Sign in with a button on signed-out pages (#169)

ddiff --git a/server/ui/layout.js b/server/ui/layout.js
iindex b0dcef3..b56d826 100644
---- a/server/ui/layout.js
++++ b/server/ui/layout.js
@@@ -114,7 +114,8 @@ ${twinHead}
  ${icon}
  <script src="${ovServe.url('theme-loader.js')}" defer></script>
  <style>${CSS}</style>
--${styles.map((name) => `<link rel="stylesheet" href="${esc(ovServe.url(name))}">`).join('\n')}
++<!-- The shared showcase stylesheet on every page, not only the home: inner pages use its buttons (sc-btn), and without it a sign-in button drew as a bare link (phone sweep, 2026-11-01). It is scoped to its own sc- classes. -->
++${[...new Set(['showcase.css', ...styles])].map((name) => `<link rel="stylesheet" href="${esc(ovServe.url(name))}">`).join('\n')}
  <script src="${ovServe.url('navbar.js')}" defer></script>
  <script src="${ovServe.url('footer.js')}" defer></script>
  </head>
ddiff --git a/server/ui/routes.js b/server/ui/routes.js
iindex 3d10900..085060e 100644
---- a/server/ui/routes.js
++++ b/server/ui/routes.js
@@@ -77,7 +77,7 @@ function createUiRouter({ rt, auth, limits = null, liveLink = null }) {
          if (req.caller.kind === 'user' && req.caller.subject) return true;
          page(req, res, {
              title: 'Sign in', canonicalPath: req.path,
--            body: `<h1>Sign in</h1><p>OpenRestream uses your OpenVibe account.</p><p><a href="/auth/login?next=${encodeURIComponent(req.originalUrl)}">Sign in with OpenVibe</a></p>`,
++            body: `<h1>Sign in</h1><p>OpenRestream uses your OpenVibe account.</p><p><a class="sc-btn sc-primary" href="/auth/login?next=${encodeURIComponent(req.originalUrl)}">Sign in with OpenVibe</a></p>`,
          }, 401);
          return false;
      }