- Implemented a minimal integration test to validate persistence layer functionality.
- Configured PostgreSQL Testcontainer and Flyway migrations for testing.
- Added `TestPersistenceConfig` to isolate testing setup and avoid loading unnecessary components.
- Updated build script to include Testcontainers dependencies.
Added `/ping/sync` endpoint with timestamp-based Delta-Sync functionality to efficiently support offline-first clients. Extended `PingApi` and frontend clients (`PingApiClient`, `PingApiKoinClient`) with `syncPings`. Updated repository, service, and controller logic for sync handling, including new JPA query `findByCreatedAtAfter`. Adjusted test doubles and completed unit tests for backend and frontend alignment. Documented sync approach and API usage.
- Removed `MdcCorrelationFilter` and simplified correlation ID management using Micrometer Tracing.
- Updated `SecurityConfig` in `gateway` with enhanced role-based access and standardized JWT validation.
- Added new `@Profile` annotations in `ping-service` to exclude certain components during testing.
- Refactored and removed legacy `application-keycloak.yaml` and consolidated settings into the primary `application.yaml`.
- Adjusted Gradle scripts to clean up dependency declarations and improve modularity.
- Simplified CORS and Gateway route configurations for better maintainability.
Configured `sqlite.worker.js` for OPFS-backed SQLite WASM operations in the frontend build pipeline. Added new Spring Boot dependency bundles including secure service configurations. Integrated updated database utilities with enhanced error handling. Removed outdated circuit breaker tests and replaced them with modern unit and integration test setups.