jikime/jikime-adk/jikime-workflow-task-format

### Task N: [Title]
 
**Do**: What to implement (specific action)
**Files**: Which files to create or modify
**Done when**: Measurable acceptance criteria
**Verify**: How to verify completion (test command, manual check)
**Commit**: Commit message when task is complete

### Task 1: Create user authentication API
 
**Do**: Implement POST /api/auth/login endpoint with JWT token generation
**Files**: src/api/auth/login.ts (create), src/types/auth.ts (create)
**Done when**: POST /api/auth/login returns 200 with valid JWT for correct credentials, 401 for invalid
**Verify**: `npm test -- --grep "auth login"` passes
**Commit**: feat(auth): add login endpoint with JWT generation

### Task N: [VERIFY] Quality Checkpoint
 
**Do**: Run full verification suite
**Files**: (none - verification only)
**Done when**: All checks pass with zero errors
**Verify**:
  - `npm run build` (zero errors)
  - `npm test` (all passing)
  - `npm run lint` (zero warnings)
  - Manual: feature works as expected
**Commit**: (no commit - checkpoint only)

Task 1: Implementation
Task 2: Implementation
Task 3: Implementation
Task 4: [VERIFY] Quality Checkpoint   <-- after 3 tasks
Task 5: Implementation
Task 6: Implementation
Task 7: [VERIFY] Quality Checkpoint   <-- after 2 tasks
Task 8: Implementation
...
Task N: [VERIFY] Final Checkpoint     <-- always at the end

1. Task discovered → TodoWrite: add with "pending" status
2. Task started → TodoWrite: change to "in_progress"
3. Task completed → TodoWrite: change to "completed"
4. [VERIFY] failed → TodoWrite: add fix tasks with "pending"

[pending] Task 1: Create user authentication API
[in_progress] Task 2: Add password hashing
[completed] Task 3: Create login form
[pending] Task 4: [VERIFY] Quality Checkpoint

### Task N: [ANALYZE] Understand current auth flow
 
**Do**: Read and document current authentication implementation
**Files**: src/auth/ (read only)
**Done when**: Current behavior documented with edge cases identified
**Verify**: Documentation matches actual code behavior
**Commit**: (no commit - analysis only)
 
### Task N+1: [PRESERVE] Add characterization tests
 
**Do**: Write tests that capture current behavior exactly
**Files**: tests/auth.test.ts (create)
**Done when**: Tests pass against current implementation
**Verify**: `npm test -- --grep "auth characterization"` all pass
**Commit**: test(auth): add characterization tests for existing auth flow
 
### Task N+2: [IMPROVE] Refactor to JWT-based auth
 
**Do**: Replace session-based auth with JWT tokens
**Files**: src/auth/login.ts (modify), src/auth/middleware.ts (modify)
**Done when**: All characterization tests still pass with new implementation
**Verify**: `npm test` all pass, no behavior change
**Commit**: refactor(auth): migrate from session to JWT authentication