608b0b7fe8
- 4 built-in themes (Default, Pastel, High Contrast, Ocean Blue) seeded as JSON files in /config/themes/ on startup; custom themes can be created, edited, and deleted via the new admin Appearance page - All theme tokens applied via JS inline CSS properties (no hardcoded CSS blocks) - New `color_mode` column on users table (migration dd6ad2f2c211); users can override the admin-set global default in Settings - Backend: GET/PATCH /settings/appearance, full CRUD on /settings/themes - Frontend: AdminAppearancePage with theme grid + colour pickers, SettingsPage replaces placeholder with mode selector, useTheme rewritten to fetch from API Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>