Enhanced `ping-service` documentation with architectural, implementation, and API details. Added a new journal entry outlining the troubleshooting steps for backend startup issues, including fixes for Dockerfile paths, Gradle build conflicts, and Keycloak pre-build configuration.
Added documentation to outline the Offline-First strategy for the KMP frontend, emphasizing the use of SQLDelight with cross-platform storage. Also included guidance for setting up Web targets, covering OPFS integration and Web Worker usage. Updated ADRs with decisions for SQLDelight and Koin adoption.