feat(n8n): add get-logs action

skills/n8n-webhook/SKILL.md

@@ -51,6 +51,7 @@ Call the preferred action-bus route:
 
 ```bash
 scripts/call-action.sh append_log --args '{"text":"backup complete"}' --request-id auto
+scripts/call-action.sh get_logs --args '{"limit":5}' --pretty
 ```
 
 Call a test webhook while editing a flow:
@@ -98,6 +99,7 @@ This keeps the external surface small while letting n8n route internally.
 Use the included workflow asset when you want a ready-made local router for:
 
 - `append_log` → append small records into workflow static data (`actionLog`, latest 200)
+- `get_logs` → read the most recent retained records from `actionLog`
 - `notify` → send through the current Telegram + Discord notification paths
 - normalized JSON success/failure responses
 - unknown-action handling