Problem

Feishu may redeliver the same message multiple times, especially during:

• WebSocket reconnects
• OpenClaw restarts
• Network instability

In one-on-one chat mode, this causes duplicate replies to the same message.

Solution

Implement persistent message deduplication:

• New file: dedup-store.ts - Filesystem-based message dedup storage
• Extended TTL: 30min → 24h for better reliability across restarts
• Dual-layer: Memory cache (fast path) + Disk storage (persistent)
• Auto-cleanup: Probabilistic cleanup + size limiting (10k entries/account)

Changes

• extensions/feishu/src/dedup.ts: Add async dedup with persistence
• extensions/feishu/src/dedup-store.ts: New persistent store implementation
• extensions/feishu/src/bot.ts: Use new async dedup function

Testing

• Restart OpenClaw and verify no duplicate processing
• Simulate WebSocket reconnect
• Verify memory + disk cache consistency

Fixes duplicate message processing in Feishu DM conversations.

Related

• PR: feat(feishu): persistent message deduplication to prevent duplicate replies #22604