chore: fix pghistory migration deps and improve htmx utilities

- Update pghistory dependency from 0007 to 0006 in account migrations
- Add docstrings and remove unused imports in htmx_forms.py
- Add DJANGO_SETTINGS_MODULE bash commands to Claude settings
- Add state transition definitions for ride statuses

backend/apps/parks/apps.py

@@ -7,3 +7,11 @@ class ParksConfig(AppConfig):
 
     def ready(self):
         import apps.parks.signals  # noqa: F401 - Register signals
+        import apps.parks.choices  # noqa: F401 - Register choices
+        from apps.core.state_machine import apply_state_machine
+        from apps.parks.models import Park
+
+        # Register FSM transitions for Park
+        apply_state_machine(
+            Park, field_name="status", choice_group="statuses", domain="parks"
+        )