9-task TDD plan against the re-grounded spec, building on the existing
AcDream.App/UI scaffold: RuntimeOptions toggles, textured-sprite path in
TextRenderer (+ frag uUseTexture=2, + TextureCache size overload), Step-0 chrome
prove-out, UiNineSlicePanel + UiMeter widgets, wire UiHost + live Vitals
(render-only) retiring TS-30, controls.ini loader, MarkupDocument (XML ->
UiElement tree), and the IUiRegistry plugin surface. Exact code per step; pure
parsers TDD'd in AcDream.App.Tests, GL/visual bits user-verified.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
