feat(apps): MagicMirror as a Void app (#/mirror, mirror.hynesy.com)

Embed MagicMirror² (CT 111) via the shared embedView factory, exposed at
mirror.hynesy.com through Traefik + CF Access. Traefik mirror-frame middleware
swaps MM's X-Frame-Options for a CSP frame-ancestors allowing the Void origins.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "void-server",
-  "version": "2.2.0",
+  "version": "2.3.0",
   "type": "module",
   "private": true,
   "scripts": {