release: 0.9.16 (#720)

Bump the version and refresh the bundled LiteLLM pricing snapshots.

Since 0.9.15, roughly sixty merged changes: the /advisor escalation
billing and unified large-line scanners for Claude, Copilot CLI
session.shutdown billing and skill extraction, the CodeWhale provider,
kiro v2 credit pricing, OpenCode custom dirs and legacy-store merging,
archived Codex sessions, antigravity timestamp stability, estimated-cost
markers across every surface, the doctor command, spend budgets, act
apply-model with a per-project quality tripwire, honest yield attribution
with an ambiguous bucket, MCP tool-deferral detection and fixes, agent by
model cross-breakdowns and per-record exports, granular dashboard
timelines, a scrollable daily history, the Electron desktop app with mac,
Windows and Linux packaging, menubar rate-limit handling and idle-cadence
energy fixes, team sync in preview, and the four-surface README.

Every merged PR was re-verified against this exact tree before the bump:
full JS suite (3527 tests), Swift suite (97), release build smoked, and
eight area audits with live functional probes.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "codeburn",
-  "version": "0.9.15",
+  "version": "0.9.16",
   "description": "See where your AI spend goes - by task, tool, model, and project",
   "type": "module",
   "main": "./dist/cli.js",