fix: address code review feedback

- Add inline safety comment for noqa: S608 (table_name from inspect)
- Fix HTTPException detail to be a string (not dict)
- Add aria-label to migration progress bar
- Rename _noop to _NoOpContextManager in tests
- Add explanatory comment for zip(strict=False)

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

app/api/database.py

@@ -162,8 +162,9 @@ async def execute_migration(body: MigrateRequest, request: Request) -> dict:
 
     result = migrate_data(body.source_url, body.target_url)
     if not result["success"]:
+        error_summary = "; ".join(result.get("errors", ["Unknown error"]))
         raise HTTPException(
             status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
-            detail={"message": "Migration completed with errors", **result},
+            detail=f"Migration completed with errors: {error_summary}",
         )
     return result