look up the issue'),
+      largeMcpLine,
+      tokenCount({ timestamp: '2026-04-14T10:00:08Z', last: { input: 300, output: 100 }, total: { total: 400 } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:10Z', payload: { type: 'task_complete', duration_ms: 10_000 } }),
+    ])
+
+    const provider = createCodexProvider(tmpDir)
+    const source = { path: filePath, project: 'test', provider: 'codex' }
+    const calls: ParsedProviderCall[] = []
+    for await (const call of provider.createSessionParser(source, new Set()).parse()) calls.push(call)
+
+    expect(calls).toHaveLength(1)
+    expect(calls[0]).toMatchObject({ tools: ['mcp__github__get_issue'], activeDurationMs: 7000, toolWaitMs: 3000 })
+  })
+
+  it('prefers payload-level duration over a nested duration_ms in large mcp_tool_call_end lines', async () => {
+    // Regression guard: a naive first-match regex would pick up the
+    // `duration_ms: 9999` inside invocation.arguments instead of the payload-level
+    // `duration: { secs: 3 }`. The depth-aware payload scan must win.
+    const largeMcpLine = JSON.stringify({
+      type: 'event_msg',
+      timestamp: '2026-04-14T10:00:05Z',
+      payload: {
+        type: 'mcp_tool_call_end',
+        call_id: 'mcp-duration-collision',
+        invocation: { server: 'github', tool: 'get_issue', arguments: { duration_ms: 9999, body: 'x'.repeat(40_000) } },
+        duration: { secs: 3, nanos: 0 },
+        result: { Ok: { content: [{ type: 'text', text: 'x'.repeat(40_000) }] } },
+      },
+    })
+    const filePath = await writeSession(tmpDir, '2026-04-14', 'rollout-mcp-duration-collision.jsonl', [
+      sessionMeta({ session_id: 'sess-mcp-duration-collision', model: 'gpt-5.5' }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:00Z', payload: { type: 'task_started' } }),
+      userMessage('look up the issue'),
+      largeMcpLine,
+      tokenCount({ timestamp: '2026-04-14T10:00:08Z', last: { input: 300, output: 100 }, total: { total: 400 } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:10Z', payload: { type: 'task_complete', duration_ms: 10_000 } }),
+    ])
+
+    const provider = createCodexProvider(tmpDir)
+    const source = { path: filePath, project: 'test', provider: 'codex' }
+    const calls: ParsedProviderCall[] = []
+    for await (const call of provider.createSessionParser(source, new Set()).parse()) calls.push(call)
+
+    expect(calls).toHaveLength(1)
+    expect(calls[0]).toMatchObject({ tools: ['mcp__github__get_issue'], activeDurationMs: 7000, toolWaitMs: 3000 })
+  })
+
+  it('attributes a task_complete over everything since the last task_started, even across a suppressed one', async () => {
+    // A mid-file session_meta carrying forked_from_id re-arms the fork-replay
+    // cutoff, which swallows the task_started right behind it while its
+    // task_complete lands past the cutoff. Attribution then has to span both
+    // turns, exactly as it did before calls were buffered per task.
+    const filePath = await writeSession(tmpDir, '2026-04-14', 'rollout-suppressed-task-start.jsonl', [
+      sessionMeta({ session_id: 'sess-suppressed-start', model: 'gpt-5.5' }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:00Z', payload: { type: 'task_started' } }),
+      userMessage('first ask'),
+      tokenCount({ timestamp: '2026-04-14T10:00:05Z', last: { input: 300, output: 100 }, total: { total: 400 } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:10Z', payload: { type: 'task_complete', duration_ms: 10_000 } }),
+      sessionMeta({ timestamp: '2026-04-14T10:00:11Z', session_id: 'sess-suppressed-start', model: 'gpt-5.5', forked_from_id: 'sess-parent' }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:12Z', payload: { type: 'task_started' } }),
+      userMessage('second ask', '2026-04-14T10:00:18Z'),
+      tokenCount({ timestamp: '2026-04-14T10:00:20Z', last: { input: 300, output: 300 }, total: { total: 1000 } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:25Z', payload: { type: 'task_complete', duration_ms: 5_000 } }),
+    ])
+
+    const provider = createCodexProvider(tmpDir)
+    const source = { path: filePath, project: 'test', provider: 'codex' }
+    const calls: ParsedProviderCall[] = []
+    for await (const call of provider.createSessionParser(source, new Set()).parse()) calls.push(call)
+
+    expect(calls).toHaveLength(2)
+    // The second task_complete re-attributes the first turn too, so the 5s
+    // window is split across both by generated tokens rather than leaving the
+    // first turn pinned to its own 10s window.
+    expect(calls[0]!.activeDurationMs).toBeCloseTo(1250, 6)
+    expect(calls[1]!.activeDurationMs).toBeCloseTo(3750, 6)
+    expect(calls[0]!.activeDurationMs! + calls[1]!.activeDurationMs!).toBeCloseTo(5000, 6)
+  })
+
+  it('omits active timing when recorded tool wait consumes the task duration', async () => {
+    const filePath = await writeSession(tmpDir, '2026-04-14', 'rollout-degenerate-timing.jsonl', [
+      sessionMeta({ session_id: 'sess-degenerate-timing', model: 'gpt-5.5' }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:00Z', payload: { type: 'task_started' } }),
+      userMessage('wait for the tool'),
+      JSON.stringify({ type: 'response_item', timestamp: '2026-04-14T10:00:00Z', payload: { type: 'custom_tool_call', call_id: 'call-1', name: 'exec' } }),
+      JSON.stringify({ type: 'response_item', timestamp: '2026-04-14T10:00:10Z', payload: { type: 'custom_tool_call_output', call_id: 'call-1', output: 'done' } }),
+      tokenCount({ timestamp: '2026-04-14T10:00:12Z', last: { input: 300, output: 100 }, total: { total: 400 } }),
+      JSON.stringify({ type: 'event_msg', timestamp: '2026-04-14T10:00:13Z', payload: { type: 'task_complete', duration_ms: 10_000 } }),
+    ])
+
+    const provider = createCodexProvider(tmpDir)
+    const source = { path: filePath, project: 'test', provider: 'codex' }
+    const calls: ParsedProviderCall[] = []
+    for await (const call of provider.createSessionParser(source, new Set()).parse()) calls.push(call)
+
+    expect(calls).toHaveLength(1)
+    expect(calls[0]!.activeDurationMs).toBeUndefined()
+    expect(calls[0]!.toolWaitMs).toBeUndefined()
+  })
+
   it('attributes CLI-wrapped MCP calls (mcp-cli call server tool) to MCP + Bash', async () => {
     const execStr = (command: string) => JSON.stringify({
       type: 'response_item',

tests/sync-attribution-cli.test.ts

@@ -0,0 +1,157 @@
+/**
+ * CLI-level tests for `codeburn sync push --attribution`.
