feat: scaffold Tauri v2 + React + TypeScript + shadcn/ui project

Set up Vite + React 19 + TypeScript, Tauri v2, Tailwind v4,
shadcn/ui (dark theme), and all core frontend dependencies
(Zustand, TanStack Query/Table/Virtual, CodeMirror, lucide-react).

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

vite.config.ts

@@ -0,0 +1,31 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
+import tailwindcss from "@tailwindcss/vite";
+import path from "path";
+
+const host = process.env.TAURI_DEV_HOST;
+
+export default defineConfig({
+  plugins: [react(), tailwindcss()],
+  resolve: {
+    alias: {
+      "@": path.resolve(__dirname, "./src"),
+    },
+  },
+  clearScreen: false,
+  server: {
+    port: 5173,
+    strictPort: true,
+    host: host || false,
+    hmr: host
+      ? {
+          protocol: "ws",
+          host,
+          port: 1421,
+        }
+      : undefined,
+    watch: {
+      ignored: ["**/src-tauri/**"],
+    },
+  },
+});