Refactor all main.py

services/orders/app/core/database.py

@@ -76,4 +76,16 @@ async def get_db_health() -> bool:
         return True
     except Exception as e:
         logger.error("Database health check failed", error=str(e))
-        return False
+        return False
+
+
+# Database manager instance for service_base compatibility
+from shared.database.base import DatabaseManager
+
+database_manager = DatabaseManager(
+    database_url=settings.DATABASE_URL,
+    service_name="orders-service",
+    pool_size=10,
+    max_overflow=20,
+    echo=settings.DEBUG
+)