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/migrations/0001_initial.py

@@ -14,7 +14,7 @@ class Migration(migrations.Migration):
     initial = True
 
     dependencies = [
-        ("pghistory", "0007_auto_20250421_0444"),
+        ("pghistory", "0006_delete_aggregateevent"),
         migrations.swappable_dependency(settings.AUTH_USER_MODEL),
     ]
 

backend/apps/parks/migrations/0004_fix_pghistory_triggers.py

@@ -10,7 +10,7 @@ from django.db import migrations, models
 class Migration(migrations.Migration):
     dependencies = [
         ("parks", "0003_add_business_constraints"),
-        ("pghistory", "0007_auto_20250421_0444"),
+        ("pghistory", "0006_delete_aggregateevent"),
     ]
 
     operations = [

backend/apps/parks/migrations/0007_companyheadquartersevent_parklocationevent_and_more.py

@@ -10,7 +10,7 @@ from django.db import migrations, models
 class Migration(migrations.Migration):
     dependencies = [
         ("parks", "0006_remove_company_insert_insert_and_more"),
-        ("pghistory", "0007_auto_20250421_0444"),
+        ("pghistory", "0006_delete_aggregateevent"),
     ]
 
     operations = [

backend/apps/parks/migrations/0008_parkphoto_parkphotoevent_and_more.py

@@ -11,7 +11,7 @@ from django.db import migrations, models
 class Migration(migrations.Migration):
     dependencies = [
         ("parks", "0007_companyheadquartersevent_parklocationevent_and_more"),
-        ("pghistory", "0007_auto_20250421_0444"),
+        ("pghistory", "0006_delete_aggregateevent"),
         migrations.swappable_dependency(settings.AUTH_USER_MODEL),
     ]