Multi-model automatic fallback system

Automatically monitors model health and switches between primary and fallback models to maintain stability and recover when possible.

Feishu message fallback mechanism with retry logic. Automatically retries failed messages with exponential backoff and fallback from rich text to plain text.

智能模型自动切换。根据消息复杂度和文件类型自动选择最优模型（Flash/Main/Coding/Vision/Complex），提升响应质量和效率。Trigger on "模型切换", "智能模型", "自动选择模型", "model switch"。

Diagnose and fix model routing conflicts. Ensure primary model uses correct provider endpoint without duplicate overrides.

備份系統關鍵設定與工作區資料。當用戶要求「備份系統」、「backup system」或需要手動保存當前狀態時使用。

Your agent always comes back. Anchor identity and memory on-chain so any new instance can resurrect from just an address — no local state, no single point of...