feat: spike - replace Electron with Tauri v2 desktop app shell (#44)

Establishes Tauri v2 project structure as a proof-of-concept replacement for
Electron. Binary size target: under 20MB vs ~300MB. Server runs independently
via Docker/Tailscale; Tauri is a thin webview wrapper only.

Phase 1-5 implementation:
- Add src-tauri/ with Cargo.toml, main.rs, lib.rs, build.rs, tauri.conf.json
- Register plugins: dialog, notification, autostart, deep-link, updater, shell, os
- System tray with click-to-focus and health score tooltip support
- Remove vite-plugin-electron and all Electron conditional build logic
- Add @tauri-apps/api + 8 plugin packages; remove electron/electron-builder
- Create isDesktopApp() utility using isTauri() from @tauri-apps/api/core
- Create tauri-dialog.ts (native file picker + web fallback)
- Create tauri-notification.ts (OS notifications + browser fallback)
- Create tray-manager.ts (health score tray tooltip)
- Update auth.ts: initServerUrl reads VITE_SERVER_URL env var (no Electron IPC)
- Update use-os-detection.ts: uses browser userAgentData only
- Delete src/main.ts (1654 lines), preload.ts, auto-updater.ts, prepare-server.mjs

To run: install Rust + Tauri CLI, then `npm run dev:tauri`

Co-authored-by: Claude Agent <agent@protolabsai.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: 3 people

