根因: AI Router DIAGNOSE→openclaw_nemo 回傳 ClawBot 格式:
{"action_title":"...","risk_level":"...","confidence":0.85}
Diagnostician 只解析 {"hypotheses":[...]} → 永遠 0 hypotheses → ABSTAIN
修復: _extract_hypotheses() 新增 openclaw_nemo 格式檢測與轉換
action_title→description, confidence→confidence, risk_level→category
影響: 所有 critical alert 自 2026-04-15 收到後一律 ABSTAIN,無任何修復動作
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>