Summary

Messages delivered via Feishu interactive card streaming mode are not searchable in Feishu's built-in conversation search ("搜索会话内容"). The same content delivered as a plain text message (streaming disabled) is searchable.

Steps to Reproduce

1. Enable Feishu streaming card mode (channels.feishu.streaming: true or similar)
2. Send a message to the agent, receive a long reply via streaming card
3. Wait for the reply to complete (card stops updating)
4. Open Feishu conversation search (搜索会话内容)
5. Search for a distinctive keyword that appears in the reply
6. Result: "找不到相关信息" (No results found)

Expected Behavior

All message content should be searchable in Feishu's conversation search, regardless of delivery mode.

Actual Behavior

• Streaming card messages: not searchable ❌
• Plain text messages (streaming off): searchable ✅

Analysis

Feishu interactive cards are created empty and then progressively updated. Feishu's search index likely only indexes the initial card creation content (empty/minimal), not the final updated content. This means all streaming card replies become invisible to search.

Impact

• Users cannot find historical conversations via Feishu search
• Workaround: disable streaming (channels.feishu.streaming: false)
• This is a significant UX regression when streaming is enabled

Environment

• OpenClaw: 2026.4.24
• Channel: Feishu (飞书)
• Streaming mode: interactive card (block streaming)

Evidence

Screenshot showing a message containing "per-call timeoutMs" that is visible in the chat but returns no results when searched:

The message was delivered via streaming card on 2026-04-25. Feishu search returns "找不到相关信息".

Suggested Fix

Consider:

1. After streaming completes, send a final plain-text fallback message (hidden or replacing the card) so Feishu can index it
2. Or document this as a known limitation of Feishu streaming mode
3. Or switch to a streaming approach that Feishu can index (if one exists)