chore: import upstream snapshot with attribution

2026-07-13 11:55:55 +08:00
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+# Common Patterns
+
+## Skeleton Projects
+
+When implementing new functionality:
+1. Search for battle-tested skeleton projects
+2. Use parallel agents to evaluate options:
+   - Security assessment
+   - Extensibility analysis
+   - Relevance scoring
+   - Implementation planning
+3. Clone best match as foundation
+4. Iterate within proven structure
+
+## Design Patterns
+
+### Repository Pattern
+
+Encapsulate data access behind a consistent interface:
+- Define standard operations: findAll, findById, create, update, delete
+- Concrete implementations handle storage details (database, API, file, etc.)
+- Business logic depends on the abstract interface, not the storage mechanism
+- Enables easy swapping of data sources and simplifies testing with mocks
+
+### API Response Format
+
+Use a consistent envelope for all API responses:
+- Include a success/status indicator
+- Include the data payload (nullable on error)
+- Include an error message field (nullable on success)
+- Include metadata for paginated responses (total, page, limit)