Added

• Request-time usageEvents attribution for Claude Code, Codex, and
  Eureka fallback token sources, enabling long sessions to be counted on
  the days their model requests actually occurred.

Changed

• Dashboard date filters, timelines, burn clock, project activity, and
  model-cost breakdowns now use request-level usage events instead of
  session start time.
• Corpus golden snapshots now include request-level token/cost events and
  updated aggregate totals.

Fixed

• Parser cursor schema invalidation now forces unchanged files to be
  re-read after request-level attribution changes, backfilling event data
  without manual cache clearing.