Refactor code for improved readability and consistency

- Cleaned up whitespace and formatting across multiple files for better readability.

app/services/decorators.py

@@ -12,14 +12,14 @@ def get_user_from_jwt() -> dict[str, Any] | None:
     try:
         # Try to verify JWT token in request - this sets up the context
         verify_jwt_in_request()
-        
+
         current_user_id = get_jwt_identity()
         if not current_user_id:
             return None
 
         # Query database for user data instead of using JWT claims
         from app.models.user import User
-        
+
         user = User.query.get(int(current_user_id))
         if not user or not user.is_active:
             return None
@@ -70,7 +70,7 @@ def get_user_from_api_token() -> dict[str, Any] | None:
                 providers.append("password")
             if user.api_token:
                 providers.append("api_token")
-            
+
             return {
                 "id": str(user.id),
                 "email": user.email,
@@ -148,22 +148,23 @@ def require_role(required_role: str):
 
 def require_credits(credits_needed: int):
     """Decorator to require and deduct credits for routes."""
+
     def decorator(f):
         @wraps(f)
         def wrapper(*args, **kwargs):
             from app.models.user import User
             from app.database import db
-            
+
             # First check authentication
             user_data = get_current_user()
             if not user_data:
                 return jsonify({"error": "Authentication required"}), 401
-            
+
             # Get the actual user from database to check/update credits
             user = User.query.get(int(user_data["id"]))
             if not user or not user.is_active:
                 return jsonify({"error": "User not found or inactive"}), 401
-            
+
             # Check if user has enough credits
             if user.credits < credits_needed:
                 return (
@@ -174,15 +175,16 @@ def require_credits(credits_needed: int):
                     ),
                     402,  # Payment Required status code
                 )
-            
+
             # Deduct credits
             user.credits -= credits_needed
             db.session.commit()
-            
+
             # Execute the function
             result = f(*args, **kwargs)
-            
+
             return result
-        
+
         return wrapper
+
     return decorator