+ *
+ * Drives the real commander action against a mock IdP + collector:
+ * - --dry-run --attribution: NO telemetry reaches the traces endpoint
+ * - push WITHOUT the flag: no attribution span names on the wire
+ * - push WITH the flag: attribution spans arrive alongside usage spans
+ */
+
+import { execFileSync } from 'node:child_process'
+import { mkdtemp, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+
+import { describe, it, expect, beforeAll, afterAll, beforeEach, afterEach, vi } from 'vitest'
+import { Command } from 'commander'
+
+import { startMockIdp, type MockIdp } from './fixtures/mock-idp.js'
+import type { ProjectSummary, SessionSummary, ParsedApiCall, TokenUsage } from '../src/types.js'
+
+const { parseAllSessionsMock } = vi.hoisted(() => ({ parseAllSessionsMock: vi.fn() }))
+vi.mock('../src/parser.js', () => ({ parseAllSessions: parseAllSessionsMock }))
+
+function git(cwd: string, args: string[], env: Record<string, string> = {}): string {
+  return execFileSync('git', args, { cwd, encoding: 'utf-8', env: { ...process.env, ...env } }).trim()
+}
+
+function makeUsage(): TokenUsage {
+  return { inputTokens: 10, outputTokens: 5, cacheCreationInputTokens: 0, cacheReadInputTokens: 0, cachedInputTokens: 0, reasoningTokens: 0, webSearchRequests: 0 }
+}
+
+function makeCall(key: string, ts: string): ParsedApiCall {
+  return {
+    provider: 'test', model: 'test-model', usage: makeUsage(), costUSD: 0.01,
+    tools: [], mcpTools: [], skills: [], subagentTypes: [], hasAgentSpawn: false,
+    hasPlanMode: false, speed: 'standard', timestamp: ts, bashCommands: [],
+    deduplicationKey: key,
+  }
+}
+
+function makeSession(id: string, first: string, last: string, calls: ParsedApiCall[]): SessionSummary {
+  return {
+    sessionId: id, project: 'app', firstTimestamp: first, lastTimestamp: last,
+    totalCostUSD: 0.01, totalSavingsUSD: 0, totalInputTokens: 10, totalOutputTokens: 5,
+    totalReasoningTokens: 0, totalCacheReadTokens: 0, totalCacheWriteTokens: 0,
+    apiCalls: calls.length,
+    turns: [{ userMessage: 'x', assistantCalls: calls, timestamp: first, sessionId: id, category: 'coding', retries: 0, hasEdits: false }],
+    modelBreakdown: {}, toolBreakdown: {}, mcpBreakdown: {}, bashBreakdown: {},
+    categoryBreakdown: {} as SessionSummary['categoryBreakdown'], skillBreakdown: {}, subagentBreakdown: {},
+  }
+}
+
+let idp: MockIdp
+let tmpHome: string
+let repoDir: string
+const originalHome = process.env.HOME
+const originalXdg = process.env.XDG_CACHE_HOME
+const originalStore = process.env.CODEBURN_SYNC_TOKEN_STORE
+
+async function runPush(args: string[]): Promise<void> {
+  const { registerSyncCommands } = await import('../src/sync/cli.js')
+  const program = new Command()
+  program.exitOverride() // throw instead of process.exit on commander errors
+  registerSyncCommands(program)
+  await program.parseAsync(['node', 'codeburn', 'sync', 'push', ...args])
+}
+
+beforeAll(async () => {
+  idp = await startMockIdp({ rotateTokens: false })
+  process.env.CODEBURN_SYNC_TOKEN_STORE = 'file'
+
+  // Real git repo with a remote — a recent commit inside the session window
+  repoDir = await mkdtemp(join(tmpdir(), 'codeburn-attr-cli-repo-'))
+  git(repoDir, ['init', '-b', 'main'])
+  git(repoDir, ['config', 'user.email', 't@e.com'])
+  git(repoDir, ['config', 'user.name', 'T'])
+  git(repoDir, ['remote', 'add', 'origin', 'git@github.com:acme/cli-widget.git'])
+  await writeFile(join(repoDir, 'f.txt'), 'x\n')
+  const commitIso = new Date(Date.now() - 60 * 60 * 1000).toISOString()
+  git(repoDir, ['add', '.'])
+  git(repoDir, ['commit', '-m', 'feat: recent'], { GIT_AUTHOR_DATE: commitIso, GIT_COMMITTER_DATE: commitIso })
+})
+
+afterAll(async () => {
+  await idp.close()
+  await rm(repoDir, { recursive: true, force: true })
+  if (originalStore === undefined) delete process.env.CODEBURN_SYNC_TOKEN_STORE
+  else process.env.CODEBURN_SYNC_TOKEN_STORE = originalStore
+})
+
+beforeEach(async () => {
+  tmpHome = await mkdtemp(join(tmpdir(), 'codeburn-attr-cli-'))
+  process.env.HOME = tmpHome
+  process.env.XDG_CACHE_HOME = join(tmpHome, '.cache')
+  idp.tracesRequests.length = 0
+
+  // Configure sync against the mock IdP + store the refresh token
+  const { writeSyncConfig } = await import('../src/sync/config.js')
+  const { createCredentialStore } = await import('../src/sync/credentials.js')
+  writeSyncConfig({ baseUrl: idp.baseUrl, clientId: 'mock-client-id', tracesPath: '/v1/traces', issuer: idp.baseUrl })
+  createCredentialStore().store('mock-refresh-token-v1')
+
+  // One session in the last hour, working in the real repo
+  const now = Date.now()
+  const first = new Date(now - 90 * 60 * 1000).toISOString()
+  const last = new Date(now - 30 * 60 * 1000).toISOString()
+  const session = makeSession('cli-sess-1', first, last, [makeCall(`call-${now}`, first)])
+  parseAllSessionsMock.mockResolvedValue([
+    { project: 'app', projectPath: repoDir, sessions: [session] } as ProjectSummary,
+  ])
+
+  // The push action reads process.cwd() for the attribution cwd — run from
+  // a neutral non-repo dir so nothing can come from a cwd fallback.
