- Add Default impl for AppState with mock services for testing
- Add MockLLMProvider for tests that need LLM without real API
- Add create_mock_auth_service() for Zitadel testing
- Add test_utils.rs with TestAppStateBuilder, MockChannelAdapter
- Enable rhai 'sync' feature to fix Send+Sync for Dynamic types
- Fix attendance.rs tests to use pure functions (no DB required)
- Fix on_error.rs tests to use String instead of i32
- Remove unused imports in attendance.rs
All tests pass, 0 warnings, 0 errors.
