Update Healer Man server

scripts/dungeon-pipeline/serve-environment-preview.mjs

@@ -0,0 +1,11 @@
+import { createServer } from "vite";
+import { fileURLToPath } from "node:url";
+
+// A fixed asset-review server must not watch unrelated native build outputs.
+const root = fileURLToPath(new URL("../../", import.meta.url));
+const server = await createServer({ root, server: { host: "127.0.0.1", port: 4208, strictPort: true, watch: { ignored: ["**/*"] } } });
+await server.listen();
+server.printUrls();
+for (const signal of ["SIGINT", "SIGTERM"]) {
+  process.once(signal, () => { void server.close().then(() => process.exit(0)); });
+}