4cd36d83e3
The dashboard's empty-state ("No hosts yet.") was gated on
HostCount == 0 alone, which hid the pending-hosts panel — and
the inline accept form — for the most common first-run scenario:
operator just installed an agent that announced, the fleet has
zero accepted hosts, and the only thing the operator needs to do
is review fingerprint + click Accept.
Tighten the gate so the empty state only shows when there are
truly zero hosts and zero pending announces. With a pending
host, fall through to the regular dashboard layout so the
approval queue is visible and actionable.
Caught by the e2e enrol-via-announce smoke test (now unblocked
on PR #23).