fix: listen on all interfaces for LAN testing

README.md

@@ -9,6 +9,6 @@ npm ci
 npm run dev
 ```
 
-Then open <http://127.0.0.1:4173/> in Chromium.
+The server listens on `0.0.0.0:4173` by default. Open `http://127.0.0.1:4173/` locally, or `http://<主机局域网IP>:4173/` from another device.
 
 The public checkout intentionally excludes private research inputs and local acceptance artifacts; those are kept in the developer workspace and are covered by `.gitignore`.

scripts/serve.mjs

@@ -1,9 +1,10 @@
 import { createReadStream } from "node:fs";
 import { stat } from "node:fs/promises";
 import { createServer } from "node:http";
-import { extname, join, normalize, relative, resolve } from "node:path";
+import { extname, join, relative, resolve } from "node:path";
 
 const root = resolve("dist");
+const host = process.env.HOST ?? "0.0.0.0";
 const port = Number(process.env.PORT ?? 4173);
 const contentTypes = {
   ".html": "text/html; charset=utf-8",
@@ -31,6 +32,6 @@ const server = createServer(async (request, response) => {
   }
 });
 
-server.listen(port, "127.0.0.1", () => {
-  console.log(`JPW7 M0 server listening on http://127.0.0.1:${port}`);
+server.listen(port, host, () => {
+  console.log(`JPW7 M0 server listening on http://${host}:${port}`);
 });