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/admin/vendors.py

@@ -6,28 +6,24 @@ Vendor management endpoints for admin.
 import logging
 from typing import Optional
 
-from fastapi import APIRouter, Depends, Query, Path, Body
+from fastapi import APIRouter, Body, Depends, Path, Query
+from sqlalchemy import func
 from sqlalchemy.orm import Session
 
 from app.api.deps import get_current_admin_api
 from app.core.database import get_db
+from app.exceptions import (ConfirmationRequiredException,
+                            VendorNotFoundException)
 from app.services.admin_service import admin_service
 from app.services.stats_service import stats_service
-from app.exceptions import VendorNotFoundException, ConfirmationRequiredException
-from models.schema.stats import VendorStatsResponse
-from models.schema.vendor import (
-    VendorListResponse,
-    VendorResponse,
-    VendorDetailResponse,
-    VendorCreate,
-    VendorCreateResponse,
-    VendorUpdate,
-    VendorTransferOwnership,
-    VendorTransferOwnershipResponse,
-)
 from models.database.user import User
 from models.database.vendor import Vendor
-from sqlalchemy import func
+from models.schema.stats import VendorStatsResponse
+from models.schema.vendor import (VendorCreate, VendorCreateResponse,
+                                  VendorDetailResponse, VendorListResponse,
+                                  VendorResponse, VendorTransferOwnership,
+                                  VendorTransferOwnershipResponse,
+                                  VendorUpdate)
 
 router = APIRouter(prefix="/vendors")
 logger = logging.getLogger(__name__)
@@ -60,9 +56,11 @@ def _get_vendor_by_identifier(db: Session, identifier: str) -> Vendor:
         pass
 
     # Try as vendor_code (case-insensitive)
-    vendor = db.query(Vendor).filter(
-        func.upper(Vendor.vendor_code) == identifier.upper()
-    ).first()
+    vendor = (
+        db.query(Vendor)
+        .filter(func.upper(Vendor.vendor_code) == identifier.upper())
+        .first()
+    )
 
     if not vendor:
         raise VendorNotFoundException(identifier, identifier_type="code")
@@ -72,9 +70,9 @@ def _get_vendor_by_identifier(db: Session, identifier: str) -> Vendor:
 
 @router.post("", response_model=VendorCreateResponse)
 def create_vendor_with_owner(
-        vendor_data: VendorCreate,
-        db: Session = Depends(get_db),
-        current_admin: User = Depends(get_current_admin_api),
+    vendor_data: VendorCreate,
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin_api),
 ):
     """
     Create a new vendor with owner user account (Admin only).
@@ -93,8 +91,7 @@ def create_vendor_with_owner(
     Returns vendor details with owner credentials.
     """
     vendor, owner_user, temp_password = admin_service.create_vendor_with_owner(
-        db=db,
-        vendor_data=vendor_data
+        db=db, vendor_data=vendor_data
     )
 
     return VendorCreateResponse(
@@ -121,19 +118,19 @@ def create_vendor_with_owner(
         owner_email=owner_user.email,
         owner_username=owner_user.username,
         temporary_password=temp_password,
-        login_url=f"http://localhost:8000/vendor/{vendor.subdomain}/login"
+        login_url=f"http://localhost:8000/vendor/{vendor.subdomain}/login",
     )
 
 
 @router.get("", response_model=VendorListResponse)
 def get_all_vendors_admin(
-        skip: int = Query(0, ge=0),
-        limit: int = Query(100, ge=1, le=1000),
-        search: Optional[str] = Query(None, description="Search by name or vendor code"),
-        is_active: Optional[bool] = Query(None),
-        is_verified: Optional[bool] = Query(None),
-        db: Session = Depends(get_db),
-        current_admin: User = Depends(get_current_admin_api),
+    skip: int = Query(0, ge=0),
+    limit: int = Query(100, ge=1, le=1000),
+    search: Optional[str] = Query(None, description="Search by name or vendor code"),
+    is_active: Optional[bool] = Query(None),
+    is_verified: Optional[bool] = Query(None),
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin_api),
 ):
     """Get all vendors with filtering (Admin only)."""
     vendors, total = admin_service.get_all_vendors(
@@ -142,15 +139,15 @@ def get_all_vendors_admin(
         limit=limit,
         search=search,
         is_active=is_active,
-        is_verified=is_verified
+        is_verified=is_verified,
     )
     return VendorListResponse(vendors=vendors, total=total, skip=skip, limit=limit)
 
