Add Uptime Kuma monitoring template

docs/ops/deployment/public-api-incident-playbook.md

@@ -17,7 +17,7 @@ The playbook focuses on abuse, availability loss, and leaked content.
 | 4xx/5xx spikes | Application logs (`storage/logs/laravel.log`), centralized logging | Look for repeated `Join token access denied` / `token_rate_limited` or unexpected 5xx. |
 | Rate-limit triggers | Laravel log lines emitted from `EventPublicController::handleTokenFailure` | Contains IP + truncated token preview. |
 | CDN/WAF alerts | Reverse proxy (if enabled) | Ensure 429/403 anomalies are forwarded to incident channel. |
-| Synthetic monitors | Planned via `SEC-API-03` | Placeholder until monitors exist. |
+| Synthetic monitors | Uptime Kuma (SEC-API-03) | Public uptime + guest API + support API health checks. |
 
 Manual check commands:
 
@@ -26,6 +26,32 @@ php artisan log:tail --lines=200 | grep "Join token"
 php artisan log:tail --lines=200 | grep "gallery"
 ```
 
+## 1.1 Synthetic Monitors (Uptime Kuma)
+
+Primary uptime:
+- `GET /` (base domain) — HTTP 200-399.
+
+Guest API (stable synthetic event tokens required):
+- `GET /api/v1/events/{token}` — expect JSON containing `"slug"` or `"engagement_mode"`.
+- `GET /api/v1/gallery/{token}` — expect JSON containing `"event"` or `"branding"`.
+- `GET /api/v1/gallery/{token}/photos` — expect JSON containing `"data"`.
+- `GET /api/v1/events/{token}/photos` — expect JSON containing `"data"`.
+
+Support API health metrics (read-only token stored in Kuma):
+- `GET /api/v1/support/tenants?per_page=1`
+- `GET /api/v1/support/events?per_page=1`
+- `GET /api/v1/support/photos?per_page=1`
+
+Defaults:
+- Interval: 60s
+- Timeout: 10s
+- Retries before alert: 2
+
+Notes:
+- Do not store bearer tokens in the repo; configure them directly in Kuma.
+- If synthetic tokens rotate, guest monitors will flap. Keep a dedicated synthetic event/token.
+- Import template: `docs/ops/deployment/uptime-kuma-import.template.json` (replace placeholders before import).
+
 ## 2. Severity Classification
 
 | Level | Criteria | Examples |