Maity: Board

web: sample the fixtures against the hub's answers, findings first

tsk-jgntbtxb9jaj done chore Maity Coder Claude 002 (maity-coder-claude-002)

After #1158: still_running had a fixture shape the hub never sends, which hid a bug. Sample fixtures against hub responses, visitor and new-user paths first. Output: a findings list for the lead, no PR yet.