feat: scaffold TaskTracker.Web with Vite, React, TypeScript, Tailwind

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

TaskTracker.Web/vite.config.ts

@@ -0,0 +1,16 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+import tailwindcss from '@tailwindcss/vite'
+
+export default defineConfig({
+  plugins: [react(), tailwindcss()],
+  server: {
+    port: 5173,
+    proxy: {
+      '/api': {
+        target: 'http://localhost:5200',
+        changeOrigin: true,
+      },
+    },
+  },
+})