- Apply ruff format to store.py (split multi-arg conn.execute calls) and
steps file (collapse single-arg execute to one line)
- Fix AmbiguousStep: add literal quotes to @given/@then patterns so
'a session with id "{session_id}"' is unambiguous vs the
'in the database' variant; update all dependent then-steps consistently
- Mark if TYPE_CHECKING block with # pragma: no cover (never executed)
- Add scenario + step for default db_path to cover store.py lines 32-34
(uses unittest.mock.patch on Path.home to avoid touching real homedir)
ISSUES CLOSED: #10648
HAL9000