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>

scripts/init_production.py

@@ -17,29 +17,30 @@ This script is idempotent - safe to run multiple times.
 """
 
 import sys
-from pathlib import Path
 from datetime import datetime, timezone
+from pathlib import Path
 
 # Add project root to path
 project_root = Path(__file__).parent.parent
 sys.path.insert(0, str(project_root))
 
-from sqlalchemy.orm import Session
 from sqlalchemy import select
+from sqlalchemy.orm import Session
 
+from app.core.config import (print_environment_info, settings,
+                             validate_production_settings)
 from app.core.database import SessionLocal
-from app.core.config import settings, print_environment_info, validate_production_settings
-from app.core.environment import is_production, get_environment
-from models.database.user import User
-from models.database.admin import AdminSetting
-from middleware.auth import AuthManager
+from app.core.environment import get_environment, is_production
 from app.core.permissions import PermissionGroups
-
+from middleware.auth import AuthManager
+from models.database.admin import AdminSetting
+from models.database.user import User
 
 # =============================================================================
 # HELPER FUNCTIONS
 # =============================================================================
 
+
 def print_header(text: str):
     """Print formatted header."""
     print("\n" + "=" * 70)
@@ -71,6 +72,7 @@ def print_error(text: str):
 # INITIALIZATION FUNCTIONS
 # =============================================================================
 
+
 def create_admin_user(db: Session, auth_manager: AuthManager) -> User:
     """Create or get the platform admin user."""
 
@@ -206,9 +208,7 @@ def create_admin_settings(db: Session) -> int:
     for setting_data in default_settings:
         # Check if setting already exists
         existing = db.execute(
-            select(AdminSetting).where(
-                AdminSetting.key == setting_data["key"]
-            )
+            select(AdminSetting).where(AdminSetting.key == setting_data["key"])
         ).scalar_one_or_none()
 
         if not existing:
@@ -281,6 +281,7 @@ def verify_rbac_schema(db: Session) -> bool:
 # MAIN INITIALIZATION
 # =============================================================================
 
+
 def initialize_production(db: Session, auth_manager: AuthManager):
     """Initialize production database with essential data."""
 
@@ -362,6 +363,7 @@ def print_summary(db: Session):
 # MAIN ENTRY POINT
 # =============================================================================
 
+
 def main():
     """Main entry point."""
 
@@ -405,6 +407,7 @@ def main():
         print_header("❌ INITIALIZATION FAILED")
         print(f"\nError: {e}\n")
         import traceback
+
         traceback.print_exc()
         sys.exit(1)