v0.41.0

Full-screen operator console + the new signals mirrored into the TUI.

The telnet/browser console now uses the whole terminal width instead of a
72-column board floating in the middle: the rules span the full width, the header
puts the title on the left and the online/on-call/clock stats on the right edge,
and each room row right-aligns its live link RTT (idle qualify round-trip) and
any notable contact status. A compact status line under the header shows the same
two signals the web dashboard got in 0.40.0 — trunk SIP registration (green
Registered / red Unregistered / grey Unknown) and resident-STT health (green
resident / amber CLI fallback). It's still vertically centered and degrades
cleanly on a narrow window (the right-aligned detail drops rather than wrapping).

The trunk-registration and STT-health reads are on their own 20s throttle (they
each cost an extra AMI login / loopback probe), separate from the ~3s board poll,
so console AMI churn stays negligible. No behavior change to calls or routing.