openclaw - 💡(How to fix) Fix Feishu card renderMode shows unwanted `main` header/title and there is no config to disable it [1 comments, 2 participants]

Describe the bug

When using the built-in Feishu channel with channels.feishu.renderMode = "card", the rendered Feishu card shows an unwanted main label/header at the top of the card.

I want to keep card rendering because the visual style is closer to the official Feishu plugin, but I do not want this extra main title/header to appear.

From reading the OpenClaw Feishu card generation logic, it looks like the card header is rendered when a presentation title exists, but there does not seem to be a config option to disable the title/header while still keeping card mode.

To Reproduce

1. Upgrade OpenClaw to 2026.4.23
2. Enable built-in Feishu channel
3. Set:

   "channels": {
     "feishu": {
       "renderMode": "card",
       "streaming": true
     }
   }

4. Send a message through Feishu
5. Observe that the rendered Feishu card shows main at the top

Expected behavior

One of the following would be preferred:

• No extra main header/title is shown in Feishu card mode
• Add a config option to disable the card header/title
• Keep card styling while rendering only the body markdown content

Actual behavior

Feishu card mode renders an unwanted top title/header (main), and there is no obvious config option to remove it.

Environment

• OpenClaw version: 2026.4.23
• Channel: built-in Feishu
• Config:

  "channels": {
    "feishu": {
      "renderMode": "card",
      "streaming": true
    }
  }

Additional context

I switched Feishu output to card mode because I wanted a more compact visual style, closer to the official Feishu plugin output. However, the extra main header makes the result look odd.

It would be helpful if Feishu card rendering supported:

• headerless cards, or
• a config like showHeader: false / hideTitle: true