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/profile.py

@@ -4,16 +4,17 @@ Vendor profile management endpoints.
 """
 
 import logging
+
 from fastapi import APIRouter, Depends, HTTPException
 from sqlalchemy.orm import Session
 
 from app.api.deps import get_current_vendor_api
 from app.core.database import get_db
-from middleware.vendor_context import require_vendor_context
 from app.services.vendor_service import vendor_service
-from models.schema.vendor import VendorUpdate, VendorResponse
+from middleware.vendor_context import require_vendor_context
 from models.database.user import User
 from models.database.vendor import Vendor
+from models.schema.vendor import VendorResponse, VendorUpdate
 
 router = APIRouter(prefix="/profile")
 logger = logging.getLogger(__name__)
@@ -21,9 +22,9 @@ logger = logging.getLogger(__name__)
 
 @router.get("", response_model=VendorResponse)
 def get_vendor_profile(
-        vendor: Vendor = Depends(require_vendor_context()),
-        current_user: User = Depends(get_current_vendor_api),
-        db: Session = Depends(get_db),
+    vendor: Vendor = Depends(require_vendor_context()),
+    current_user: User = Depends(get_current_vendor_api),
+    db: Session = Depends(get_db),
 ):
     """Get current vendor profile information."""
     return vendor
@@ -31,10 +32,10 @@ def get_vendor_profile(
 
 @router.put("", response_model=VendorResponse)
 def update_vendor_profile(
-        vendor_update: VendorUpdate,
-        vendor: Vendor = Depends(require_vendor_context()),
-        current_user: User = Depends(get_current_vendor_api),
-        db: Session = Depends(get_db),
+    vendor_update: VendorUpdate,
+    vendor: Vendor = Depends(require_vendor_context()),
+    current_user: User = Depends(get_current_vendor_api),
+    db: Session = Depends(get_db),
 ):
     """Update vendor profile information."""
     # Verify user has permission to update vendor