Remove hardcode of email restriction.

build.sh

@@ -5,12 +5,9 @@
 # Set these in Cloudflare Pages > Settings > Environment Variables:
 #   API_BASE_URL       - Backend API URL (e.g. https://api.yourdomain.com)
 #   GOOGLE_CLIENT_ID   - Google OAuth Client ID
-#   ALLOWED_EMAILS     - Comma-separated email whitelist (e.g. alice@gmail.com,bob@gmail.com)
 
 API_BASE_URL="${API_BASE_URL:-https://xxx.xxx.com}"
 GOOGLE_CLIENT_ID="${GOOGLE_CLIENT_ID:-xxxxxxxxxxxxxxxxxxxxxxxxxx.apps.googleusercontent.com}"
-ALLOWED_EMAILS="${ALLOWED_EMAILS:-your-email@gmail.com}"
-
 cat > frontend/auth-config.js << JSEOF
 window.API_CONFIG = { baseUrl: '${API_BASE_URL}' };
 
@@ -25,7 +22,6 @@ const AUTH_CONFIG = {
 };
 
 window.AUTH_CONFIG = AUTH_CONFIG;
-window.ALLOWED_EMAILS = '${ALLOWED_EMAILS}'.split(',').map(e => e.trim());
 JSEOF
 
 echo "Generated auth-config.js with API_BASE_URL=${API_BASE_URL}"