+  vi.spyOn(process, 'cwd').mockReturnValue(tmpHome)
+})
+
+afterEach(async () => {
+  vi.restoreAllMocks()
+  process.exitCode = 0
+  process.env.HOME = originalHome
+  if (originalXdg === undefined) delete process.env.XDG_CACHE_HOME
+  else process.env.XDG_CACHE_HOME = originalXdg
+  await rm(tmpHome, { recursive: true, force: true })
+})
+
+const spanNames = (): string[] =>
+  idp.tracesRequests.flatMap(r => {
+    const body = r.body as { resourceSpans?: Array<{ scopeSpans: Array<{ spans: Array<{ name: string }> }> }> }
+    return (body.resourceSpans ?? []).flatMap(rs => rs.scopeSpans.flatMap(ss => ss.spans.map(s => s.name)))
+  })
+
+describe('sync push --attribution (CLI level)', () => {
+  it('--dry-run --attribution sends nothing to the traces endpoint', async () => {
+    await runPush(['--dry-run', '--attribution'])
+    expect(idp.tracesRequests).toHaveLength(0)
+  })
+
+  it('push WITHOUT --attribution never emits attribution span names', async () => {
+    await runPush([])
+    expect(idp.tracesRequests.length).toBeGreaterThan(0)
+    const names = spanNames()
+    expect(names.length).toBeGreaterThan(0)
+    expect(names).not.toContain('codeburn.session.attribution')
+    expect(names).not.toContain('codeburn.commit')
+    expect(JSON.stringify(idp.tracesRequests)).not.toContain('git.sha')
+  })
+
+  it('push WITH --attribution emits usage + attribution spans', async () => {
+    await runPush(['--attribution'])
+    const names = spanNames()
+    expect(names).toContain('test/test-model')                // usage span
+    expect(names).toContain('codeburn.session.attribution')   // session span
+    expect(names).toContain('codeburn.commit')                // commit span
+    const wire = JSON.stringify(idp.tracesRequests)
+    expect(wire).toContain('github.com/acme/cli-widget')
+  })
+})

tests/sync-attribution.test.ts

@@ -0,0 +1,753 @@
+/**
+ * Tests for sync git attribution (sync push --attribution).
+ *
+ * Covers: remote URL normalization, session→commit attribution record
+ * computation (reusing the yield engine), state-encoding dedup keys,
+ * attribution OTLP span construction, and the send/ledger pipeline.
+ */
+
+import { execFileSync } from 'node:child_process'
+import { mkdtemp, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { createServer, type Server } from 'node:http'
+
+import { describe, it, expect, beforeEach, afterEach } from 'vitest'
+
+import type { ProjectSummary, SessionSummary } from '../src/types.js'
+import {
+  normalizeRemoteUrl,
+  computeAttributionRecords,
+  sanitizePrLinks,
+  MAX_PR_LINKS_PER_SESSION,
+  type SessionAttributionRecord,
+} from '../src/yield.js'
+import {
+  flattenAttributionRecords,
+  commitAttributionKey,
+  sessionAttributionKey,
+  buildAttributionOtlpPayload,
+  batchAttributionItems,
+  deriveTraceId,
+  SESSION_ATTRIBUTION_SPAN_NAME,
+  COMMIT_ATTRIBUTION_SPAN_NAME,
+  type OtlpAttribute,
+} from '../src/sync/otlp.js'
+
+// ── Git fixtures (mirrors yield-repo-grouping.test.ts) ────────────────
+
+function git(cwd: string, args: string[], env: Record<string, string> = {}): string {
+  return execFileSync('git', args, {
+    cwd,
+    encoding: 'utf-8',
+    env: { ...process.env, ...env },
+  }).trim()
+}
+
+function initRepo(dir: string): void {
+  git(dir, ['init', '-b', 'main'])
+  git(dir, ['config', 'user.email', 'test@example.com'])
+  git(dir, ['config', 'user.name', 'Test'])
+}
+
+function commitAt(dir: string, message: string, iso: string): void {
+  git(dir, ['add', '.'])
+  git(dir, ['commit', '-m', message], {
+    GIT_AUTHOR_DATE: iso,
+    GIT_COMMITTER_DATE: iso,
+  })
+}
+
+function makeSession(overrides: Partial<SessionSummary>): SessionSummary {
+  return {
+    sessionId: 'session',
+    project: 'app',
+    firstTimestamp: '2026-01-01T10:00:00.000Z',
+    lastTimestamp: '2026-01-01T11:00:00.000Z',
+    totalCostUSD: 1,
+    totalSavingsUSD: 0,
+    totalInputTokens: 0,
+    totalOutputTokens: 0,
+    totalReasoningTokens: 0,
+    totalCacheReadTokens: 0,
+    totalCacheWriteTokens: 0,
+    apiCalls: 1,
+    turns: [],
+    modelBreakdown: {},
+    toolBreakdown: {},
+    mcpBreakdown: {},
+    bashBreakdown: {},
+    categoryBreakdown: {} as SessionSummary['categoryBreakdown'],
+    skillBreakdown: {},
+    subagentBreakdown: {},
+    ...overrides,
+  }
+}
+
+const range = {
+  start: new Date('2026-01-01T00:00:00.000Z'),
+  end: new Date('2026-01-02T00:00:00.000Z'),
+}
+
+// ── normalizeRemoteUrl ────────────────────────────────────────────────
+
+describe('normalizeRemoteUrl', () => {
+  it('normalizes scp-like ssh remotes', () => {
+    expect(normalizeRemoteUrl('git@github.com:acme/widget.git')).toBe('github.com/acme/widget')
+    expect(normalizeRemoteUrl('git@GitHub.com:Acme/Widget')).toBe('github.com/Acme/Widget')
+  })
+
+  it('normalizes ssh:// remotes, dropping user and port', () => {
+    expect(normalizeRemoteUrl('ssh://git@github.com/acme/widget.git')).toBe('github.com/acme/widget')
+    expect(normalizeRemoteUrl('ssh://git@gitlab.example.com:2222/group/sub/repo.git')).toBe('gitlab.example.com/group/sub/repo')
+  })
+
+  it('normalizes https remotes and strips embedded credentials', () => {
+    expect(normalizeRemoteUrl('https://github.com/acme/widget.git')).toBe('github.com/acme/widget')
+    expect(normalizeRemoteUrl('https://user:s3cret-token@github.com/acme/widget.git')).toBe('github.com/acme/widget')
+    expect(normalizeRemoteUrl('https://github.com/acme/widget/')).toBe('github.com/acme/widget')
+  })
+
+  it('returns null for local paths and file:// remotes', () => {
+    expect(normalizeRemoteUrl('/home/dev/repos/widget')).toBeNull()
+    expect(normalizeRemoteUrl('file:///home/dev/repos/widget')).toBeNull()
+    expect(normalizeRemoteUrl('../relative/repo')).toBeNull()
+    expect(normalizeRemoteUrl('')).toBeNull()
+  })
+
+  it('rejects Windows drive-letter paths (never a remote identity)', () => {
+    expect(normalizeRemoteUrl('C:/Users/alice/private/repo')).toBeNull()
+    expect(normalizeRemoteUrl('C:\\Users\\alice\\private\\repo')).toBeNull()
+    expect(normalizeRemoteUrl('c:/repo')).toBeNull()
+    expect(normalizeRemoteUrl('Z:\\work\\nda-client-repo')).toBeNull()
+    // Drive-relative (no slash after colon) — single-char host rejection
+    expect(normalizeRemoteUrl('C:repo')).toBeNull()
+    expect(normalizeRemoteUrl('c:relative\\path')).toBeNull()
+  })
+
+  it('rejects other adversarial forms without over-rejecting real remotes', () => {
+    // Single-character "host" is never a real remote host
+    expect(normalizeRemoteUrl('a:path/to/repo')).toBeNull()
+    expect(normalizeRemoteUrl('git@C:/foo')).toBeNull()
+    // Dotless intranet hosts remain valid (2+ chars)
+    expect(normalizeRemoteUrl('gitserver:team/repo.git')).toBe('gitserver/team/repo')
+    expect(normalizeRemoteUrl('git@gitbox:org/repo.git')).toBe('gitbox/org/repo')
+  })
+
+  it('never leaks credentials via scp-branch backtracking on malformed remotes', () => {
+    // Credential-prefixed remotes: the userinfo split happens BEFORE host
+    // matching, so a token can never be re-parsed as host:path.
