- Exclude test files from tsconfig.app.json (matches tsconfig.json pattern)
Test files use loose mocks that don't satisfy strict type checks —
they're validated by vitest at runtime, not by tsc
- Fix highlightDiff.test.ts React 19 type errors (props typed as unknown)
- Remove duplicate fetchTasks import in api.test.ts
- Add Task[] cast in ActivityLogModal.test.tsx mock data
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>