Add exception handling to SessionHandler.__del__

The scoped_session.remove() call could fail if the database connection
is already closed during garbage collection. Wrapping in try/except
with debug logging prevents errors during interpreter shutdown.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: febus982

sqlalchemy_bind_manager/_session_handler.py

@@ -19,6 +19,7 @@
 #  DEALINGS IN THE SOFTWARE.
 
 import asyncio
+import logging
 from contextlib import asynccontextmanager, contextmanager
 from typing import AsyncIterator, Iterator
 
@@ -34,6 +35,8 @@
 )
 from sqlalchemy_bind_manager.exceptions import UnsupportedBindError
 
+logger = logging.getLogger(__name__)
+
 
 class SessionHandler:
     scoped_session: scoped_session
@@ -45,8 +48,11 @@ def __init__(self, bind: SQLAlchemyBind):
             self.scoped_session = scoped_session(bind.session_class)
 
     def __del__(self):
-        if getattr(self, "scoped_session", None):
-            self.scoped_session.remove()
+        try:
+            if getattr(self, "scoped_session", None):
+                self.scoped_session.remove()
+        except Exception:
+            logger.debug("Failed to remove scoped session", exc_info=True)
 
     @contextmanager
     def get_session(self, read_only: bool = False) -> Iterator[Session]: