Availability sets (routes + menu shortcuts, Moving/unknown), signal gating, palette and cursors per availability, red/blue active states, adaptive label wrapping, left-click hint paths, hover-hint timer lifecycle, and pending-target clearing. Lifts the PR diff coverage back over the 80 percent gate (measured 88 percent locally). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>