soem fixes

src/server/database/connection.py

@@ -86,19 +86,24 @@ async def init_db() -> None:
         db_url = _get_database_url()
         logger.info(f"Initializing database: {db_url}")
         
+        # Build engine kwargs based on database type
+        is_sqlite = "sqlite" in db_url
+        engine_kwargs = {
+            "echo": settings.log_level == "DEBUG",
+            "poolclass": pool.StaticPool if is_sqlite else pool.QueuePool,
+            "pool_pre_ping": True,
+        }
+        
+        # Only add pool_size and max_overflow for non-SQLite databases
+        if not is_sqlite:
+            engine_kwargs["pool_size"] = 5
+            engine_kwargs["max_overflow"] = 10
+        
         # Create async engine
-        _engine = create_async_engine(
-            db_url,
-            echo=settings.log_level == "DEBUG",
-            poolclass=pool.StaticPool if "sqlite" in db_url else pool.QueuePool,
-            pool_size=5 if "sqlite" not in db_url else None,
-            max_overflow=10 if "sqlite" not in db_url else None,
-            pool_pre_ping=True,
-            future=True,
-        )
+        _engine = create_async_engine(db_url, **engine_kwargs)
         
         # Configure SQLite if needed
-        if "sqlite" in db_url:
+        if is_sqlite:
             _configure_sqlite_engine(_engine)
         
         # Create async session factory
@@ -112,12 +117,13 @@ async def init_db() -> None:
         
         # Create sync engine for initial setup
         sync_url = settings.database_url
-        _sync_engine = create_engine(
-            sync_url,
-            echo=settings.log_level == "DEBUG",
-            poolclass=pool.StaticPool if "sqlite" in sync_url else pool.QueuePool,
-            pool_pre_ping=True,
-        )
+        is_sqlite_sync = "sqlite" in sync_url
+        sync_engine_kwargs = {
+            "echo": settings.log_level == "DEBUG",
+            "poolclass": pool.StaticPool if is_sqlite_sync else pool.QueuePool,
+            "pool_pre_ping": True,
+        }
+        _sync_engine = create_engine(sync_url, **sync_engine_kwargs)
         
         # Create sync session factory
         _sync_session_factory = sessionmaker(