Reduce background model deployment overhead

scripts/build.mjs

@@ -0,0 +1,32 @@
+import { spawn } from "node:child_process";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+
+function run(script, args) {
+  const child = spawn(process.execPath, [path.join(root, script), ...args], {
+    cwd: root,
+    stdio: "inherit",
+  });
+
+  return new Promise((resolve, reject) => {
+    child.once("error", reject);
+    child.once("exit", (code, signal) => {
+      if (signal) {
+        reject(new Error(`${script} terminated by ${signal}`));
+        return;
+      }
+      resolve(code ?? 1);
+    });
+  });
+}
+
+const [typecheckStatus, viteStatus] = await Promise.all([
+  run("node_modules/typescript/bin/tsc", ["-b"]),
+  run("node_modules/vite/bin/vite.js", ["build"]),
+]);
+
+if (typecheckStatus !== 0 || viteStatus !== 0) {
+  process.exitCode = 1;
+}