+    expect(normalizeRemoteUrl('x-access-token:ghp_LIVETOKEN_abcdefghijklmnop@github.com/acme/private-repo.git')).toBeNull()
+    expect(normalizeRemoteUrl('oauth2:glpat-TOKEN@gitlab.com/org/repo.git')).toBeNull()
+    // One dropped slash: not a URL, must not fall through as host "https"
+    expect(normalizeRemoteUrl('https:/user:ghp_TOKEN@github.com/org/repo.git')).toBeNull()
+    // Multiple @: split at the first, residual @ fails the allow-list
+    expect(normalizeRemoteUrl('a@b@github.com:org/repo.git')).toBeNull()
+    expect(normalizeRemoteUrl('user@host:path@with-at')).toBeNull()
+  })
+
+  it('rejects transport-helper remotes and enforces shape + length on the identity', () => {
+    // git-remote-ext: embeds a local SSH key path
+    expect(normalizeRemoteUrl('ext::ssh -i /Users/me/.ssh/id_ed25519_work git@github.com %S /acme/private.git')).toBeNull()
+    expect(normalizeRemoteUrl('ext::sh -c whatever')).toBeNull()
+    // git-remote-codecommit: embeds an AWS profile name
+    expect(normalizeRemoteUrl('codecommit::us-east-1://MyAwsProfile@MyRepo')).toBeNull()
+    expect(normalizeRemoteUrl('codecommit::us-east-1://MyRepo')).toBeNull()
+    // Length bound
+    expect(normalizeRemoteUrl(`git@github.com:org/${'a'.repeat(300)}.git`)).toBeNull()
+    // Path segments must be repo-shaped (no spaces, colons, @)
+    expect(normalizeRemoteUrl('gitserver:has space/repo.git')).toBeNull()
+    // Legit multi-segment (GitLab subgroup) paths survive the allow-list
+    expect(normalizeRemoteUrl('https://gitlab.example.com/group/sub/repo.git')).toBe('gitlab.example.com/group/sub/repo')
+  })
+
+  it('normalizes .GIT case-insensitively and collapses doubled slashes to one join key', () => {
+    expect(normalizeRemoteUrl('git@github.com:acme/Repo.GIT')).toBe('github.com/acme/Repo')
+    expect(normalizeRemoteUrl('https://github.com/acme/Repo.Git')).toBe('github.com/acme/Repo')
+    expect(normalizeRemoteUrl('https://github.com/acme//repo.git')).toBe('github.com/acme/repo')
+    expect(normalizeRemoteUrl('git@github.com:acme//repo.git')).toBe('github.com/acme/repo')
+  })
+})
+
+// ── computeAttributionRecords ─────────────────────────────────────────
+
+describe('computeAttributionRecords', () => {
+  it('attributes commits with normalized remote, inMain, and timestamps', async () => {
+    const repoDir = await mkdtemp(join(tmpdir(), 'codeburn-attr-repo-'))
+    try {
+      initRepo(repoDir)
+      git(repoDir, ['remote', 'add', 'origin', 'git@github.com:acme/widget.git'])
+      await writeFile(join(repoDir, 'file.txt'), 'hello\n')
+      commitAt(repoDir, 'feat: shipped', '2026-01-01T10:30:00Z')
+      const sha = git(repoDir, ['rev-parse', 'HEAD'])
+
+      const session = makeSession({
+        sessionId: 'sess-a',
+        prLinks: ['https://github.com/acme/widget/pull/12'],
+      })
+      const projects = [
+        { project: 'app', projectPath: repoDir, sessions: [session] } as ProjectSummary,
+      ]
+
+      const records = computeAttributionRecords(projects, range, repoDir)
+
+      expect(records).toHaveLength(1)
+      const record = records[0]!
+      expect(record.sessionId).toBe('sess-a')
+      expect(record.repo).toBe('github.com/acme/widget')
+      expect(record.prLinks).toEqual(['https://github.com/acme/widget/pull/12'])
+      expect(record.commits).toHaveLength(1)
+      expect(record.commits[0]).toMatchObject({ sha, inMain: true, wasReverted: false })
+      expect(new Date(record.commits[0]!.timestamp).toISOString()).toBe('2026-01-01T10:30:00.000Z')
+      expect(record.firstTimestamp).toBe('2026-01-01T10:00:00.000Z')
+      expect(record.lastTimestamp).toBe('2026-01-01T11:00:00.000Z')
+    } finally {
+      await rm(repoDir, { recursive: true, force: true })
+    }
+  })
+
+  it('omits empty sessions that lost nothing — commits aged out of range are NOT retracted', async () => {
+    const repoDir = await mkdtemp(join(tmpdir(), 'codeburn-attr-empty-'))
+    try {
+      initRepo(repoDir)
+      git(repoDir, ['remote', 'add', 'origin', 'git@github.com:acme/widget.git'])
+      await writeFile(join(repoDir, 'file.txt'), 'hello\n')
+      // Commit outside every session window: no session competes for it, so
+      // nobody "lost" it. Even if this session previously synced a commit
+      // (now outside the --since range), emitting an empty record here would
+      // permanently zero a still-correct server-side count.
+      commitAt(repoDir, 'feat: unrelated', '2026-01-01T20:00:00Z')
+
+      const session = makeSession({ sessionId: 'sess-idle' })
+      const projects = [
+        { project: 'app', projectPath: repoDir, sessions: [session] } as ProjectSummary,
+      ]
+
+      expect(computeAttributionRecords(projects, range, repoDir)).toEqual([])
+
+      // …and therefore nothing can be sent, even with prior ledger state for
+      // this session (simulating an earlier wider---since push).
