fix: add missing db argument to get_admin_context calls

The get_admin_context function signature changed to require db as
the second argument, but many admin route handlers were still using
the old signature (request, current_user).

Updated all occurrences across modules:
- core, catalog, dev_tools, inventory, customers, messaging
- billing, tenancy, monitoring, analytics, orders, marketplace

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/modules/dev_tools/routes/pages/admin.py

@@ -43,7 +43,7 @@ async def admin_components_page(
     """
     return templates.TemplateResponse(
         "dev_tools/admin/components.html",
-        get_admin_context(request, current_user),
+        get_admin_context(request, db, current_user),
     )
 
 
@@ -59,7 +59,7 @@ async def admin_icons_page(
     """
     return templates.TemplateResponse(
         "dev_tools/admin/icons.html",
-        get_admin_context(request, current_user),
+        get_admin_context(request, db, current_user),
     )
 
 
@@ -75,7 +75,7 @@ async def admin_testing_dashboard(
     """
     return templates.TemplateResponse(
         "dev_tools/admin/testing-dashboard.html",
-        get_admin_context(request, current_user),
+        get_admin_context(request, db, current_user),
     )
 
 
@@ -91,7 +91,7 @@ async def admin_testing_hub(
     """
     return templates.TemplateResponse(
         "dev_tools/admin/testing-hub.html",
-        get_admin_context(request, current_user),
+        get_admin_context(request, db, current_user),
     )
 
 
@@ -107,7 +107,7 @@ async def admin_test_auth_flow(
     """
     return templates.TemplateResponse(
         "dev_tools/admin/test-auth-flow.html",
-        get_admin_context(request, current_user),
+        get_admin_context(request, db, current_user),
     )
 
 
@@ -127,5 +127,5 @@ async def admin_test_vendors_users_migration(
     """
     return templates.TemplateResponse(
         "dev_tools/admin/test-vendors-users-migration.html",
-        get_admin_context(request, current_user),
+        get_admin_context(request, db, current_user),
     )