64 lines
2.0 KiB
Markdown
64 lines
2.0 KiB
Markdown
# [STORY-042] Add Dark Mode Toggle to Settings
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**Owner**: AG-UI
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**Status**: TODO
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**Epic**: [EPIC-005] User Experience Improvements
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**Priority**: P2
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**Estimate**: 5 story points
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## User Story
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As a user who works at night,
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I want to toggle dark mode in the settings,
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So that I can reduce eye strain and improve readability in low-light conditions.
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## Acceptance Criteria
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### AC1: Settings Toggle Available
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**Given** I am on the settings page
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**When** I navigate to the "Appearance" section
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**Then** I should see a dark mode toggle switch
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### AC2: Theme Switches Immediately
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**Given** I am viewing the app in light mode
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**When** I toggle dark mode on
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**Then** the entire UI should switch to dark theme within 200ms
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### AC3: Preference Persists
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**Given** I have enabled dark mode
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**When** I close and reopen the application
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**Then** dark mode should still be active
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### AC4: System Preference Detection
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**Given** I have not set a preference
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**When** the app loads for the first time
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**Then** it should default to my system's dark mode preference
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## Technical Notes
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- Use CSS custom properties for theme colors
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- Store preference in localStorage: `theme: 'light' | 'dark' | 'system'`
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- Listen to `prefers-color-scheme` media query for system default
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- Ensure all components support both themes
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- Add transition animations for smooth mode switching
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## Testing Strategy
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- Test theme switching in all major browsers (Chrome, Firefox, Safari)
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- Verify localStorage persistence across sessions
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- Test system preference detection on different OS
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- Validate WCAG contrast ratios in dark mode
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- Test with keyboard navigation (accessibility)
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## Definition of Done
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- [ ] Dark mode toggle implemented in settings UI
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- [ ] Theme preference stored in localStorage
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- [ ] All components styled for dark mode
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- [ ] System preference detection working
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- [ ] Unit tests for theme switching logic
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- [ ] E2E tests for toggle interaction
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- [ ] Documentation updated with theme implementation details
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- [ ] Deployed to staging and tested
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- [ ] Accessibility audit passed (WCAG AA)
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