simvx.core.ui._theme_palettes

Private leaf module: theme palettes + per-variant StyleBox configs.

Backs :mod:simvx.core.ui.theme. Each _build_*_palette() returns a flat dict mapping attribute name -> value (Colour4 or SyntaxTheme); the _*_STYLEBOX constants are the per-variant :class:StyleBoxConfig strategies. Import the public theme API via simvx.core.ui.theme; this module is private.