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>

app/modules/inventory/services/inventory_service.py

@@ -6,14 +6,14 @@ from sqlalchemy import func
 from sqlalchemy.orm import Session
 
 from app.exceptions import ValidationException
+from app.modules.catalog.exceptions import ProductNotFoundException
+from app.modules.catalog.models import Product
 from app.modules.inventory.exceptions import (
     InsufficientInventoryException,
     InvalidQuantityException,
     InventoryNotFoundException,
     InventoryValidationException,
 )
-from app.modules.catalog.exceptions import ProductNotFoundException
-from app.modules.tenancy.exceptions import StoreNotFoundException
 from app.modules.inventory.models.inventory import Inventory
 from app.modules.inventory.schemas.inventory import (
     AdminInventoryItem,
@@ -30,7 +30,7 @@ from app.modules.inventory.schemas.inventory import (
     InventoryUpdate,
     ProductInventorySummary,
 )
-from app.modules.catalog.models import Product
+from app.modules.tenancy.exceptions import StoreNotFoundException
 from app.modules.tenancy.models import Store
 
 logger = logging.getLogger(__name__)
@@ -217,7 +217,7 @@ class InventoryService:
         """
         try:
             # Validate product
-            product = self._get_store_product(db, store_id, reserve_data.product_id)
+            self._get_store_product(db, store_id, reserve_data.product_id)
 
             # Validate location and quantity
             location = self._validate_location(reserve_data.location)
@@ -279,7 +279,7 @@ class InventoryService:
         """
         try:
             # Validate product
-            product = self._get_store_product(db, store_id, reserve_data.product_id)
+            self._get_store_product(db, store_id, reserve_data.product_id)
 
             location = self._validate_location(reserve_data.location)
             self._validate_quantity(reserve_data.quantity, allow_zero=False)
@@ -338,7 +338,7 @@ class InventoryService:
             Updated Inventory object
         """
         try:
-            product = self._get_store_product(db, store_id, reserve_data.product_id)
+            self._get_store_product(db, store_id, reserve_data.product_id)
             location = self._validate_location(reserve_data.location)
             self._validate_quantity(reserve_data.quantity, allow_zero=False)