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/marketplace/routes/pages/admin.py

@@ -41,7 +41,7 @@ async def admin_imports_page(
     """
     return templates.TemplateResponse(
         "marketplace/admin/imports.html",
-        get_admin_context(request, current_user),
+        get_admin_context(request, db, current_user),
     )
 
 
@@ -77,7 +77,7 @@ async def admin_marketplace_page(
     """
     return templates.TemplateResponse(
         "marketplace/admin/marketplace.html",
-        get_admin_context(request, current_user),
+        get_admin_context(request, db, current_user),
     )
 
 
@@ -103,7 +103,7 @@ async def admin_marketplace_letzshop_page(
     """
     return templates.TemplateResponse(
         "marketplace/admin/marketplace-letzshop.html",
-        get_admin_context(request, current_user),
+        get_admin_context(request, db, current_user),
     )
 
 
@@ -186,7 +186,7 @@ async def admin_letzshop_vendor_directory_page(
     """
     return templates.TemplateResponse(
         "marketplace/admin/letzshop-vendor-directory.html",
-        get_admin_context(request, current_user),
+        get_admin_context(request, db, current_user),
     )
 
 
@@ -211,7 +211,7 @@ async def admin_marketplace_products_page(
     """
     return templates.TemplateResponse(
         "marketplace/admin/marketplace-products.html",
-        get_admin_context(request, current_user),
+        get_admin_context(request, db, current_user),
     )