fix: polyfill WebSocket for Supabase client on Node.js 20 and add Hugging Face metadata

server/.gitignore

@@ -0,0 +1,5 @@
+node_modules/
+.env
+*.db
+*.sqlite
+*.sqlite3

server/README.md

@@ -0,0 +1,11 @@
+---
+title: winx_prinx-api
+emoji: 📊
+colorFrom: purple
+colorTo: indigo
+sdk: docker
+pinned: false
+---
+
+# winx_prinx Stream Analytics API Backend
+Exposed via Hugging Face Spaces.

server/db.js

@@ -3,6 +3,10 @@ import Database from 'better-sqlite3';
 import dotenv from 'dotenv';
 import path from 'path';
 import fs from 'fs';
+import WebSocket from 'ws';
+
+// Polyfill WebSocket for Supabase Realtime in Node.js < 22
+globalThis.WebSocket = WebSocket;
 
 dotenv.config();