zoom_app/appconnect/marketplace-assets/oauth-zoom-callback.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <title>Zoom sign-in complete</title>
  <style>
    body {
      font-family: system-ui, -apple-system, sans-serif;
      max-width: 32rem;
      margin: 4rem auto;
      padding: 0 1.25rem;
      color: #1a1a1a;
      line-height: 1.5;
    }
  </style>
</head>
<body>
  <h1>Sign-in complete</h1>
  <p>
    You can return to <strong>Companion AI for Zoom</strong>. If the Mac app did not close the sign-in window,
    close this tab and continue in the app.
  </p>
  <script>
    // Optional fallback when OAuth runs outside the in-app web view:
    // forward code/state to the local listener used for legacy loopback flows.
    (function () {
      try {
        var q = window.location.search || "";
        if (!q) return;
        var loopback = "http://127.0.0.1:8742/oauth2redirect" + q;
        // Prefer staying on HTTPS for the in-app WKWebView intercept path.
        // Uncomment to also attempt loopback handoff for external browsers:
        // window.location.replace(loopback);
      } catch (e) {}
    })();
  </script>
</body>
</html>