Add kiosk desktop app

Tauri app for the Pi. Media runs through the native LiveKit SDK because
WebKitGTK has no WebRTC, with frames encoded in Rust and drawn to a canvas
under the annotation overlay.

apps/kiosk-client/package.json

@@ -0,0 +1,41 @@
+{
+  "name": "@pistation/kiosk-client",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite dev",
+    "build": "vite build",
+    "preview": "vite preview",
+    "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
+    "tauri": "tauri",
+    "tauri:dev": "tauri dev",
+    "tauri:build": "tauri build"
+  },
+  "dependencies": {
+    "@excalidraw/excalidraw": "^0.17.6",
+    "@pistation/client-core": "workspace:*",
+    "@pistation/shared-types": "workspace:*",
+    "@pistation/ui": "workspace:*",
+    "@tauri-apps/api": "^2",
+    "@tauri-apps/plugin-opener": "^2",
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1"
+  },
+  "devDependencies": {
+    "@iconify/svelte": "^4.0.2",
+    "@sveltejs/adapter-static": "^3.0.6",
+    "@sveltejs/kit": "^2.9.0",
+    "@sveltejs/vite-plugin-svelte": "^5.0.0",
+    "@tailwindcss/vite": "^4.0.0",
+    "@tauri-apps/cli": "^2",
+    "@types/node": "^22.10.2",
+    "@types/react": "^18.3.12",
+    "@types/react-dom": "^18.3.1",
+    "svelte": "^5.0.0",
+    "svelte-check": "^4.0.0",
+    "tailwindcss": "^4.0.0",
+    "typescript": "~5.6.2",
+    "vite": "^6.0.3"
+  }
+}