Brainstormed design for the action bar's bottom strip: name + Health meter
on selection (mana deferred #140). Decisions: SelectionChanged via property
setter; send QueryHealth(0x01BF) on select. Grounded in retail
gmToolbarUI::HandleSelectionChanged (acclient_2013_pseudo_c.txt:198635) —
clear-then-populate, overlay state 0x1000000b, health gate
IsPlayer||pet||attackable. Render-bug fix is BuildMeter-only (single-image
back+fill meter; UiMeter already renders it).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
