The codeman_session cookie was only set on the Basic Auth path with a fixed
lifetime from login and never refreshed, while the server-side session store
slides its TTL (refreshOnGet). So the browser cookie expired mid-use, the next
request arrived cookie-less and fell through to Basic Auth, popping the native
username/password dialog — perceived as a random logout while actively working.
Re-issue the cookie on every authenticated (valid-cookie) request so the browser
lifetime tracks the server-side sliding TTL.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
