fix(auto-repair): 中低風險+無kubectl_command → TYPE-1 純資訊，不顯示審核按鈕

問題: HostHighCpuLoad 等主機層告警 affected_services=[] → OpenClaw 生成
kubectl unknown → safety guard 攔截 → 退回 READY + TYPE-3 帶按鈕卡片
用戶一直看到帶按鈕的中/低風險告警，按鈕無法修復任何東西

修復三處:
1. openclaw.py: _call_openclaw_analyze() 回傳 suggested_action 欄位
   + target_resource 預設改為 "" (避免 "unknown" 進入 safety guard)
2. decision_manager.py: classify_notification() 傳入
   suggested_action / risk_level / has_kubectl_command
3. telegram_gateway.py: classify_notification() 新規則 —
   無 kubectl_command + risk=low/medium + action=investigate/no_action
   → TYPE-1 (純資訊，無按鈕)

搭配 clawbot-v5 f4b84d7 (OpenClaw prompt CRITICAL RULES) 一起生效

2026-04-14 Claude Sonnet 4.6 Asia/Taipei

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/api/src/services/openclaw.py

@@ -367,7 +367,8 @@ class OpenClawService:
                 "action": data.get("action_title", "AI 分析"),
                 "description": data.get("description", ""),
                 "kubectl_command": data.get("kubectl_command") or "",
-                "target_resource": data.get("target_resource", "unknown"),
+                "suggested_action": data.get("suggested_action", ""),
+                "target_resource": data.get("target_resource") or "",
                 "namespace": data.get("namespace", "awoooi-prod"),
                 "risk_level": data.get("risk_level", "medium"),
                 "reasoning": data.get("reasoning", ""),