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/services/test_order_service.py

@@ -12,22 +12,17 @@ Tests cover:
 """
 
 from datetime import UTC, datetime
-from unittest.mock import MagicMock, patch
+from unittest.mock import patch
 
 import pytest
 
-from app.exceptions import ValidationException
-from app.modules.customers.exceptions import CustomerNotFoundException
 from app.modules.orders.exceptions import OrderNotFoundException
+from app.modules.orders.models import Order
 from app.modules.orders.services.order_service import (
     PLACEHOLDER_GTIN,
-    PLACEHOLDER_MARKETPLACE_ID,
     OrderService,
     order_service,
 )
-from app.modules.customers.models.customer import Customer
-from app.modules.orders.models import Order, OrderItem
-
 
 # Default address fields required by Order model
 DEFAULT_ADDRESS = {