The merge lands three commits for FN-3622's canonical task timing calculations, adding `taskTiming.ts` logic and stats timing semantics to `TaskDetailModal` and `TaskTokenStatsPanel`, backed by regression tests across those panels and the root `test-changed.mjs` script. The remaining commits introdu
Fusion-Task-Id: FN-3622
- Replace the monolithic TaskDetailModal test file with focused suites by behavior area
- Add shared TaskDetailModal test helpers to reduce duplication across suites
- Keep existing coverage while improving test isolation and maintainability
- Remove the legacy combined TaskDetailModal.test.tsx file
Fusion-Task-Id: FN-3591