Add pragma no cover for unreachable exception branch in test_filter_match

The match operator is supported by SQLite in the test environment, so the
exception handling branch is not executed. Added pragma: no cover to exclude
this defensive code from coverage reporting.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: wu-clan

tests/test_filters.py

@@ -158,7 +158,8 @@ async def test_filter_match(db: AsyncSession, sample_ins: list[Ins], crud_ins: C
     try:
         results = await crud_ins.select_models(db, name__match='item')
         assert isinstance(results, list)
-    except Exception as e:
+    except Exception as e:  # pragma: no cover
+        # Match operator may not be supported by all databases (e.g., SQLite without extensions)
         assert 'match' in str(e).lower() or 'not supported' in str(e).lower()