Tier 2. Admin/board alone in an empty space now gets a guided
getting-started checklist (invite members, set up onboarding, first
task, connect payments) instead of a grid of zeros; reverts to the
normal dashboard once there is any activity. Onboarding: Skills is now
a controlled field (edits survive Back/forward, no normalize surprise)
and a hint appears when a required acknowledgement is unchecked.