Square-card (music) grids had zero delegate spacing - the only
separation was each card's internal 3px padding, and square shapes are
excluded from the full-card spacing path, so playlist and album tiles
sat nearly edge to edge. Square grids now get an 8px cross/main gutter
(automotive keeps its larger spacing); poster, list, and full-card
layouts are unchanged.
Grep-verified dead surface across shared widgets: the app-menu system's minWidth/maxWidth/childPadding/alignmentOffset knobs threaded through four layers with no caller ever passing them; FocusableListTile's suppressInitialSelect/hoverColor/textColor/iconColor machinery (~55 lines) reachable by no call site; OptimizedMediaImage.playlist with zero constructions; TvSpotlightBackground's primary-action button that neither caller can render; MediaGridDelegate.createDelegate whose only caller was a test (MediaGridGeometry.resolve is the single delegate composition now); and the CustomAppBar->Config->DesktopTopBar chain collapsed onto DesktopSliverAppBar with its ~11 never-passed passthrough params (snap kept — real callers pass it).
A head unit is a large screen sitting an arm's length further away than a phone,
and Plezy drew phone-sized controls on it: the primary button measured 8.3 mm
against the 64 dp a car needs. The whole surface is now scaled - 1.35 by default,
adjustable in Appearance - by giving the app a smaller logical viewport and
scaling the result back, so text, spacing and touch targets grow together instead
of a font size being nudged in isolation.
The scale sits above the messenger and the root Scaffold so snackbars and dialogs
are scaled too, and insets are divided back into the scaled space so a system bar
still reserves its physical size. A scaled surface is also a short one: the setup
screen's fixed offsets and the now-playing transport are laid out to survive it,
and a mistyped scale in a hand-edited settings file is clamped rather than
failing startup.
Un-gates music libraries; adds CardShape.square plumbing (circular
artists), artists/albums/tracks browse groupings with per-grouping
sorts, audio playlists tab, artist + album detail screens with dpad
track rows, music context-menu actions, and a stub MusicPlaybackService
seam for the upcoming engine.
edde746