fix: support forwarded dev server refresh

server/_core/vite.ts

@@ -12,8 +12,8 @@ const SERVER_ROOT = path.dirname(fileURLToPath(import.meta.url));
 export async function setupVite(app: Express, server: Server) {
   const serverOptions = {
     middlewareMode: true,
-    // Disable Vite client-side auto reload/HMR in dev.
-    hmr: false as const,
+    // Reuse the app HTTP server for HMR so SSH forwarding only needs the app port.
+    hmr: { server },
     allowedHosts: true as const,
   };