add hermes skill docs and todo script

SKILL.md

@@ -0,0 +1,16 @@
+# Microsoft To Do
+
+When the user asks to add a reminder, todo, task, or Microsoft To Do item, call the n8n webhook.
+
+The webhook URL is provided by the environment variable `N8N_TODO_WEBHOOK_URL`.
+
+Input JSON format:
+
+```json
+{
+  "title": "续费 OVH",
+  "due": "2026-05-21T15:00:00",
+  "reminder": "2026-05-21T15:00:00"
+}
+```
+Use local Asia/Shanghai time unless the user specifies another timezone.