style: apply black and isort formatting across entire codebase

- Standardize quote style (single to double quotes)
- Reorder and group imports alphabetically
- Fix line breaks and indentation for consistency
- Apply PEP 8 formatting standards

Also updated Makefile to exclude both venv and .venv from code quality checks.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/api/v1/admin/__init__.py

@@ -24,21 +24,9 @@ IMPORTANT:
 from fastapi import APIRouter
 
 # Import all admin routers
-from . import (
-    auth,
-    vendors,
-    vendor_domains,
-    vendor_themes,
-    users,
-    dashboard,
-    marketplace,
-    monitoring,
-    audit,
-    settings,
-    notifications,
-    content_pages,
-    code_quality
-)
+from . import (audit, auth, code_quality, content_pages, dashboard,
+               marketplace, monitoring, notifications, settings, users,
+               vendor_domains, vendor_themes, vendors)
 
 # Create admin router
 router = APIRouter()
@@ -66,7 +54,9 @@ router.include_router(vendor_domains.router, tags=["admin-vendor-domains"])
 router.include_router(vendor_themes.router, tags=["admin-vendor-themes"])
 
 # Include content pages management endpoints
-router.include_router(content_pages.router, prefix="/content-pages", tags=["admin-content-pages"])
+router.include_router(
+    content_pages.router, prefix="/content-pages", tags=["admin-content-pages"]
+)
 
 
 # ============================================================================
@@ -115,7 +105,9 @@ router.include_router(notifications.router, tags=["admin-notifications"])
 # ============================================================================
 
 # Include code quality and architecture validation endpoints
-router.include_router(code_quality.router, prefix="/code-quality", tags=["admin-code-quality"])
+router.include_router(
+    code_quality.router, prefix="/code-quality", tags=["admin-code-quality"]
+)
 
 # Export the router
 __all__ = ["router"]