feat : save map.json on project

vite.config.ts

@@ -1,10 +1,37 @@
 import { defineConfig } from "vite";
 import react from "@vitejs/plugin-react";
 import path from "node:path";
+import fs from "node:fs";
+import type { ViteDevServer } from "vite";
+
+const saveMapPlugin = () => ({
+  name: "save-map-api",
+  configureServer(server: ViteDevServer) {
+    server.middlewares.use("/api/save-map", async (req: any, res: any) => {
+      if (req.method !== "POST") {
+        res.writeHead(405).end();
+        return;
+      }
+      
+      let body = "";
+      req.on("data", (chunk: any) => (body += chunk));
+      req.on("end", () => {
+        try {
+          const mapPath = path.resolve(__dirname, "public/map.json");
+          fs.writeFileSync(mapPath, body);
+          res.writeHead(200, { "Content-Type": "application/json" });
+          res.end(JSON.stringify({ success: true }));
+        } catch (err: any) {
+          res.writeHead(500).end(JSON.stringify({ error: err.message }));
+        }
+      });
+    });
+  },
+});
 
 // https://vite.dev/config/
 export default defineConfig({
-  plugins: [react()],
+  plugins: [react(), saveMapPlugin()],
   resolve: {
     alias: {
       "@": path.resolve(__dirname, "./src"),