diff --git a/apps/api/src/services/approval_db.py b/apps/api/src/services/approval_db.py
index 1cdd4442..1e6eef24 100644
--- a/apps/api/src/services/approval_db.py
+++ b/apps/api/src/services/approval_db.py
@@ -691,6 +691,45 @@ class ApprovalDBService:
                 params,
             )
 
+    async def update_action_by_incident_id(self, incident_id: str, new_action: str) -> int:
+        """
+        Agent Orchestrator 分析完成後覆寫 ApprovalRecord.action。
+
+        設計動機 (2026-04-16 ogt + Claude Sonnet 4.6):
+        - Webhook inline LLM 寫入垃圾 action（如 kubectl rollout restart for postgres disk）
+        - Agent 分析正確但只發新 Telegram 卡，未覆寫 ApprovalRecord
+        - 用戶批准 Agent 卡 → 系統查 incident_id → 執行舊 webhook 垃圾 action
+        - 修復：Agent 完成後呼叫此方法，讓用戶批准時執行正確 action
+
+        Args:
+            incident_id: INC-xxx 格式 Incident ID
+            new_action: Agent 決定的 action（空字串 → 不覆寫）
+
+        Returns:
+            int: rowcount（0 表示找不到對應 PENDING approval）
+        """
+        if not new_action:
+            return 0
+        async with get_db_context() as db:
+            from sqlalchemy import text as _text
+            result = await db.execute(
+                _text("""
+                    UPDATE approval_records
+                    SET action = :new_action
+                    WHERE incident_id = :incident_id
+                      AND status = 'PENDING'
+                """),
+                {"incident_id": incident_id, "new_action": new_action},
+            )
+            rowcount = result.rowcount if hasattr(result, "rowcount") else -1
+        logger.info(
+            "approval_action_updated_by_agent",
+            incident_id=incident_id,
+            new_action=new_action[:80],
+            rowcount=rowcount,
+        )
+        return rowcount
+
     # =========================================================================
     # Phase 6.4h: Proposals API 支援方法
     # =========================================================================
diff --git a/apps/api/src/services/decision_manager.py b/apps/api/src/services/decision_manager.py
index 9d2154cc..b127ba18 100644
--- a/apps/api/src/services/decision_manager.py
+++ b/apps/api/src/services/decision_manager.py
@@ -218,6 +218,29 @@ async def _push_decision_to_telegram(
         # 2026-04-16 ogt + Claude Sonnet 4.6: Playbook 匹配名稱穿透到 TG 卡片 (ADR-076)
         _playbook_name = proposal_data.get("playbook_name", "")
 
+        # 2026-04-16 ogt + Claude Sonnet 4.6: 覆寫 Webhook 的垃圾 action
+        # 問題：Webhook inline LLM 建立 ApprovalRecord 時寫入通用 action（如 kubectl rollout restart）
+        #       Agent 分析正確但只發新 Telegram 卡，未覆寫 ApprovalRecord.action
+        #       用戶批准 Agent 卡 → 系統查 incident_id → 執行舊 webhook 垃圾 action
+        # 修復：Agent 確認 action 後立即覆寫 ApprovalRecord（只要有值，空字串不覆寫）
+        _agent_action = action  # action 已由 _package_to_proposal_data + rule engine 確定
+        if not _agent_action and description:
+            # NO_ACTION：用描述摘要讓用戶知道 Agent 的建議是「觀察/調查」
+            _agent_action = f"NO_ACTION - {description[:120]}"
+        if _agent_action:
+            try:
+                from src.services.approval_db import get_approval_service as _get_approval_svc
+                await _get_approval_svc().update_action_by_incident_id(
+                    incident_id=incident.incident_id,
+                    new_action=_agent_action,
+                )
+            except Exception as _update_err:
+                logger.warning(
+                    "approval_action_update_by_agent_failed",
+                    incident_id=incident.incident_id,
+                    error=str(_update_err),
+                )
+
         # 建立 approval_id (使用 incident_id 作為追蹤)
         # 2026-03-27 ogt: 修復 INC-INC-INC- 重複前綴 bug
         approval_id = incident.incident_id  # 已經是 INC-xxx 格式