* Expose per-day one-shot data in daily JSON output
Closes#279.
Adds turns, editTurns, oneShotTurns, oneShotRate to each entry of the
`daily[]` array in `codeburn report --format json` output. The data was
already computed internally for activity-level rollups; this just buckets
it by date so consumers building daily-resolution efficiency dashboards
(streak tracking, heatmaps, rolling-window charts) don't have to re-derive
the rate from period-level activities.
Counting matches parser.ts categoryBreakdown semantics:
- every turn counts toward `turns`
- turns with hasEdits=true count toward `editTurns`
- edit turns with retries=0 count toward `oneShotTurns`
- oneShotRate is null (not 0) when editTurns=0 — a chat-only day's rate
is undefined, and reading it as 0% would be misleading
Real consumer named in the issue: a 10-developer internal usage tracker
that scores days by cache hit + cost/call + (now) one-shot rate.
* Strengthen daily/activities reconciliation + CHANGELOG entry
- Fall back to turn.assistantCalls[0]?.timestamp when turn.timestamp is
missing so daily aggregate doesn't drop turns that activities[] keeps.
Previously sum(daily[].editTurns) could be < sum(activities[].editTurns)
for sessions starting with assistant entries before any user line.
- Add Unreleased CHANGELOG entry for the daily one-shot fields.
