feat(n8n-webhook): bridge approvals to gog executors

skills/n8n-webhook/references/payloads.md

@@ -239,6 +239,29 @@ Request:
 Purpose:
 - approve or reject a pending item
 - moves resolved entries into `approvalHistory`
+- executes notification drafts inline when the resolved item kind is `notification`
+
+### `approval_history_attach_execution`
+
+Request:
+
+```json
+{
+  "action": "approval_history_attach_execution",
+  "args": {
+    "id": "approval-abc123",
+    "execution": {
+      "driver": "gog",
+      "op": "gmail.drafts.create",
+      "status": "draft_created"
+    }
+  }
+}
+```
+
+Purpose:
+- patch a resolved history item with host-side execution metadata after a real executor runs outside n8n
+- intended for bridges such as `gog`-backed Gmail/Calendar execution
 
 ### `fetch_and_normalize_url`