 
 @router.get("/stats", response_model=VendorStatsResponse)
 def get_vendor_statistics_endpoint(
-        db: Session = Depends(get_db),
-        current_admin: User = Depends(get_current_admin_api),
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin_api),
 ):
     """Get vendor statistics for admin dashboard (Admin only)."""
     stats = stats_service.get_vendor_statistics(db)
@@ -165,9 +162,9 @@ def get_vendor_statistics_endpoint(
 
 @router.get("/{vendor_identifier}", response_model=VendorDetailResponse)
 def get_vendor_details(
-        vendor_identifier: str = Path(..., description="Vendor ID or vendor_code"),
-        db: Session = Depends(get_db),
-        current_admin: User = Depends(get_current_admin_api),
+    vendor_identifier: str = Path(..., description="Vendor ID or vendor_code"),
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin_api),
 ):
     """
     Get detailed vendor information including owner details (Admin only).
@@ -208,10 +205,10 @@ def get_vendor_details(
 
 @router.put("/{vendor_identifier}", response_model=VendorDetailResponse)
 def update_vendor(
-        vendor_identifier: str = Path(..., description="Vendor ID or vendor_code"),
-        vendor_update: VendorUpdate = Body(...),
-        db: Session = Depends(get_db),
-        current_admin: User = Depends(get_current_admin_api),
+    vendor_identifier: str = Path(..., description="Vendor ID or vendor_code"),
+    vendor_update: VendorUpdate = Body(...),
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin_api),
 ):
     """
     Update vendor information (Admin only).
@@ -257,12 +254,15 @@ def update_vendor(
     )
 
 
-@router.post("/{vendor_identifier}/transfer-ownership", response_model=VendorTransferOwnershipResponse)
+@router.post(
+    "/{vendor_identifier}/transfer-ownership",
+    response_model=VendorTransferOwnershipResponse,
+)
 def transfer_vendor_ownership(
-        vendor_identifier: str = Path(..., description="Vendor ID or vendor_code"),
-        transfer_data: VendorTransferOwnership = Body(...),
-        db: Session = Depends(get_db),
-        current_admin: User = Depends(get_current_admin_api),
+    vendor_identifier: str = Path(..., description="Vendor ID or vendor_code"),
+    transfer_data: VendorTransferOwnership = Body(...),
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin_api),
 ):
     """
     Transfer vendor ownership to another user (Admin only).
@@ -311,10 +311,10 @@ def transfer_vendor_ownership(
 
 @router.put("/{vendor_identifier}/verification", response_model=VendorDetailResponse)
 def toggle_vendor_verification(
-        vendor_identifier: str = Path(..., description="Vendor ID or vendor_code"),
-        verification_data: dict = Body(..., example={"is_verified": True}),
-        db: Session = Depends(get_db),
-        current_admin: User = Depends(get_current_admin_api),
+    vendor_identifier: str = Path(..., description="Vendor ID or vendor_code"),
+    verification_data: dict = Body(..., example={"is_verified": True}),
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin_api),
 ):
     """
     Toggle vendor verification status (Admin only).
@@ -362,10 +362,10 @@ def toggle_vendor_verification(
 
 @router.put("/{vendor_identifier}/status", response_model=VendorDetailResponse)
 def toggle_vendor_status(
-        vendor_identifier: str = Path(..., description="Vendor ID or vendor_code"),
-        status_data: dict = Body(..., example={"is_active": True}),
-        db: Session = Depends(get_db),
-        current_admin: User = Depends(get_current_admin_api),
+    vendor_identifier: str = Path(..., description="Vendor ID or vendor_code"),
+    status_data: dict = Body(..., example={"is_active": True}),
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin_api),
 ):
     """
     Toggle vendor active status (Admin only).
@@ -413,10 +413,10 @@ def toggle_vendor_status(
 
 @router.delete("/{vendor_identifier}")
 def delete_vendor(
-        vendor_identifier: str = Path(..., description="Vendor ID or vendor_code"),
-        confirm: bool = Query(False, description="Must be true to confirm deletion"),
-        db: Session = Depends(get_db),
-        current_admin: User = Depends(get_current_admin_api),
+    vendor_identifier: str = Path(..., description="Vendor ID or vendor_code"),
+    confirm: bool = Query(False, description="Must be true to confirm deletion"),
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin_api),
 ):
     """
     Delete vendor and all associated data (Admin only).
@@ -436,7 +436,7 @@ def delete_vendor(
     if not confirm:
         raise ConfirmationRequiredException(
             operation="delete_vendor",
-            message="Deletion requires confirmation parameter: confirm=true"
+            message="Deletion requires confirmation parameter: confirm=true",
         )
 
     vendor = _get_vendor_by_identifier(db, vendor_identifier)