feat: Umami/ntfy 可观测性栈与 WordPress AdSense 部署

deploy/observability/README.md

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+# Nomadro observability (Umami analytics + ntfy notifications)
+
+## DNS
+
+- `umami.nomadro.com` → server
+- `ntfy.nomadro.com` → server
+
+## URLs
+
+- Analytics: https://umami.nomadro.com  
+- Notifications: https://ntfy.nomadro.com  
+
+## Credentials (server only)
+
+```bash
+cat /etc/nomadro/umami.env      # admin login
+cat /etc/nomadro/ntfy.env       # publish token + topic
+cat /etc/nomadro/umami-sites.env
+```
+
+## Tracked sites
+
+| Domain | Surface |
+| --- | --- |
+| nomadro.com | WordPress + Next (zh) |
+| portal.nomadro.com | registered in Umami |
+| dylive.nomadro.com | DouyinWEB |
+| nomadro.live | TikTok Promo |
+| wx.nomadro.com | HackRobot |
+| x.nomadro.com | XAuto |
+
+## Notifications
+
+```bash
+notify-ntfy "Title" "message" high "rotating_light" server-alerts
+```
+
+Health checks run every 5 minutes via `/etc/cron.d/nomadro-health` and push to topic `server-alerts`.
+
+## Redeploy
+
+```bash
+python deploy/observability/finish_deploy.py
+```