+      const { writeLedger } = await import('../src/sync/ledger.js')
+      writeLedger([{ key: 'attr:s:sess-idle:0123456789abcdef', ts: '2026-01-01T10:00:00.000Z' }])
+      const { collectUnsentAttribution } = await import('../src/sync/push.js')
+      expect(collectUnsentAttribution(computeAttributionRecords(projects, range, repoDir)).unsent).toEqual([])
+    } finally {
+      await rm(repoDir, { recursive: true, force: true })
+    }
+  })
+
+  it('emits a retraction candidate for a session that lost its commit to a tighter window', async () => {
+    const repoDir = await mkdtemp(join(tmpdir(), 'codeburn-attr-lost-'))
+    try {
+      initRepo(repoDir)
+      git(repoDir, ['remote', 'add', 'origin', 'git@github.com:acme/widget.git'])
+      await writeFile(join(repoDir, 'file.txt'), 'hello\n')
+      commitAt(repoDir, 'feat: contested', '2026-01-01T10:30:00Z')
+
+      const tight = makeSession({
+        sessionId: 'sess-tight',
+        firstTimestamp: '2026-01-01T10:15:00.000Z',
+        lastTimestamp: '2026-01-01T10:45:00.000Z',
+      })
+      const broadLoser = makeSession({ sessionId: 'sess-broad-loser' })
+      const projects = [
+        { project: 'app', projectPath: repoDir, sessions: [tight, broadLoser] } as ProjectSummary,
+      ]
+
+      const records = computeAttributionRecords(projects, range, repoDir)
+      const loser = records.find(r => r.sessionId === 'sess-broad-loser')!
+      // The loser IS emitted (retraction candidate: lostCandidacy) with zero
+      // commits — the sync layer decides whether a prior state warrants
+      // actually sending it.
+      expect(loser).toBeDefined()
+      expect(loser.commits).toEqual([])
+      expect(loser.repo).toBe('github.com/acme/widget')
+    } finally {
+      await rm(repoDir, { recursive: true, force: true })
+    }
+  })
+
+  it('drops commits when the repo has no remote, but keeps PR-linked sessions', async () => {
+    const repoDir = await mkdtemp(join(tmpdir(), 'codeburn-attr-noremote-'))
+    try {
+      initRepo(repoDir) // no origin remote
+      await writeFile(join(repoDir, 'file.txt'), 'hello\n')
+      commitAt(repoDir, 'feat: local only', '2026-01-01T10:30:00Z')
+
+      const withPr = makeSession({
+        sessionId: 'sess-pr',
+        prLinks: ['https://github.com/acme/widget/pull/7'],
+        firstTimestamp: '2026-01-01T10:15:00.000Z',
+        lastTimestamp: '2026-01-01T10:45:00.000Z',
+      })
+      const withoutPr = makeSession({ sessionId: 'sess-nopr' })
+      const projects = [
+        { project: 'app', projectPath: repoDir, sessions: [withPr, withoutPr] } as ProjectSummary,
+      ]
+
+      const records = computeAttributionRecords(projects, range, repoDir)
+
+      // sess-pr wins the commit window but has no repo identity, so commits
+      // are dropped; the PR link alone justifies the record. sess-nopr has
+      // nothing joinable and is omitted.
+      expect(records).toHaveLength(1)
+      expect(records[0]!.sessionId).toBe('sess-pr')
+      expect(records[0]!.repo).toBeNull()
+      expect(records[0]!.commits).toEqual([])
+      expect(records[0]!.prLinks).toEqual(['https://github.com/acme/widget/pull/7'])
+    } finally {
+      await rm(repoDir, { recursive: true, force: true })
+    }
+  })
+
+  it('never egresses the cwd repo for sessions whose project path did not resolve (fallback)', async () => {
+    // The reviewer's repro: push from inside a private repo while a session's
+    // project path no longer resolves. The fallback identity must NOT leak
+    // the cwd repo's remote or commits into that session's attribution.
+    const cwdRepo = await mkdtemp(join(tmpdir(), 'codeburn-attr-privatecwd-'))
+    try {
+      initRepo(cwdRepo)
+      git(cwdRepo, ['remote', 'add', 'origin', 'git@github.com:secret-org/nda-client-repo.git'])
+      await writeFile(join(cwdRepo, 'file.txt'), 'confidential\n')
+      commitAt(cwdRepo, 'feat: private work', '2026-01-01T10:30:00Z')
+
+      // Session A: project path is gone (deleted dir) — falls back to cwd
+      const orphanNoPr = makeSession({ sessionId: 'orphan-nopr', ...{ firstTimestamp: '2026-01-01T10:15:00.000Z', lastTimestamp: '2026-01-01T10:45:00.000Z' } })
+      // Session B: also fallback, but carries a PR link (session-native, safe)
+      const orphanWithPr = makeSession({
+        sessionId: 'orphan-pr',
+        prLinks: ['https://github.com/acme/widget/pull/9'],
+        firstTimestamp: '2026-01-01T12:00:00.000Z',
+        lastTimestamp: '2026-01-01T12:30:00.000Z',
+      })
+      // Session C: genuinely belongs to the cwd repo (own path resolves)
+      const genuine = makeSession({ sessionId: 'genuine-cwd', firstTimestamp: '2026-01-01T10:00:00.000Z', lastTimestamp: '2026-01-01T11:00:00.000Z' })
+
+      const projects = [
+        { project: 'ghost', projectPath: join(cwdRepo, 'no-such-dir-anymore-xyz'), sessions: [orphanNoPr] },
+        { project: 'ghost2', projectPath: '', sessions: [orphanWithPr] },
+        { project: 'real', projectPath: cwdRepo, sessions: [genuine] },
+      ] as ProjectSummary[]
+
+      const records = computeAttributionRecords(projects, range, cwdRepo)
+
+      // orphan-nopr: nothing joinable -> no record at all
+      expect(records.find(r => r.sessionId === 'orphan-nopr')).toBeUndefined()
+      // orphan-pr: PR link only — no repo, no commits
+      const pr = records.find(r => r.sessionId === 'orphan-pr')!
+      expect(pr.repo).toBeNull()
+      expect(pr.commits).toEqual([])
+      // genuine cwd session keeps full attribution
+      const own = records.find(r => r.sessionId === 'genuine-cwd')!
+      expect(own.repo).toBe('github.com/secret-org/nda-client-repo')
+      expect(own.commits).toHaveLength(1)
+      // The private repo identity appears ONLY on the genuine record
+      const leaked = records.filter(r => r.sessionId !== 'genuine-cwd' && JSON.stringify(r).includes('secret-org'))
+      expect(leaked).toEqual([])
+    } finally {
+      await rm(cwdRepo, { recursive: true, force: true })
+    }
+  })
+
+  it('fallback sessions cannot steal a commit from a genuine session', async () => {
+    const cwdRepo = await mkdtemp(join(tmpdir(), 'codeburn-attr-steal-'))
+    try {
+      initRepo(cwdRepo)
+      git(cwdRepo, ['remote', 'add', 'origin', 'git@github.com:acme/widget.git'])
+      await writeFile(join(cwdRepo, 'file.txt'), 'x\n')
+      commitAt(cwdRepo, 'feat: mine', '2026-01-01T10:30:00Z')
+
+      // Fallback session has the TIGHTER window (would win under old logic);
+      // genuine session has the broader window.
