3bdc6ff1c9
## Security Enhancements (P0) - Add input validation with max_length and numeric range constraints - Implement WebSocket token authentication via first message - Add path traversal prevention in file storage service ## Permission Enhancements (P0) - Add project member management for cross-department access - Implement is_department_manager flag for workload visibility ## Cycle Detection (P0) - Add DFS-based cycle detection for task dependencies - Add formula field circular reference detection - Display user-friendly cycle path visualization ## Concurrency & Reliability (P1) - Implement optimistic locking with version field (409 Conflict on mismatch) - Add trigger retry mechanism with exponential backoff (1s, 2s, 4s) - Implement cascade restore for soft-deleted tasks ## Rate Limiting (P1) - Add tiered rate limits: standard (60/min), sensitive (20/min), heavy (5/min) - Apply rate limits to tasks, reports, attachments, and comments ## Frontend Improvements (P1) - Add responsive sidebar with hamburger menu for mobile - Improve touch-friendly UI with proper tap target sizes - Complete i18n translations for all components ## Backend Reliability (P2) - Configure database connection pool (size=10, overflow=20) - Add Redis fallback mechanism with message queue - Add blocker check before task deletion ## API Enhancements (P3) - Add standardized response wrapper utility - Add /health/ready and /health/live endpoints - Implement project templates with status/field copying ## Tests Added - test_input_validation.py - Schema and path traversal tests - test_concurrency_reliability.py - Optimistic locking and retry tests - test_backend_reliability.py - Connection pool and Redis tests - test_api_enhancements.py - Health check and template tests Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Tasks: Add Input Validation and Security Enhancements
1. Schema Input Validation
- 1.1 Add max_length validation to TaskBase schema (title: 500, description: 10000)
- 1.2 Add max_length validation to ProjectBase schema
- 1.3 Add max_length validation to SpaceBase schema
- 1.4 Add max_length validation to CommentBase schema
- 1.5 Add max_length validation to all other schema string fields
- 1.6 Add numeric range validation (ge=0, le=max_value) for decimal fields
2. WebSocket Token Security
- 2.1 Implement WebSocket authentication via first message instead of query parameter
- 2.2 Update frontend WebSocket connection to send token in first message
- 2.3 Add server log filtering to mask sensitive query parameters as fallback (N/A - token no longer in query params)
3. File Path Security
- 3.1 Add explicit path traversal validation in file_storage_service.py
- 3.2 Ensure resolved path is within base directory
- 3.3 Add logging for path traversal attempts
4. Testing
- 4.1 Add unit tests for input validation edge cases
- 4.2 Add security tests for path traversal attempts
- 4.3 Test WebSocket authentication flow