[BUG]: add_response_to_json() crashes when appending to non-list field

[SHANKAR8983]

name: Bug Report
about: Create a report to help us improve FireForm.
title: "[BUG]: add_response_to_json() crashes when appending to non-list field"
labels: bug
assignees: ''

Describe the Bug
The method add_response_to_json() assumes that existing field values are always lists. However, when a field already contains a string value, attempting to call .append() on it results in an AttributeError.

This causes the application to crash when multiple values are assigned to the same field.

👣 Steps to Reproduce

1. Initialize JSON like:
   {
   "name": "John"
   }
2. Call:
   add_response_to_json("name", "Mike")

📉 Expected Behavior
The existing string value should be converted into a list and then appended:
["John", "Mike"]

🖥️ Actual Behavior
Raises:
AttributeError: 'str' object has no attribute 'append'

🖥️ Environment Information
OS: Any
Python Version: 3.x
Module: src/llm.py

📋 Error Logs
AttributeError: 'str' object has no attribute 'append'

🕵️ Possible Fix
Add type checking before appending:

if field in self._json: if isinstance(self._json[field], list): self._json[field].append(parsed_value) else: self._json[field] = [self._json[field], parsed_value] else: self._json[field] = parsed_value