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>
20 lines
1022 B
Markdown
20 lines
1022 B
Markdown
## ADDED Requirements
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### Requirement: Task Dependency Cycle Prevention
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The system SHALL detect and prevent circular dependencies between tasks to ensure Gantt charts can be properly rendered.
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#### Scenario: Direct circular dependency rejected
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- **WHEN** user attempts to create dependency where Task A depends on Task B and Task B depends on Task A
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- **THEN** system rejects the operation with 400 Bad Request
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- **THEN** error message includes the cycle path (e.g., "Circular dependency detected: A -> B -> A")
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#### Scenario: Indirect circular dependency rejected
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- **WHEN** user attempts to create dependency that would form a cycle (A -> B -> C -> A)
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- **THEN** system rejects the operation with 400 Bad Request
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- **THEN** error message includes the full cycle path
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#### Scenario: Valid dependency chain accepted
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- **WHEN** user creates dependencies forming a valid DAG (directed acyclic graph)
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- **THEN** system accepts and saves the dependencies
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- **THEN** Gantt chart renders correctly with proper task ordering
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