+      const fallbackTight = makeSession({
+        sessionId: 'fallback-tight',
+        prLinks: ['https://github.com/acme/widget/pull/2'],
+        firstTimestamp: '2026-01-01T10:25:00.000Z',
+        lastTimestamp: '2026-01-01T10:35:00.000Z',
+      })
+      const genuineBroad = makeSession({ sessionId: 'genuine-broad' })
+
+      const projects = [
+        { project: 'ghost', projectPath: '', sessions: [fallbackTight] },
+        { project: 'real', projectPath: cwdRepo, sessions: [genuineBroad] },
+      ] as ProjectSummary[]
+
+      const records = computeAttributionRecords(projects, range, cwdRepo)
+
+      expect(records.find(r => r.sessionId === 'fallback-tight')!.commits).toEqual([])
+      expect(records.find(r => r.sessionId === 'genuine-broad')!.commits).toHaveLength(1)
+    } finally {
+      await rm(cwdRepo, { recursive: true, force: true })
+    }
+  })
+
+  it('awards each commit to a single session (tightest window)', async () => {
+    const repoDir = await mkdtemp(join(tmpdir(), 'codeburn-attr-overlap-'))
+    try {
+      initRepo(repoDir)
+      git(repoDir, ['remote', 'add', 'origin', 'https://github.com/acme/widget.git'])
+      await writeFile(join(repoDir, 'file.txt'), 'hello\n')
+      commitAt(repoDir, 'feat: shared window', '2026-01-01T10:30:00Z')
+
+      const tight = makeSession({
+        sessionId: 'sess-tight',
+        firstTimestamp: '2026-01-01T10:15:00.000Z',
+        lastTimestamp: '2026-01-01T10:45:00.000Z',
+      })
+      const broad = makeSession({ sessionId: 'sess-broad' })
+      const projects = [
+        { project: 'app', projectPath: repoDir, sessions: [tight, broad] } as ProjectSummary,
+      ]
+
+      const records = computeAttributionRecords(projects, range, repoDir)
+
+      // Both sessions get records (the loser is a retraction candidate),
+      // but the commit is awarded exactly once — to the tighter window.
+      expect(records).toHaveLength(2)
+      const tightRecord = records.find(r => r.sessionId === 'sess-tight')!
+      const broadRecord = records.find(r => r.sessionId === 'sess-broad')!
+      expect(tightRecord.commits).toHaveLength(1)
+      expect(broadRecord.commits).toEqual([])
+    } finally {
+      await rm(repoDir, { recursive: true, force: true })
+    }
+  })
+})
+
+// ── Dedup keys and flattening ─────────────────────────────────────────
+
+function makeRecord(overrides: Partial<SessionAttributionRecord> = {}): SessionAttributionRecord {
+  return {
+    sessionId: 'sess-1',
+    project: 'app',
+    repo: 'github.com/acme/widget',
+    prLinks: ['https://github.com/acme/widget/pull/3'],
+    commits: [
+      { sha: 'a'.repeat(40), timestamp: '2026-01-01T10:30:00.000Z', inMain: true, wasReverted: false },
+    ],
+    firstTimestamp: '2026-01-01T10:00:00.000Z',
+    lastTimestamp: '2026-01-01T11:00:00.000Z',
+    ...overrides,
+  }
+}
+
+describe('attribution dedup keys', () => {
+  it('encodes commit state so a state transition mints a new key', () => {
+    const before = commitAttributionKey('sess-1', 'abc123', false, false)
+    const merged = commitAttributionKey('sess-1', 'abc123', true, false)
+    const reverted = commitAttributionKey('sess-1', 'abc123', true, true)
+    expect(new Set([before, merged, reverted]).size).toBe(3)
+    // Same state = same key (ledger dedupes repeats)
+    expect(commitAttributionKey('sess-1', 'abc123', true, false)).toBe(merged)
+  })
+
+  it('session key is stable for identical state and changes with commit state', () => {
+    const record = makeRecord()
+    expect(sessionAttributionKey(record)).toBe(sessionAttributionKey(makeRecord()))
+
+    const mutated = makeRecord({
+      commits: [{ sha: 'a'.repeat(40), timestamp: '2026-01-01T10:30:00.000Z', inMain: true, wasReverted: true }],
+    })
+    expect(sessionAttributionKey(mutated)).not.toBe(sessionAttributionKey(record))
+  })
+
+  it('session key changes when the window or project changes (ongoing sessions re-emit)', () => {
+    const base = makeRecord()
+    const grown = makeRecord({ lastTimestamp: '2026-01-01T12:00:00.000Z' })
+    const renamed = makeRecord({ project: 'app-renamed' })
+    expect(sessionAttributionKey(grown)).not.toBe(sessionAttributionKey(base))
+    expect(sessionAttributionKey(renamed)).not.toBe(sessionAttributionKey(base))
+  })
+
+  it('flattens one session item plus one item per commit', () => {
+    const items = flattenAttributionRecords([makeRecord()])
+    expect(items).toHaveLength(2)
+    expect(items[0]).toMatchObject({ kind: 'session', commitCount: 1, endTimestamp: '2026-01-01T11:00:00.000Z' })
+    expect(items[1]).toMatchObject({ kind: 'commit', sha: 'a'.repeat(40), inMain: true, wasReverted: false })
+    expect(items.map(i => i.dedupKey)).toEqual([
+      sessionAttributionKey(makeRecord()),
+      commitAttributionKey('sess-1', 'a'.repeat(40), true, false),
+    ])
+  })
+})
+
+// ── PR link sanitization ──────────────────────────────────────────────
+
+describe('sanitizePrLinks', () => {
+  it('keeps only https URLs shaped like org/repo/pull/N', () => {
+    expect(sanitizePrLinks([
+      'https://github.com/acme/widget/pull/12',
+      'https://ghe.corp.example.com/team/svc/pull/3',   // GHE hosts allowed
+      'http://github.com/acme/widget/pull/12',          // not https
+      'javascript:alert(1)',                            // not a URL shape we accept
+      'https://github.com/acme/widget/issues/12',       // not a PR path
+      'https://github.com/acme/widget/pull/12/files',   // extra path segment
+      'not a url at all',
+      '',
+      'https://github.com/acme/widget/pull/notanumber',
+    ])).toEqual([
+      'https://ghe.corp.example.com/team/svc/pull/3',
+      'https://github.com/acme/widget/pull/12',
+    ])
+  })
+
+  it('rebuilds links from origin + pathname: userinfo, query, and fragment never survive', () => {
+    expect(sanitizePrLinks([
+      'https://alice:ghp_TOKEN@github.com/acme/widget/pull/5',
+      'https://github.com/acme/widget/pull/7?notification_referrer_id=xyz',
+      'https://github.com/acme/widget/pull/6#pullrequestreview-123',
+    ])).toEqual([
+      'https://github.com/acme/widget/pull/5',
+      'https://github.com/acme/widget/pull/6',
+      'https://github.com/acme/widget/pull/7',
+    ])
+  })
+
+  it('dedupes links that collapse to the same rebuilt URL', () => {
+    expect(sanitizePrLinks([
+      'https://github.com/acme/widget/pull/9',
+      'https://github.com/acme/widget/pull/9?ref=a',
+      'https://github.com/acme/widget/pull/9#comment',
+    ])).toEqual(['https://github.com/acme/widget/pull/9'])
+  })
+
+  it('drops oversized inputs and caps the count per session', () => {
+    // A long referrer query is stripped, so the link survives...
