Build frontend locally for lightweight deployment

scripts/build-local.mjs

@@ -0,0 +1,32 @@
+import { cpSync, existsSync, mkdirSync, rmSync } from "node:fs";
+import { spawnSync } from "node:child_process";
+import { join } from "node:path";
+
+const root = process.cwd();
+const distDir = join(root, "dist");
+const clientDir = join(distDir, "client");
+const outputDir = join(root, "out");
+const vinextBin = join(root, "node_modules", ".bin", process.platform === "win32" ? "vinext.cmd" : "vinext");
+
+rmSync(distDir, { recursive: true, force: true });
+rmSync(outputDir, { recursive: true, force: true });
+
+const result = spawnSync(vinextBin, ["build"], {
+  cwd: root,
+  stdio: "inherit",
+  shell: process.platform === "win32",
+});
+
+const builtIndex = join(clientDir, "index.html");
+if (!existsSync(builtIndex)) {
+  console.error("\n本地构建失败：没有生成 dist/client/index.html。\n");
+  process.exit(result.status || 1);
+}
+
+mkdirSync(outputDir, { recursive: true });
+cpSync(clientDir, outputDir, { recursive: true });
+console.log("\n部署成品已生成：out/\n");
+
+// vinext 1.0 beta can hit a Windows libuv assertion after a successful export.
+// The fresh artifact check above is the source of truth for this browser-only site.
+process.exit(0);