feat: add Vintage Radio template (93rd app template)

Beautiful retro radio UI with real internet station streams.
Static nginx site with station cards and analog dial animation.

dashcaddy-api/src/docker/app-templates.js

@@ -1764,6 +1764,42 @@ const APP_TEMPLATES = {
     ]
   },
 
+  "vintage-radio": {
+    name: "Vintage Radio",
+    description: "Tune a beautiful retro radio through real internet stations (SomaFM, KEXP, BBC, Radio Paradise, and more)",
+    icon: "📻",
+    logo: "/assets/vintage-radio.png",
+    category: "Media",
+    popularity: 72,
+    difficulty: "Easy",
+    docker: {
+      image: "nginx:alpine",
+      ports: ["{{PORT}}:80"],
+      volumes: [
+        "/opt/vintage-radio/web:/usr/share/nginx/html:ro"
+      ],
+      environment: {}
+    },
+    subdomain: "radio",
+    defaultPort: 8090,
+    healthCheck: "/",
+    subpathSupport: 'none',
+    staticSite: true,
+    features: [
+      "Vintage wooden-cabinet radio UI with analog dial",
+      "Curated list of real public internet-radio streams",
+      "Smooth tuner animation with frequency scanning",
+      "Live VU meter and station-name display",
+      "Add your own streams by editing stations.json"
+    ],
+    setupInstructions: [
+      "Open radio.sami (or your configured subdomain)",
+      "Drag the dial or click a station card to tune in",
+      "To add stations, edit /opt/vintage-radio/web/stations.json on the host and restart the container"
+    ],
+    tags: ["radio", "music", "streaming", "audio", "vintage", "retro", "media"]
+  },
+
   "airsonic": {
     name: "Airsonic Advanced",
     description: "Free web-based media streamer",