feat: US-001 — scaffold NeuralDesk Electron + React app

- electron-forge 7 + Vite plugin (vite-typescript template)
- React 19 + TypeScript 5 strict mode
- TanStack Router with file-based routing (4 routes: /, /timeline, /tasks, /projects)
- Tailwind CSS 3 + PostCSS with Figma design tokens (sidebar, primary, muted)
- Framer Motion, Lucide React, shadcn/ui utilities (cn, CVA, clsx, twMerge)
- AppShell layout: 240px sidebar with collapse toggle, active route highlighting
- Vite configs use .mts extension to avoid ESM/CJS conflict with electron-forge
- Full package build verified (linux x64)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -0,0 +1,55 @@
+{
+  "name": "neuraldesk",
+  "productName": "NeuralDesk",
+  "version": "0.1.0",
+  "description": "Local-first intelligent desktop workspace",
+  "main": ".vite/build/main.js",
+  "private": true,
+  "scripts": {
+    "start": "electron-forge start",
+    "package": "electron-forge package",
+    "make": "electron-forge make",
+    "publish": "electron-forge publish",
+    "lint": "eslint --ext .ts,.tsx ."
+  },
+  "keywords": [],
+  "author": "rmusso",
+  "license": "MIT",
+  "devDependencies": {
+    "@electron-forge/cli": "^7.11.1",
+    "@electron-forge/maker-deb": "^7.11.1",
+    "@electron-forge/maker-rpm": "^7.11.1",
+    "@electron-forge/maker-squirrel": "^7.11.1",
+    "@electron-forge/maker-zip": "^7.11.1",
+    "@electron-forge/plugin-auto-unpack-natives": "^7.11.1",
+    "@electron-forge/plugin-fuses": "^7.11.1",
+    "@electron-forge/plugin-vite": "^7.11.1",
+    "@electron/fuses": "^1.8.0",
+    "@tanstack/router-vite-plugin": "^1.161.1",
+    "@types/electron-squirrel-startup": "^1.0.2",
+    "@types/react": "^19.2.14",
+    "@types/react-dom": "^19.2.3",
+    "@typescript-eslint/eslint-plugin": "^5.62.0",
+    "@typescript-eslint/parser": "^5.62.0",
+    "@vitejs/plugin-react": "^5.1.4",
+    "autoprefixer": "^10.4.24",
+    "electron": "40.6.0",
+    "eslint": "^8.57.1",
+    "eslint-plugin-import": "^2.32.0",
+    "postcss": "^8.5.6",
+    "tailwindcss": "^3.4.19",
+    "typescript": "^5.9.3",
+    "vite": "^5.4.21"
+  },
+  "dependencies": {
+    "@tanstack/react-router": "^1.161.1",
+    "class-variance-authority": "^0.7.1",
+    "clsx": "^2.1.1",
+    "electron-squirrel-startup": "^1.0.1",
+    "framer-motion": "^12.34.2",
+    "lucide-react": "^0.575.0",
+    "react": "^19.2.4",
+    "react-dom": "^19.2.4",
+    "tailwind-merge": "^3.5.0"
+  }
+}