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/unit/middleware/test_logging.py

@@ -67,7 +67,7 @@ class TestLoggingMiddleware:
         call_next = AsyncMock(return_value=response)
 
         with patch("middleware.logging.logger") as mock_logger:
-            result = await middleware.dispatch(request, call_next)
+            await middleware.dispatch(request, call_next)
 
             # Verify response was logged
             assert mock_logger.info.call_count >= 2  # Request + Response
@@ -91,7 +91,7 @@ class TestLoggingMiddleware:
         call_next = AsyncMock(return_value=response)
 
         with patch("middleware.logging.logger"):
-            result = await middleware.dispatch(request, call_next)
+            await middleware.dispatch(request, call_next)
 
         assert "X-Process-Time" in response.headers
         # Should be a numeric string
@@ -187,7 +187,7 @@ class TestLoggingEdgeCases:
         call_next = AsyncMock(return_value=response)
 
         with patch("middleware.logging.logger"):
-            result = await middleware.dispatch(request, call_next)
+            await middleware.dispatch(request, call_next)
 
         # Should still have process time, even if very small
         assert "X-Process-Time" in response.headers

tests/unit/middleware/test_merchant_domain_resolution.py

@@ -11,16 +11,14 @@ Tests cover:
 
 import uuid
 from datetime import UTC, datetime
-from unittest.mock import Mock
 
 import pytest
 
-from app.modules.tenancy.models import Platform, Store, StoreDomain
+from app.modules.tenancy.models import Store, StoreDomain
 from app.modules.tenancy.models.merchant_domain import MerchantDomain
 from middleware.platform_context import PlatformContextManager
 from middleware.store_context import StoreContextManager
 
-
 # =============================================================================
 # PLATFORM CONTEXT - MERCHANT DOMAIN RESOLUTION
 # =============================================================================