+    const longQuery = `https://github.com/acme/widget/pull/1?x=${'a'.repeat(300)}`
+    expect(sanitizePrLinks([longQuery])).toEqual(['https://github.com/acme/widget/pull/1'])
+    // ...but pathological inputs beyond the input bound are dropped outright
+    const huge = `https://github.com/acme/widget/pull/1?x=${'a'.repeat(600)}`
+    expect(sanitizePrLinks([huge])).toEqual([])
+    // And a rebuilt link that is itself oversized is dropped
+    const longPath = `https://github.com/${'o'.repeat(150)}/${'r'.repeat(80)}/pull/1`
+    expect(sanitizePrLinks([longPath])).toEqual([])
+
+    const many = Array.from({ length: 30 }, (_, i) => `https://github.com/acme/widget/pull/${i + 1}`)
+    expect(sanitizePrLinks(many)).toHaveLength(MAX_PR_LINKS_PER_SESSION)
+  })
+})
+
+// ── OTLP payload ──────────────────────────────────────────────────────
+
+function attrMap(attributes: OtlpAttribute[]): Record<string, unknown> {
+  return Object.fromEntries(attributes.map(a => [a.key, a.value]))
+}
+
+describe('buildAttributionOtlpPayload', () => {
+  it('builds session and commit spans sharing the session traceId', () => {
+    const items = flattenAttributionRecords([makeRecord()])
+    const payload = buildAttributionOtlpPayload(items)
+
+    const resource = payload.resourceSpans[0]!
+    const resourceAttrs = attrMap(resource.resource.attributes)
+    expect(resourceAttrs['codeburn.attribution_methodology']).toEqual({ stringValue: 'timestamp-window' })
+    expect(resourceAttrs['codeburn.device_id']).toBeDefined()
+
+    const spans = resource.scopeSpans[0]!.spans
+    expect(spans).toHaveLength(2)
+
+    const sessionSpan = spans.find(s => s.name === SESSION_ATTRIBUTION_SPAN_NAME)!
+    const commitSpan = spans.find(s => s.name === COMMIT_ATTRIBUTION_SPAN_NAME)!
+    expect(sessionSpan.traceId).toBe(deriveTraceId('sess-1'))
+    expect(commitSpan.traceId).toBe(deriveTraceId('sess-1'))
+    expect(sessionSpan.spanId).not.toBe(commitSpan.spanId)
+
+    const sessionAttrs = attrMap(sessionSpan.attributes)
+    expect(sessionAttrs['ai.session_id']).toEqual({ stringValue: 'sess-1' })
+    expect(sessionAttrs['ai.project']).toEqual({ stringValue: 'app' })
+    expect(sessionAttrs['git.repo']).toEqual({ stringValue: 'github.com/acme/widget' })
+    expect(sessionAttrs['git.commit_count']).toEqual({ intValue: '1' })
+    expect(sessionAttrs['git.pr_links']).toEqual({
+      arrayValue: { values: [{ stringValue: 'https://github.com/acme/widget/pull/3' }] },
+    })
+    // Session span carries the real window as its duration
+    expect(sessionSpan.startTimeUnixNano).toBe((BigInt(new Date('2026-01-01T10:00:00.000Z').getTime()) * 1_000_000n).toString())
+    expect(sessionSpan.endTimeUnixNano).toBe((BigInt(new Date('2026-01-01T11:00:00.000Z').getTime()) * 1_000_000n).toString())
+
+    const commitAttrs = attrMap(commitSpan.attributes)
+    expect(commitAttrs['git.sha']).toEqual({ stringValue: 'a'.repeat(40) })
+    expect(commitAttrs['git.in_main']).toEqual({ boolValue: true })
+    expect(commitAttrs['git.was_reverted']).toEqual({ boolValue: false })
+    expect(commitAttrs['git.repo']).toEqual({ stringValue: 'github.com/acme/widget' })
+  })
+
+  it('omits git.repo when null and pr_links when empty', () => {
+    const items = flattenAttributionRecords([makeRecord({ repo: null, prLinks: [], commits: [] })])
+    const payload = buildAttributionOtlpPayload(items)
+    const spans = payload.resourceSpans[0]!.scopeSpans[0]!.spans
+    expect(spans).toHaveLength(1)
+    const attrs = attrMap(spans[0]!.attributes)
+    expect(attrs['git.repo']).toBeUndefined()
+    expect(attrs['git.pr_links']).toBeUndefined()
+    expect(attrs['git.commit_count']).toEqual({ intValue: '0' })
+  })
+
+  it('batches items by maxBatchSize', () => {
+    const items = flattenAttributionRecords([makeRecord(), makeRecord({ sessionId: 'sess-2' })])
+    expect(batchAttributionItems(items, 3).map(b => b.length)).toEqual([3, 1])
+  })
+
+  it('clamps span end time: never 0, never earlier than start + 1ms', () => {
+    // Session window ends BEFORE it starts (out-of-order provider timestamps)
+    const outOfOrder = flattenAttributionRecords([makeRecord({
+      firstTimestamp: '2026-01-01T11:00:00.000Z',
+      lastTimestamp: '2026-01-01T10:00:00.000Z',
+    })])
+    const span1 = buildAttributionOtlpPayload(outOfOrder).resourceSpans[0]!.scopeSpans[0]!.spans[0]!
+    expect(BigInt(span1.endTimeUnixNano)).toBe(BigInt(span1.startTimeUnixNano) + 1_000_000n)
+
+    // Malformed end timestamp (toUnixNano -> 0)
+    const malformed = flattenAttributionRecords([makeRecord({ lastTimestamp: 'not-a-date' })])
+    const span2 = buildAttributionOtlpPayload(malformed).resourceSpans[0]!.scopeSpans[0]!.spans[0]!
