Jason bbf830a1da test: add frontend testing infrastructure with vitest ...

- Introduce Vitest + React Testing Library + jsdom environment
- Add useDragSort hook unit tests covering:
  * Sorting logic (sortIndex → createdAt → name)
  * Successful drag operation (API call + cache invalidation)
  * Failed drag operation (error toast display)
  * Edge case (no valid target, no API call)
- Configure global test setup (i18n mock, auto cleanup)
- Update TypeScript configs to include tests/ directory
- Add test development plan documentation

Test Coverage:
  ✓ Provider drag-and-drop sorting core logic
  ✓ React Query cache refresh
  ✓ Toast notification display
  ✓ Boundary condition handling

Test Results: 4/4 passed (671ms)
Next Steps: Sprint 2 - component tests with MSW mock layer

2025-10-25 10:08:06 +08:00

..

REFACTORING_CHECKLIST.md

refactor: consolidate provider form components

2025-10-16 13:02:38 +08:00

REFACTORING_MASTER_PLAN.md

feat: complete stage 4 cleanup and code formatting

2025-10-16 12:13:51 +08:00

REFACTORING_REFERENCE.md

docs: add comprehensive refactoring documentation

2025-10-16 09:38:41 +08:00

roadmap.md

chore: bump version to v3.5.0 and update roadmap

2025-10-12 22:27:02 +08:00

TEST_DEVELOPMENT_PLAN.md

test: add frontend testing infrastructure with vitest

2025-10-25 10:08:06 +08:00