# 10. Coding Standards

### 10.1 Existing Standards Compliance
**Code Style:** Follow existing Python (PEP 8) and JavaScript (ESLint) standards
**Linting Rules:** Use existing linting configurations
**Testing Patterns:** Follow existing pytest and React testing patterns
**Documentation Style:** Follow existing docstring and JSDoc patterns

### 10.2 Critical Integration Rules
- **Existing API Compatibility:** New endpoints must follow existing authentication patterns
- **Database Integration:** Use existing Supabase connection and query patterns
- **Error Handling:** Follow existing error response format
- **Logging Consistency:** Use existing logging patterns