chore: update docs

backend/src/features/audit-log/CLAUDE.md

@@ -1,12 +1,11 @@
 # audit-log/
 
-Centralized audit logging system for tracking all user and system actions.
-
 ## Files
 
 | File | What | When to read |
 | ---- | ---- | ------------ |
-| `README.md` | Architecture and API documentation | Understanding audit log system |
+| `README.md` | Architecture, usage patterns, categories | Understanding audit log system |
+| `audit-log.instance.ts` | Singleton service instance | Cross-feature logging integration |
 
 ## Subdirectories
 
@@ -18,38 +17,3 @@ Centralized audit logging system for tracking all user and system actions.
 | `jobs/` | Scheduled cleanup job | Retention policy |
 | `migrations/` | Database schema | Schema changes |
 | `__tests__/` | Integration tests | Adding or modifying tests |
-
-## Key Files
-
-| File | What | When to read |
-| ---- | ---- | ------------ |
-| `audit-log.instance.ts` | Singleton service instance | Cross-feature logging |
-| `domain/audit-log.types.ts` | Types, categories, severities | Type definitions |
-| `domain/audit-log.service.ts` | Core logging operations | Creating/searching logs |
-| `data/audit-log.repository.ts` | Database queries | Data access patterns |
-| `jobs/cleanup.job.ts` | 90-day retention cleanup | Retention enforcement |
-
-## Usage
-
-Import the singleton for cross-feature logging:
-
-```typescript
-import { auditLogService } from '../../audit-log';
-
-// Log with convenience methods
-await auditLogService.info('vehicle', userId, 'Vehicle created', 'vehicle', vehicleId);
-await auditLogService.warning('auth', userId, 'Password reset requested');
-await auditLogService.error('system', null, 'Backup failed', 'backup', backupId);
-```
-
-## Categories
-
-- `auth`: Login, logout, password changes
-- `vehicle`: Vehicle CRUD operations
-- `user`: User management actions
-- `system`: Backups, imports/exports
-- `admin`: Admin-specific actions
-
-## Retention
-
-Logs older than 90 days are automatically deleted by a daily cleanup job (3 AM).