Top-level tests that span multiple submodules:
- test_stores.py (7): the trigger + action registry contracts — register
round-trip, unknown type → None (not raise), duplicate registration
rejected, defensive snapshot from all_*.
- test_definition_types.py (2): params_schema property on both
ActionDefinition and TriggerDefinition reflects the Pydantic model.
- test_persistence_enums.py (3): exact string values + member sets of
AutomationStatus / RunStatus / TriggerType — the postgres-mirrored
contract that breaks stored rows if drifted.
- test_import_registrations.py (2): the bundled agent_task action and
schedule trigger self-register on package import (canary for the
side-effect import chain).
conftest.py adds isolated_action_registry / isolated_trigger_registry
fixtures: snapshot + restore of the module-level _REGISTRY dicts so
tests that add their own definitions don't leak across the suite.
14 tests, pure unit.
