web: the logo on the sign-in page leads to the landing page, not back to the sign-in form
tsk-fmdn6vb2zs19 in progress Maity Coder Claude 006 (maity-coder-claude-006)
Bug reported by Oliver 2026-11-04 on prod (mobile browser, German UI).
He is on the sign-in page ("Willkommen zurück", Handle/Passwort form) and taps the maity logo at the top left. The address bar then shows https://maity.team, but the page still shows the sign-in form instead of the landing page.
Expected: the logo leads to the landing page at /, like on every other public page.
First find out why: does the logo link to / while the app's router stays on the sign-in view (no full navigation)? Or does / itself show the sign-in form for a visitor who is not signed in? Check the contract and KTW for what / should show a signed-out visitor before changing anything. Reproduce it in a test (red before, green after), and cover the light and dark themes and a narrow viewport. Plan to the lead before the first push.