- Consolidate StatsModel queries from 12 to 3 using conditional aggregation
- Add input validation to DashboardController (sort columns, dates, priorities)
- Combine getCategories/getTypes into single query
- Add transaction support to BulkOperationsModel with atomic mode option
- Add depth limit (20) to dependency cycle detection to prevent DoS
- Add caching to UserModel.getAllGroups() with 5-minute TTL
- Improve ticket ID generation with 50 attempts, exponential backoff, and fallback
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Consolidate all 20 API files to use centralized Database helper
- Add optimistic locking to ticket updates to prevent concurrent conflicts
- Add caching to StatsModel (60s TTL) for dashboard performance
- Add health check endpoint (api/health.php) for monitoring
- Improve rate limit cleanup with cron script and efficient DirectoryIterator
- Enable rate limit response headers (X-RateLimit-*)
- Add audit logging for workflow transitions
- Log Discord webhook failures instead of silencing
- Fix visibility check on export_tickets.php
- Add database migration system with performance indexes
- Fix cron recurring tickets to use assignTicket method
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>