- Created `SqliteDatabaseManager` for SQLite database initialization and management.
- Refactored `DatabaseManager` into an abstract class to support different database implementations.
- Introduced `ApplicationMode` enum to switch between `local` and `server` modes.
- Updated `MediaManagerApplication` to handle `runtype` configuration and initialize SQLite in `local` mode.
- Updated `config.properties.example` with new `runtype` property.
- Added SQLite JDBC dependency to `pom.xml`.
- Replaced `SimpleProtocol` with `TransportProtocol` in `IPCManager`.
- Added `DelegateActionManager` to route requests to handlers, starting with `EchoHandler`.
- Updated `MediaManagerApplication` to initialize and manage `DelegateActionManager`.
- Extended Protocol Buffers schema with `Request` and `Response` definitions.
- Enhanced logging for request processing and redesigned response flow.
- Introduced `IPCManager` class to handle IPC using UNIX domain sockets.
- Updated `MediaManagerApplication` to initialize and manage `IPCManager` during startup and shutdown.
- Enhanced logging for IPC initialization and cleanup.
- Updated `config.properties.example` with `ipc.socket.path` property.
- Enabled `immediateFlush` for log appenders and disabled `shutdownHook` in Log4j2 configuration.
- Enhanced shutdown hook with graceful Log4j2 termination and extended delay for log flushing.
- Improved database connection closure logging in `DatabaseManager`.
- Integrated Maven Shade Plugin to create executable JARs with all dependencies.
- Added detailed logging for database initialization and connection handling.
- Implemented configuration validation and sanity checks during initialization.
- Introduced `close()` method to properly release database resources.
- Updated `MediaManagerApplication` to invoke `DatabaseManager.close()` on shutdown.
- Updated `.gitignore` to exclude sensitive configuration files while allowing example files.
- Introduced `DatabaseManager` class to manage database connections.
- Updated `MediaManagerApplication` to initialize `DatabaseManager` using configuration properties.
- Renamed configuration file to `config.properties` for consistency.
- Updated `MediaManagerApplication` to load the new configuration file.
- Adjusted references in `README.md` and `.gitignore`.
- Added `.gitignore` for common IDE and build artifacts.
- Configured `pom.xml` with dependencies: PostgreSQL, Hibernate, HikariCP, Log4j 2, Jackson, JUnit 5.
- Created `Media` entity with JPA annotations.
- Added `application.properties` for database and IPC configuration.
- Configured Log4j 2 with console and rolling file appenders.
- Provided `README.md` with setup instructions.
- Included `MediaManagerApplication` class as a starting point.
