Fix Twitch OAuth redirect URI and update setup instructions

php/config.php

@@ -0,0 +1,24 @@
+<?php
+// php/config.php
+
+// Database credentials
+define('DB_HOST', 'localhost');
+define('DB_USER', 'multichat_user'); // Replace with your MySQL username
+define('DB_PASS', '!Bdsbkh2!'); // Replace with your MySQL password
+define('DB_NAME', 'multichat_overlay');
+
+// Twitch API credentials
+define('TWITCH_CLIENT_ID', 'hf00cu69zzjxbmtmjipzebrmsexuxt'); // Replace with your Twitch Client ID
+define('TWITCH_CLIENT_SECRET', '9iqweehbkx113hqmrhigk3rsaoiyqa'); // Replace with your Twitch Client Secret
+define('TWITCH_REDIRECT_URI', 'http://localhost/auth.php'); // Replace with your redirect URI
+
+// Session secret for secure cookies
+define('SESSION_SECRET', 'o2LuCTQHN1JMlR0HeciJTNTx9OMFg5zXBiEpes26ouo='); // IMPORTANT: Change this to a strong, random string
+
+// WebSocket server address
+define('WEBSOCKET_HOST', 'localhost');
+define('WEBSOCKET_PORT', 8080);
+
+// Base URL for the application
+define('BASE_URL', 'http://localhost'); // Replace with your application's base URL
+?>