homepage(tile): add Voice Design Studio (irv-ml1:8216) to Apps group

Operator-facing voice mint/audition/keeper-mark front-end (tts-dev), sited next
to The Booth in Apps — LAN/WG-internal, no auth. siteMonitor on /health verified
reachable from the homepage host (esh-docker-vm). Deployed via rsync.

configs/homepage/services.yaml

@@ -25,6 +25,11 @@
       icon: mdi-filmstrip
       siteMonitor: http://10.100.10.50:8090/healthz
       description: Ephemeral media drop + upload-for-pickup (human-readable ids) — nh3-dev, 24h TTL
+  - Voice Design Studio:
+      href: http://10.100.79.3:8216/
+      icon: mdi-microphone
+      siteMonitor: http://10.100.79.3:8216/health
+      description: Mint, audition and keeper-mark synthetic fleet voices — irv-ml1, CPU-only
 
 # The AI tab is fully Docker-auto-discovered. Each inference service carries
 # a homepage.group=AI - <role> label on its compose file (AI - Inference,