fix(ai): 修復 analyze_and_propose 方法呼叫錯誤

- OpenClawService 沒有 analyze(), 正確方法是 analyze_alert(alert_context)
- 包裝 host_statuses 為 alert_ctx 傳入
- 解包返回值 (8-tuple) 用 *_ 忽略尾端

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

apps/api/src/api/v1/ai.py

@@ -174,7 +174,17 @@ async def analyze_and_propose(
     # Step 2: 呼叫 OpenClaw AI
     try:
         openclaw = get_openclaw()
-        decision, provider, raw_response = await openclaw.analyze(host_statuses)
+        # 2026-04-01 Claude Code: 修復方法呼叫 analyze → analyze_alert
+        # OpenClawService 只有 analyze_alert(alert_context), 無 analyze(host_statuses)
+        alert_ctx = {
+            "alert_type": "host_status_check",
+            "severity": "medium",
+            "target_resource": "awoooi-api",
+            "namespace": "awoooi-prod",
+            "host_statuses": host_statuses,
+        }
+        analysis_result, provider, raw_response, *_ = await openclaw.analyze_alert(alert_ctx)
+        decision = analysis_result
 
         logger.info(
             "ai_analysis_complete",