Add Tauri launcher with Svelte UI

- Accounts: panel login/sign-up, Microsoft device-code sign-in, offline
  play; tokens encrypted with a key kept in the OS credential store
- Home: instance rail, live server status, news feed, social links,
  Play button with download progress, speed and ETA
- Full settings: accounts, memory/resolution/after-launch behaviour,
  Java and GC presets, Minecraft keybind editor applied to options.txt,
  theme overrides, storage manager, self-update via GitHub releases
- Game console, crash dialog with hints, per-instance overrides
- Live admin branding (colours, fonts, backgrounds, custom CSS)
- Online install tests for vanilla/Fabric/Quilt/Forge/NeoForge (CI)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011ARcGWxLx21FwXJ3yfGriS

launcher/package.json

@@ -0,0 +1,33 @@
+{
+  "name": "scopenet-launcher",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview",
+    "check": "svelte-check --tsconfig ./tsconfig.json",
+    "tauri": "tauri"
+  },
+  "dependencies": {
+    "@fontsource-variable/inter": "^5.3.0",
+    "@fontsource-variable/jetbrains-mono": "^5.3.0",
+    "@fontsource-variable/outfit": "^5.3.0",
+    "@fontsource-variable/plus-jakarta-sans": "^5.3.0",
+    "@fontsource-variable/space-grotesk": "^5.3.0",
+    "@tauri-apps/api": "^2.12.0",
+    "@tauri-apps/plugin-dialog": "^2.8.0",
+    "@tauri-apps/plugin-opener": "^2.6.0"
+  },
+  "devDependencies": {
+    "@lucide/svelte": "^1.48.0",
+    "@sveltejs/vite-plugin-svelte": "^7.3.1",
+    "@tauri-apps/cli": "^2.12.0",
+    "@tsconfig/svelte": "^5.0.8",
+    "svelte": "^5.57.1",
+    "svelte-check": "^4.7.6",
+    "typescript": "~5.9.0",
+    "vite": "^8.3.1"
+  }
+}