Phase-2 Slice 12c (user directive: use the app's circular controls, no invented
buttons; fix the glyph-stuck-left bug).
- Hero §3.6: deleted the local ActionCircle; the 4 hero controls are now the
shared CircleAction (Play primary = filled white disc + black glyph; the loading
spinner is now available = more 1:1). Added `enabled` to CircleAction (additive).
- All MyQBZ modal footers (Create / Edit / Mix / AddTo / Discography) now use the
shared QbzPrimaryButton (+ a new `destructive` variant for Delete) and a new
shared SecondaryButton (promoted from AppearanceSettings' inline copy).
QbzPrimaryButton auto-sizes as a footer chip while staying full-width in login
(verified: login stretches it in a VerticalLayout; footers take preferred width).
- Kept legitimately-local icon+label controls (grid "+ New" CTA, AddToMixtape
picker chips, toolbar sort/filter/view-mode pills) but verified every glyph is
centered.
- Fixed 3 glyph-stuck-left bugs (DiscographyBuilder checkboxes used non-snapped
centering -> the Math.round(.../1px)*1px crisp idiom).
Backend crates untouched. cargo check -p qbz-slint green.
cc
vicrodh
16e6232220