apps/ui/package.json

@@ -13,38 +13,32 @@
   "engines": {
     "node": ">=22.0.0 <23.0.0"
   },
-  "main": "dist-electron/main.js",
   "scripts": {
     "dev": "vite --clearScreen false",
-    "dev:web": "cross-env VITE_SKIP_ELECTRON=true vite --clearScreen false",
-    "dev:electron": "vite --clearScreen false",
-    "dev:electron:debug": "cross-env OPEN_DEVTOOLS=true vite --clearScreen false",
+    "dev:web": "vite --clearScreen false",
+    "dev:tauri": "tauri dev",
     "build": "vite build",
-    "build:electron": "node scripts/prepare-server.mjs && vite build && electron-builder",
-    "build:electron:legless": "vite build && electron-builder --config electron-builder.legless.json",
-    "build:electron:legless:dir": "vite build && electron-builder --config electron-builder.legless.json --dir",
-    "build:electron:dir": "node scripts/prepare-server.mjs && vite build && electron-builder --dir",
-    "build:electron:win": "node scripts/prepare-server.mjs && vite build && electron-builder --win",
-    "build:electron:win:dir": "node scripts/prepare-server.mjs && vite build && electron-builder --win --dir",
-    "build:electron:mac": "node scripts/prepare-server.mjs && vite build && electron-builder --mac",
-    "build:electron:mac:dir": "node scripts/prepare-server.mjs && vite build && electron-builder --mac --dir",
-    "build:electron:linux": "node scripts/prepare-server.mjs && vite build && electron-builder --linux",
-    "build:electron:linux:dir": "node scripts/prepare-server.mjs && vite build && electron-builder --linux --dir",
-    "postinstall": "electron-builder install-app-deps",
+    "build:tauri": "tauri build",
+    "tauri": "tauri",
     "preview": "vite preview",
     "lint": "npx eslint",
     "typecheck": "node scripts/generate-routes.mjs && tsc --noEmit",
     "pretest": "node scripts/kill-test-servers.mjs && node scripts/setup-e2e-fixtures.mjs",
     "test": "playwright test",
     "test:headed": "playwright test --headed",
-    "test:electron": "playwright test --config playwright.electron.config.ts",
     "test:smoke": "playwright test --config playwright.smoke.config.ts",
-    "dev:electron:wsl": "cross-env vite",
-    "dev:electron:wsl:gpu": "cross-env MESA_D3D12_DEFAULT_ADAPTER_NAME=NVIDIA vite",
     "storybook": "storybook dev -p 6006",
     "build-storybook": "storybook build"
   },
   "dependencies": {
+    "@tauri-apps/api": "^2",
+    "@tauri-apps/plugin-autostart": "^2",
+    "@tauri-apps/plugin-deep-link": "^2",
+    "@tauri-apps/plugin-dialog": "^2",
+    "@tauri-apps/plugin-notification": "^2",
+    "@tauri-apps/plugin-os": "^2",
+    "@tauri-apps/plugin-shell": "^2",
+    "@tauri-apps/plugin-updater": "^2",
     "@ai-sdk/anthropic": "^3.0.45",
     "@ai-sdk/react": "^3.0.92",
     "@codemirror/lang-css": "^6.3.1",
@@ -125,7 +119,6 @@
     "cmdk": "1.1.1",
     "dagre": "0.8.5",
     "dotenv": "17.2.3",
-    "electron-updater": "^6.8.3",
     "geist": "1.5.1",
     "lucide-react": "0.562.0",
     "motion": "^12.34.0",
@@ -159,7 +152,6 @@
   },
   "devDependencies": {
     "@chromatic-com/storybook": "^5.0.1",
-    "@electron/rebuild": "^4.0.3",
     "@eslint/js": "9.0.0",
     "@playwright/test": "1.57.0",
     "@protolabsai/ui": "^0.60.0",
@@ -177,144 +169,15 @@
     "@typescript-eslint/parser": "8.50.0",
     "@vitejs/plugin-react": "5.1.2",
     "cross-env": "10.1.0",
-    "electron": "39.2.7",
-    "electron-builder": "^26.7.0",
     "eslint": "9.39.2",
     "eslint-plugin-storybook": "^10.2.8",
     "sharp": "^0.34.5",
     "storybook": "^10.2.8",
     "tailwindcss": "4.1.18",
     "tw-animate-css": "1.4.0",
     "typescript": "5.9.3",
+    "@tauri-apps/cli": "^2",
     "vite": "7.3.0",
-    "vite-plugin-electron": "0.29.0",
-    "vite-plugin-electron-renderer": "0.14.6",
     "vite-plugin-pwa": "^1.2.0"
-  },
-  "build": {
-    "appId": "studio.protolabs.app",
-    "productName": "protoLabs.studio",
-    "artifactName": "${productName}-${version}-${arch}.${ext}",
-    "npmRebuild": false,
-    "publish": {
-      "provider": "github",
-      "owner": "protoLabsAI",
-      "repo": "automaker"
-    },
-    "afterPack": "./scripts/rebuild-server-natives.cjs",
-    "directories": {
-      "output": "release"
-    },
-    "files": [
-      "dist/**/*",
-      "dist-electron/**/*",
-      "public/**/*",
-      "!node_modules/**/*"
-    ],
-    "extraResources": [
-      {
-        "from": "server-bundle/dist",
-        "to": "server"
-      },
-      {
-        "from": "server-bundle/node_modules",
-        "to": "server/node_modules"
-      },
-      {
-        "from": "server-bundle/package.json",
-        "to": "server/package.json"
-      },
-      {
-        "from": "../../.env",
-        "to": ".env",
-        "filter": [
-          "**/*"
-        ]
-      }
-    ],
-    "mac": {
-      "category": "public.app-category.developer-tools",
-      "entitlements": "entitlements.mac.plist",
-      "entitlementsInherit": "entitlements.mac.plist",
-      "extendInfo": {
-        "NSMicrophoneUsageDescription": "protoLabs Studio needs microphone access for voice activation and wake word detection."
-      },
-      "target": [
-        {
-          "target": "dmg",
-          "arch": [
-            "x64",
-            "arm64"
-          ]
-        },
-        {
-          "target": "zip",
-          "arch": [
-            "x64",
-            "arm64"
-          ]
-        }
-      ],
-      "icon": "public/icon.icns"
-    },
-    "win": {
-      "target": [
-        {
-          "target": "nsis",
-          "arch": [
-            "x64"
-          ]
-        }
-      ],
-      "icon": "public/icon.ico"
-    },
-    "linux": {
-      "target": [
-        {
-          "target": "AppImage",
-          "arch": [
-            "x64"
-          ]
-        },
-        {
-          "target": "deb",
-          "arch": [
-            "x64"
-          ]
-        },
-        {
-          "target": "rpm",
-          "arch": [
-            "x64"
-          ]
-        }
-      ],
-      "category": "Development",
-      "icon": "public/logo_larger.png",
-      "maintainer": "hello@protolabs.studio",
-      "executableName": "automaker",
-      "description": "An autonomous AI development studio that helps you build software faster using AI-powered agents",
-      "synopsis": "AI-powered autonomous development studio"
-    },
-    "rpm": {
-      "depends": [
-        "gtk3",
-        "libnotify",
-        "nss",
-        "libXScrnSaver",
-        "libXtst",
-        "xdg-utils",
-        "at-spi2-core",
-        "libuuid"
-      ],
-      "compression": "xz",
-      "vendor": "AutoMaker Team"
-    },
-    "nsis": {
-      "oneClick": false,
-      "allowToChangeInstallationDirectory": true,
-      "createDesktopShortcut": true,
-      "createStartMenuShortcut": true
-    }
   }
 }