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/info.py

@@ -8,14 +8,15 @@ This module provides:
 """
 
 import logging
-from fastapi import APIRouter, Path, Depends
-from sqlalchemy.orm import Session
+
+from fastapi import APIRouter, Depends, Path
 from sqlalchemy import func
+from sqlalchemy.orm import Session
 
 from app.core.database import get_db
 from app.exceptions import VendorNotFoundException
-from models.schema.vendor import VendorResponse, VendorDetailResponse
 from models.database.vendor import Vendor
+from models.schema.vendor import VendorDetailResponse, VendorResponse
 
 router = APIRouter()
 logger = logging.getLogger(__name__)
@@ -35,10 +36,14 @@ def _get_vendor_by_code(db: Session, vendor_code: str) -> Vendor:
     Raises:
         VendorNotFoundException: If vendor not found or inactive
     """
-    vendor = db.query(Vendor).filter(
-        func.upper(Vendor.vendor_code) == vendor_code.upper(),
-        Vendor.is_active == True
-    ).first()
+    vendor = (
+        db.query(Vendor)
+        .filter(
+            func.upper(Vendor.vendor_code) == vendor_code.upper(),
+            Vendor.is_active == True,
+        )
+        .first()
+    )
 
     if not vendor:
         logger.warning(f"Vendor not found or inactive: {vendor_code}")
@@ -49,8 +54,8 @@ def _get_vendor_by_code(db: Session, vendor_code: str) -> Vendor:
 
 @router.get("/{vendor_code}", response_model=VendorDetailResponse)
 def get_vendor_info(
-        vendor_code: str = Path(..., description="Vendor code"),
-        db: Session = Depends(get_db)
+    vendor_code: str = Path(..., description="Vendor code"),
+    db: Session = Depends(get_db),
 ):
     """
     Get public vendor information by vendor code.