+    expect(span2.endTimeUnixNano).not.toBe('0')
+    expect(BigInt(span2.endTimeUnixNano)).toBe(BigInt(span2.startTimeUnixNano) + 1_000_000n)
+  })
+})
+
+// ── Send + ledger pipeline ────────────────────────────────────────────
+
+type MockResponse = { status: number; body?: unknown; headers?: Record<string, string> }
+
+function startMockOtlp(responses: MockResponse[]): Promise<{
+  url: string
+  server: Server
+  requests: Array<{ auth: string | undefined; body: unknown }>
+}> {
+  const requests: Array<{ auth: string | undefined; body: unknown }> = []
+  let idx = 0
+
+  return new Promise(resolve => {
+    const server = createServer((req, res) => {
+      let raw = ''
+      req.on('data', c => { raw += c })
+      req.on('end', () => {
+        requests.push({ auth: req.headers.authorization, body: JSON.parse(raw || '{}') })
+        const r = responses[Math.min(idx, responses.length - 1)]!
+        idx++
+        res.writeHead(r.status, { 'Content-Type': 'application/json', ...r.headers })
+        res.end(r.body !== undefined ? JSON.stringify(r.body) : '{}')
+      })
+    })
+    server.listen(0, '127.0.0.1', () => {
+      const addr = server.address() as { port: number }
+      resolve({ url: `http://127.0.0.1:${addr.port}/v1/traces`, server, requests })
+    })
+  })
+}
+
+let tmpDir: string
+const originalHome = process.env.HOME
+const originalXdgCache = process.env.XDG_CACHE_HOME
+
+beforeEach(async () => {
+  tmpDir = await mkdtemp(join(tmpdir(), 'codeburn-attr-push-'))
+  process.env.HOME = tmpDir
+  process.env.XDG_CACHE_HOME = join(tmpDir, '.cache')
+})
+
+afterEach(async () => {
+  process.env.HOME = originalHome
+  if (originalXdgCache === undefined) delete process.env.XDG_CACHE_HOME
+  else process.env.XDG_CACHE_HOME = originalXdgCache
+  await rm(tmpDir, { recursive: true, force: true })
+})
+
+describe('sendAttributionBatches + collectUnsentAttribution', () => {
+  it('sends attribution spans, ledgers dedup keys, and filters them on the next collect', async () => {
+    const { sendAttributionBatches, collectUnsentAttribution } = await import('../src/sync/push.js')
+    const { readLedger } = await import('../src/sync/ledger.js')
+
+    const record = makeRecord()
+    const first = collectUnsentAttribution([record])
+    expect(first.unsent).toHaveLength(2)
+
+    const mock = await startMockOtlp([{ status: 200 }])
+    try {
+      const result = await sendAttributionBatches({
+        endpoint: mock.url,
+        accessToken: 'token-1',
+        batches: [first.unsent],
+      })
+
+      expect(result.outcome).toBe('complete')
+      expect(result.totalSent).toBe(2)
+      expect(result.totalCostSent).toBe(0)
+      expect(mock.requests).toHaveLength(1)
+      expect(mock.requests[0]!.auth).toBe('Bearer token-1')
+
+      const body = mock.requests[0]!.body as { resourceSpans: Array<{ scopeSpans: Array<{ spans: Array<{ name: string }> }> }> }
+      const names = body.resourceSpans[0]!.scopeSpans[0]!.spans.map(s => s.name).sort()
+      expect(names).toEqual([COMMIT_ATTRIBUTION_SPAN_NAME, SESSION_ATTRIBUTION_SPAN_NAME])
+
+      const ledgered = readLedger().map(e => e.key).sort()
+      expect(ledgered).toEqual(first.unsent.map(i => i.dedupKey).sort())
+
+      // Identical state on the next push: nothing unsent
+      expect(collectUnsentAttribution([record]).unsent).toEqual([])
+
+      // State transition (commit reverted): the changed facts re-send
+      const mutated = makeRecord({
+        commits: [{ sha: 'a'.repeat(40), timestamp: '2026-01-01T10:30:00.000Z', inMain: true, wasReverted: true }],
+      })
+      const after = collectUnsentAttribution([mutated])
+      expect(after.unsent.map(i => i.kind).sort()).toEqual(['commit', 'session'])
+    } finally {
+      mock.server.close()
+    }
+  })
+
+  it('retracts a session span when its commit migrates to a tighter-window session', async () => {
+    const { sendAttributionBatches, collectUnsentAttribution } = await import('../src/sync/push.js')
+
+    const sha = 'b'.repeat(40)
+    const commit = { sha, timestamp: '2026-01-01T10:30:00.000Z', inMain: true, wasReverted: false }
+
+    // Push 1: session A (broad window) owns the commit
+    const push1 = collectUnsentAttribution([makeRecord({ sessionId: 'sess-A', prLinks: [], commits: [commit] })])
+    expect(push1.unsent).toHaveLength(2)
+    const mock = await startMockOtlp([{ status: 200 }])
+    try {
+      await sendAttributionBatches({ endpoint: mock.url, accessToken: 't', batches: [push1.unsent] })
+
+      // Push 2: a later-parsed tighter session B now wins the commit; A is empty
+      const push2 = collectUnsentAttribution([
+        makeRecord({ sessionId: 'sess-A', prLinks: [], commits: [] }),          // loser: retraction candidate
+        makeRecord({ sessionId: 'sess-B', prLinks: [], commits: [commit] }),    // winner
+      ])
+
+      // A re-emits with commit_count 0 (retraction), B emits session + commit
+      const kinds = push2.unsent.map(i => `${i.sessionId}:${i.kind}`).sort()
+      expect(kinds).toEqual(['sess-A:session', 'sess-B:commit', 'sess-B:session'])
+      const retraction = push2.unsent.find(i => i.sessionId === 'sess-A')!
+      expect(retraction.commitCount).toBe(0)
+      expect(retraction.dedupKey).not.toBe(push1.unsent.find(i => i.kind === 'session')!.dedupKey)
+
+      // A session that was NEVER sent stays excluded when empty
+      const neverSent = collectUnsentAttribution([
+        makeRecord({ sessionId: 'sess-never', prLinks: [], commits: [] }),
+      ])
+      expect(neverSent.unsent).toEqual([])
+    } finally {
+      mock.server.close()
+    }
+  })
+
+  it('does not ledger on server error', async () => {
+    const { sendAttributionBatches } = await import('../src/sync/push.js')
+    const { readLedger } = await import('../src/sync/ledger.js')
+
+    const items = flattenAttributionRecords([makeRecord()])
+    const mock = await startMockOtlp([{ status: 500 }])
+    try {
+      const result = await sendAttributionBatches({
+        endpoint: mock.url,
+        accessToken: 'token-1',
+        batches: [items],
+      })
+      expect(result.outcome).toBe('server-error')
+      expect(readLedger()).toEqual([])
+    } finally {
+      mock.server.close()
+    }
+  })
+})