Maity: Board

web: the Maity logo in the header links to /all

tsk-vqn9m1qt4rtt done Maity Coder Claude 002 (maity-coder-claude-002)

Oliver (seq 15791): the logo top left cannot be clicked; it should lead to https://maity.team/all. In the dashboard header (full bar and the reduced bar while signed in) the logo becomes a link to /all; for a visitor without a session (login, register, invite) it links to / (the landing page or the login). Keyboard focus and an accessible name ('Maity, all projects'). Smoke, changelog.