chore: initial project scaffold

Sets up monorepo with Wails desktop shell, Go backend, React/TS frontend, and Kotlin Android SDK skeleton.

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

frontend-react/vite.config.ts

@@ -0,0 +1,19 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+import tailwindcss from '@tailwindcss/vite'
+import path from 'path'
+
+export default defineConfig({
+  plugins: [react(), tailwindcss()],
+  resolve: {
+    alias: { '@': path.resolve(__dirname, './src') },
+  },
+  server: {
+    port: 5173,
+    strictPort: true,
+  },
+  build: {
+    outDir: '../desktop/frontend/dist',
+    emptyOutDir: true,
+  },
+})