- Config: sidebar-background supports plain hex (#336699) or
light/dark syntax (light:#fbf3db,dark:#103c48)
- Config: sidebar-tint-opacity overrides tint opacity
- Settings UI: per-scheme color pickers, opacity slider (0-70%), reset
- SidebarBackdrop resolves light/dark hex based on @Environment colorScheme
- applySidebarAppearanceToUserDefaults guards on rawSidebarBackground presence
so UI picks survive appearance toggles when no config is set
- Stale light/dark UserDefaults keys cleared when config switches from
dual-mode to single or sidebar-background is removed
- applyPreset() and Reset Tint clear per-scheme overrides
- Debug snapshot (combinedPayload + copySidebarConfig) includes new keys
- ColorPicker labels use String(localized:) per localization policy
- Opacity slider capped at 0.7 to match debug view vibrancy constraint
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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