web/lib/supabase/client.ts

import { createBrowserClient } from "@supabase/ssr";

export function createClient() {
  return createBrowserClient(
    process.env.NEXT_PUBLIC_SUPABASE_URL!,
    process.env.NEXT_PUBLIC_SUPABASE_PUBLISHABLE_KEY!,
    {
      auth: {
        autoRefreshToken: true,
        persistSession: true,
        // 7 day session — Supabase default is 3600s (1 hour)
        // This must also be set in Supabase Dashboard → Auth → Settings → JWT Expiry
        // Set to 604800 (7 days) in the dashboard
      },
    }
  );
}