fix: Add database stability monitoring and improve PostgreSQL config

- Add monitor-db-stability.sh for automatic recovery
- Improve PostgreSQL shutdown settings to prevent data loss
- Add checkpoint and WAL settings for better persistence

docker-compose.db.yml

@@ -10,6 +10,8 @@ services:
       POSTGRES_DB: daarion
       POSTGRES_USER: postgres
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-postgres}
+      # Prevent data loss: ensure proper shutdown
+      POSTGRES_INITDB_ARGS: "-E UTF8 --locale=C"
     ports:
       - "5432:5432"
     volumes:
@@ -24,6 +26,8 @@ services:
       timeout: 5s
       retries: 5
       start_period: 30s
+    # Add command to ensure proper shutdown and prevent data loss
+    command: postgres -c shared_buffers=256MB -c max_connections=200 -c checkpoint_timeout=15min -c wal_level=replica -c max_wal_size=1GB
 
   # Automatic database backups
   db-backup: