feat: scaffold web frontend

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

web/vite.config.ts

@@ -0,0 +1,13 @@
+import path from "node:path";
+import react from "@vitejs/plugin-react";
+import tailwindcss from "@tailwindcss/vite";
+import { defineConfig } from "vite";
+
+export default defineConfig({
+  plugins: [react(), tailwindcss()],
+  resolve: {
+    alias: {
+      "@": path.resolve(__dirname, "./src"),
+    },
+  },
+});