Introduce an appearance preference with modern, classic, and custom
modes and a persisted custom theme palette. Add helpers to load,
persist, and apply appearance and custom colors, and wire them into the
app settings lifecycle. Implement a comprehensive light theme and
appearance presets using CSS variables so custom palettes are applied
consistently across the UI, and include appearance in analytics when
settings are saved.
- Persist and apply appearance and custom color palette to :root
- Add muted light theme plus classic/modern presets and custom mapping
- Include appearance and customTheme in settings save and analytics payload
Christoph
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