deps: add shadcn-vue components, lucide icons, ATM config and composable

- Card, Badge, Separator, Button, Skeleton from shadcn-vue
- lucide-vue-next for icons
- config/atms.ts: typed ATM machine registry (single source of truth)
- composables/useNostrAtmStatus.ts: Nostr WebSocket logic extracted

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package.json

@@ -10,9 +10,11 @@
   },
   "dependencies": {
     "@tailwindcss/vite": "^4.2.2",
+    "@vueuse/core": "^14.2.1",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "lucide-vue-next": "^1.0.0",
+    "reka-ui": "^2.9.3",
     "tailwind-merge": "^3.5.0",
     "tailwindcss": "^4.2.2",
     "vue": "^3.5.30"