Read-only population of the gmInventoryUI tree: bind 0x21000023 by id,
fill the 'Contents of Backpack' grid + the right-strip pack-selector from
ClientObjectTable, drive the vertical burden meter, render the Type-0
captions. Faithful selector + full faithful burden meter (per brainstorm).
Ported AC algorithms with decomp anchors: CACQualities::InqLoad (0x0058f130),
EncumbranceSystem::EncumbranceCapacity (0x004fcc00) / Load (0x004fcc40),
gmBackpackUI::SetLoadLevel (0x004a6ea0), UIElement_Meter::DrawChildren
(0x0046fbd0) / Initialize (0x0046f7b0, m_eDirection from property 0x6f).
Key finding: BuildMeter's single-image sprite assignment is already correct
(meter-own=track, child=fill); only vertical fill is new.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
