Bug Report

Channel: Feishu (飞书)

Description:
When a user sends an image message via Feishu DM, the agent responds twice. This happens because the Feishu plugin fires two separate events for a single image message:

1. First event: the message text / image_key notification
2. Second event: the media attachment download notification

Both events trigger a full agent turn, resulting in duplicate responses and unnecessary token consumption.

Steps to Reproduce:

1. Configure Feishu channel with a working bot
2. Send an image (photo) in a DM to the bot
3. Observe two separate responses from the agent

Expected Behavior:
Only one agent response per user message, regardless of whether the message contains media attachments.

Suggested Fix:
Deduplicate events by message ID before dispatching to the agent. If an event with the same message_id has already triggered an agent turn, skip the second event.

Impact:

• Doubled token usage for every image message
• Confusing UX (two different responses to the same message)
• Reported by user on 2026-02-27

Environment:

• OpenClaw version: 2026.2.15
• Channel: feishu
• Message type: image