refactor(cart): remove duplicate endpoint for cart retrieval

The endpoint `/appointment/{customer_id}` was redundant since the same functionality is already provided by `/appointment` which uses the customer ID from the auth token. This simplifies the API surface while maintaining security.

app/routers/cart.py

@@ -44,22 +44,7 @@ async def get_from_cart(current_user: dict = Depends(get_current_user)):
         return await retrieve_appointment_from_cart(customer_id)
     except Exception as e:
         raise HTTPException(status_code=500, detail=f"Failed to retrieve from cart: {e}")
-
-@router.get("/appointment/{customer_id}")
-async def get_from_cart_by_customer_id(customer_id: str, current_user: dict = Depends(get_current_user)):
-    try:
-        # Extract customer_id from current_user token
-        token_customer_id = current_user.get("sub")
-        if not token_customer_id:
-            raise HTTPException(status_code=401, detail="Invalid token: missing customer ID")
-        
-        # For security, ensure the path customer_id matches the token customer_id
-        if customer_id != token_customer_id:
-            raise HTTPException(status_code=403, detail="Access denied: cannot access other customer's cart")
-        
-        return await retrieve_appointment_from_cart(customer_id)
-    except Exception as e:
-        raise HTTPException(status_code=500, detail=f"Failed to retrieve from cart: {e}")
+ 
 
 @router.delete("/appointment")
 async def delete_from_cart(current_user: dict = Depends(get_current_user)):