- Upgrade Filament framework from v3 to v4
- Update all Filament resources and pages for v4 compatibility
- Fix test suite to maintain 100% pass rate (321 tests passing)
- Add visibility condition for ticket close action (only when not closed)
- Update dependencies and build assets for new Filament version
- Maintain backward compatibility while leveraging v4 improvements
- Add proper Tests\ namespace to all test classes in tests/Feature and tests/Unit
- Split RemainingModelsTest.php into separate files (PSR-4 compliance)
- Create missing factories: MetaFactory, RemoteEmailFactory
- Add HasFactory trait to RemoteEmail model
- Add missing ReflectionClass imports to test files
- Fix mass assignment issues in Meta and RemoteEmail models
- Override database connection for RemoteEmail in testing environment
- Fix DateTime comparison precision issues in tests
