📋 Card Action Events (card.action.trigger) Not Supported by Lark

[IvyGain]

Description

The code at remote_server.py:538-612 handles card.action.trigger events for interactive card button clicks, but this event type does not exist in the Lark Open Platform's event subscription list.

Problem

# Line 538-539
elif event_type == "card.action.trigger":
    action = event.get("action", {})

However, according to Lark documentation and the user's investigation, card.action.trigger is NOT available as a subscribable event in Lark Open Platform.

Impact

All interactive card button functionality is broken:

• Confirmation buttons won't work
• Action selection buttons won't work
• The entire Minutes processing flow that relies on buttons is non-functional

Investigation Needed

1. Research the correct way to handle card action callbacks in Lark
2. Check if there's an alternative mechanism (possibly direct HTTP callback URL)

Possible Solutions

Option 1: Use Card Callback URL

Interactive cards may use a different callback mechanism. The card configuration might need a callback_url property:

{
  "config": {
    "wide_screen_mode": true
  },
  "callback": {
    "url": "https://your-server.com/webhook/card_action"
  }
}

Option 2: Use Message Card v2 API

Lark may have a different API for handling card interactions. Need to research:

• https://open.larksuite.com/document/ukTMukTMukTM/uEjNwUjLxYDM14SM2ATN

Option 3: Use Bot Commands Instead

Replace button-based flow with text command flow:

• User sends: "議事録 タスク抽出"
• Bot responds with results directly

Priority

HIGH - Core interactive functionality is broken