feat(n8n): wire notify and persist append logs

skills/n8n-webhook/SKILL.md

@@ -95,16 +95,17 @@ This keeps the external surface small while letting n8n route internally.
 
 ### Import the shipped router workflow
 
-Use the included workflow asset when you want a ready-made starter router for:
+Use the included workflow asset when you want a ready-made local router for:
 
-- `append_log`
-- `notify`
+- `append_log` → append small records into workflow static data (`actionLog`, latest 200)
+- `notify` → send through the current Telegram + Discord notification paths
 - normalized JSON success/failure responses
 - unknown-action handling
 
 Important:
 - the workflow export intentionally leaves Webhook authentication unset
 - after import, manually set **Authentication = Header Auth** on the Webhook node and bind a local credential using `x-openclaw-secret`
+- the shipped asset already includes the live side-effect shape for local JSONL logging plus Telegram/Discord fan-out
 
 See `references/openclaw-action.md` for import and test steps.
 
@@ -115,6 +116,7 @@ See `references/openclaw-action.md` for import and test steps.
 3. If the shipped workflow should support it, update `assets/openclaw-action.workflow.json` and rerun `scripts/validate-workflow.py`.
 4. Keep the first version small and explicit.
 5. Only add the new endpoint to regular use after a successful `/webhook-test/` run.
+6. For append-style event logging, prefer workflow static data for small recent breadcrumbs; use MinIO later for rotation, batching, archival, or sharing rather than tiny object-per-line writes.
 
 ## Environment variables