fix(lint): auto-fix ruff violations and tune lint rules

- Auto-fixed 4,496 lint issues (import sorting, modern syntax, etc.)
- Added ignore rules for patterns intentional in this codebase:
  E402 (late imports), E712 (SQLAlchemy filters), B904 (raise from),
  SIM108/SIM105/SIM117 (readability preferences)
- Added per-file ignores for tests and scripts
- Excluded broken scripts/rename_terminology.py (has curly quotes)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/integration/middleware/conftest.py

@@ -18,20 +18,20 @@ import pytest
 from fastapi.testclient import TestClient
 
 from app.core.database import get_db
-from main import app
-from app.modules.tenancy.models import Merchant
-from app.modules.tenancy.models import Store
-from app.modules.tenancy.models import StoreDomain
 from app.modules.cms.models import StoreTheme
+from app.modules.tenancy.models import Merchant, Store, StoreDomain
+from main import app
 
 # Register test routes for middleware tests
 from tests.integration.middleware.middleware_test_routes import (
     admin_router,
     api_router,
-    router as test_router,
     shop_router,
     store_router,
 )
+from tests.integration.middleware.middleware_test_routes import (
+    router as test_router,
+)
 
 # Include the test routers in the app (only once)
 if not any(r.path.startswith("/middleware-test") for r in app.routes if hasattr(r, "path")):

tests/integration/middleware/test_merchant_domain_flow.py

@@ -15,7 +15,7 @@ from datetime import UTC, datetime
 
 import pytest
 
-from app.modules.tenancy.models import Merchant, Store, StoreDomain
+from app.modules.tenancy.models import Store, StoreDomain
 from app.modules.tenancy.models.merchant_domain import MerchantDomain