Update footer links to https://jss.live/ (#329) - #330

Summary

Updates the auth-page footer in src/auth/middleware.js to point to https://jss.live/ (the canonical JSS project home and docs hub).

Closes #329.

Change

     <p class="footer">
-      Powered by <a href="https://sandy-mount.com">Sandymount</a> •
-      <a href="https://solidproject.org">Learn about Solid</a>
+      Powered by <a href="https://jss.live/">JSS</a> •
+      <a href="https://jss.live/docs/">Docs</a>
     </p>

Why

• jss.live is now the canonical project home and docs hub
• Aligns the auth-page footer with the LWS-aligned positioning announced on public-solid (April 23, 2026)
• Project-focused footer; removes orphaned references to hosts that are no longer the primary identity

Scope

• Single file changed
• No behavioural changes
• Auth-page error/login templates only
• Two link updates

Test plan

• Verified diff matches the issue's proposed change
• Manually browse a 401 page to confirm footer renders with new links (post-merge / on next deploy)
• Confirm https://jss.live/ and https://jss.live/docs/ resolve

Closes

Closes #329