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/vendor/auth.py

@@ -13,19 +13,20 @@ This prevents:
 """
 
 import logging
+
 from fastapi import APIRouter, Depends, Request, Response
+from pydantic import BaseModel
 from sqlalchemy.orm import Session
 
-from app.core.database import get_db
-from app.services.auth_service import auth_service
-from app.exceptions import InvalidCredentialsException
-from middleware.vendor_context import get_current_vendor
-from models.schema.auth import UserLogin
-from models.database.vendor import Vendor, VendorUser, Role
-from models.database.user import User
-from pydantic import BaseModel
 from app.api.deps import get_current_vendor_api
+from app.core.database import get_db
 from app.core.environment import should_use_secure_cookies
+from app.exceptions import InvalidCredentialsException
+from app.services.auth_service import auth_service
+from middleware.vendor_context import get_current_vendor
+from models.database.user import User
+from models.database.vendor import Role, Vendor, VendorUser
+from models.schema.auth import UserLogin
 
 router = APIRouter(prefix="/auth")
 logger = logging.getLogger(__name__)
@@ -43,10 +44,10 @@ class VendorLoginResponse(BaseModel):
 
 @router.post("/login", response_model=VendorLoginResponse)
 def vendor_login(
-        user_credentials: UserLogin,
-        request: Request,
-        response: Response,
-        db: Session = Depends(get_db)
+    user_credentials: UserLogin,
+    request: Request,
+    response: Response,
+    db: Session = Depends(get_db),
 ):
     """
     Vendor team member login.
@@ -64,13 +65,16 @@ def vendor_login(
     vendor = get_current_vendor(request)
 
     # If no vendor from middleware, try to get from request body
-    if not vendor and hasattr(user_credentials, 'vendor_code'):
-        vendor_code = getattr(user_credentials, 'vendor_code', None)
+    if not vendor and hasattr(user_credentials, "vendor_code"):
+        vendor_code = getattr(user_credentials, "vendor_code", None)
         if vendor_code:
-            vendor = db.query(Vendor).filter(
-                Vendor.vendor_code == vendor_code.upper(),
-                Vendor.is_active == True
-            ).first()
+            vendor = (
+                db.query(Vendor)
+                .filter(
+                    Vendor.vendor_code == vendor_code.upper(), Vendor.is_active == True
+                )
+                .first()
+            )
 
     # Authenticate user
     login_result = auth_service.login_user(db=db, user_credentials=user_credentials)
@@ -79,7 +83,9 @@ def vendor_login(
     # CRITICAL: Prevent admin users from using vendor login
     if user.role == "admin":
         logger.warning(f"Admin user attempted vendor login: {user.username}")
-        raise InvalidCredentialsException("Admins cannot access vendor portal. Please use admin portal.")
+        raise InvalidCredentialsException(
+            "Admins cannot access vendor portal. Please use admin portal."
+        )
 
     # Determine vendor and role
     vendor_role = "Member"
@@ -92,11 +98,16 @@ def vendor_login(
             vendor_role = "Owner"
         else:
             # Check if user is team member
-            vendor_user = db.query(VendorUser).join(Role).filter(
-                VendorUser.user_id == user.id,
-                VendorUser.vendor_id == vendor.id,
-                VendorUser.is_active == True
-            ).first()
+            vendor_user = (
+                db.query(VendorUser)
+                .join(Role)
+                .filter(
+                    VendorUser.user_id == user.id,
+                    VendorUser.vendor_id == vendor.id,
+                    VendorUser.is_active == True,
+                )
+                .first()
+            )
 
             if vendor_user:
                 vendor_role = vendor_user.role.name
@@ -117,17 +128,14 @@ def vendor_login(
         # Check vendor memberships
         elif user.vendor_memberships:
             active_membership = next(
-                (vm for vm in user.vendor_memberships if vm.is_active),
-                None
+                (vm for vm in user.vendor_memberships if vm.is_active), None
             )
             if active_membership:
                 vendor = active_membership.vendor
                 vendor_role = active_membership.role.name
 
         if not vendor:
-            raise InvalidCredentialsException(
-                "User is not associated with any vendor"
-            )
+            raise InvalidCredentialsException("User is not associated with any vendor")
 
     logger.info(
         f"Vendor team login successful: {user.username} "
@@ -161,7 +169,7 @@ def vendor_login(
             "username": user.username,
             "email": user.email,
             "role": user.role,
-            "is_active": user.is_active
+            "is_active": user.is_active,
         },
         vendor={
             "id": vendor.id,
@@ -169,9 +177,9 @@ def vendor_login(
             "subdomain": vendor.subdomain,
             "name": vendor.name,
             "is_active": vendor.is_active,
-            "is_verified": vendor.is_verified
+            "is_verified": vendor.is_verified,
         },
-        vendor_role=vendor_role
+        vendor_role=vendor_role,
     )
 
 
@@ -198,8 +206,7 @@ def vendor_logout(response: Response):
 
 @router.get("/me")
 def get_current_vendor_user(
-        user: User = Depends(get_current_vendor_api),
-        db: Session = Depends(get_db)
+    user: User = Depends(get_current_vendor_api), db: Session = Depends(get_db)
 ):
     """
     Get current authenticated vendor user.
@@ -212,5 +219,5 @@ def get_current_vendor_user(
         "username": user.username,
         "email": user.email,
         "role": user.role,
-        "is_active": user.is_active
+        "is_active": user.is_active,
     }