{
  "type": "textarea",
  "key": "chatbot_system_prompt",
  "constant": "CHATBOT_SYSTEM_PROMPT",
  "description": "System prompt to prepend to all messages (optional)",
  "required": false,
  "placeholder": "You are a helpful assistant for FeatherPanel...",
  "validation": "string|max:1000",
  "options": [],
  "category": "chatbot",
  "sensitive": false
}