fix(ui): folds tokens for settings/profile/glass invented vars (native-cinny audit 2/N)

- DenoiseTester: --bg-card/--border-color/--accent-green/--accent-orange -> color.Surface.*/Success/Primary
- ProfileDecoration: --accent-cyan/--bg-surface-variant -> color.Primary.Main/SurfaceVariant.Container
- Profile: --tc-critical/warning-normal -> color.Critical/Warning.Main
- UserRoomProfile: --tc-positive/warning-normal/--tc-surface-low-contrast/--bg-surface-variant -> color tokens
- Sidebar glass: hardcoded rgba bg/border -> color-mix on color.Surface.Container + SurfaceVariant.ContainerLine
  (also fixes the glass looking wrong on light themes — was always near-black)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/components/sidebar/Sidebar.css.ts

@@ -17,10 +17,10 @@ export const Sidebar = style([
 ]);
 
 export const SidebarGlass = style({
-  backgroundColor: 'rgba(3, 5, 8, 0.55)',
+  backgroundColor: `color-mix(in srgb, ${color.Surface.Container} 55%, transparent)`,
   backdropFilter: 'blur(12px)',
   WebkitBackdropFilter: 'blur(12px)',
-  borderRight: '1px solid rgba(255,255,255,0.06)',
+  borderRight: `${config.borderWidth.B300} solid ${color.SurfaceVariant.ContainerLine}`,
 });
 
 export const SidebarStack = style([