- Created contrast utility (apps/web/src/utils/contrast.ts)
- getRelativeLuminance() - calculates WCAG relative luminance
- getContrastRatio() - calculates contrast ratio between colors
- meetsWCAGAA() / meetsWCAGAAA() - validates WCAG standards
- parseRGB() - parses RGB strings from CSS variables
- Created contrast test suite (apps/web/src/__tests__/contrast.test.ts)
- Tests all design system color combinations
- Validates primary text (white) on all backgrounds
- Validates secondary text (dim) on all backgrounds
- Validates text with opacity variants
- All combinations must meet WCAG AA (4.5:1)
- Added contrast test step to CI workflow
- Prevents contrast ratio regressions
- Action 11.1.1.5 complete
- Created comprehensive contrast test report
- Tested all text color combinations (white, dim, opacity variants)
- Tested on all 5 background colors (void, ink, graphite, slate, steel)
- All combinations exceed 4.5:1 ratio requirement
- Primary text: 15.9:1 to 20.6:1 (excellent)
- Secondary text: 6.1:1 to 7.8:1 (good)
- Text with opacity: 11.8:1 to 16.2:1 (excellent)
- No violations found - all text meets WCAG AA
- Action 11.1.1.3 complete
- Updated button variants (outline, ghost) to use text-white
- Updated empty state descriptions to use text-white with opacity
- Updated page subtitles to use text-white opacity-80
- Updated Navbar interactive elements to use text-white
- Preserved text-kodo-secondary for truly secondary info (metadata, timestamps, helper text)
- Action 11.1.1.2 complete
- Created GRID_SYSTEM.md documentation
- Documents 8px base grid system for visual rhythm
- Spacing scale table with 8px-aligned values
- Usage guidelines and examples
- Migration notes for current spacing system
- Action 11.2.1.1 complete
- Changed --kodo-text-main from #F3F3E0 (Quiet Paper) to #FFFFFF (white)
- Improves contrast and readability on dark backgrounds
- Better WCAG AA compliance
- Action 11.1.1.1 complete
- Created firstTime utility for detecting first-time users
- Functions: isFirstTime, markAsNotFirstTime, isOnboardingCompleted, markOnboardingCompleted
- Uses localStorage to persist state across sessions
- Graceful error handling with logger warnings
- SSR-safe (returns false on server)
- Can be integrated with Onboarding component
- Action 10.4.1.4 complete
- Moved view mode toggle from two prominent buttons to dropdown menu
- Single button shows current view mode icon (Grid or List)
- Dropdown contains both view options with icons and labels
- Active option highlighted in dropdown
- Reduces visual prominence while preserving functionality
- List view kept as per audit recommendation
- Action 10.2.1.2 complete
- Added Tabs component to organize Activity Feed content
- Chart and Activity List now in separate tabs (Graphique, Activité)
- Reduces cognitive load by showing one view at a time
- Default tab is 'Graphique' (Chart)
- Tabs are inside the collapsible Activity Feed section
- Action 10.1.1.3 complete
- Created collapsible AdvancedFilters component for progressive disclosure
- Uses existing Collapsible component for consistency
- Supports controlled and uncontrolled modes
- Customizable label and optional filter icon
- Follows Kodo design system styling
- Ready to wrap Genre, Format, and Sort filters in LibraryPage
- Action 10.3.1.1 complete
- Added comprehensive visual test section to DesignSystemDemoPage
- Tests all 5 variants (default, destructive, outline, secondary, ghost)
- Tests all 4 sizes (sm, default, lg, icon)
- Tests all variant × size combinations (20 total)
- Tests normal and disabled states
- Available at /design-system route for visual verification
- Action 9.3.1.6 complete
- Removed neon, glass, premium, and link variants from Button component
- Replaced variant="link" in PostCard with variant="ghost" (with underline)
- Replaced variant="premium" in LibraryPage and FAB with variant="default"
- Updated COMPONENT_USAGE.md to reflect removed variants
- Remaining variants: default, destructive, outline, secondary, ghost
- Action 9.3.1.2 complete
- Added no-restricted-syntax rule to detect native <button> elements
- Rule warns developers to use Button component from @/components/ui/button
- Ensures consistent styling, accessibility, and design system compliance
- Rule tested and working correctly
- Action 9.2.1.3 complete
- Added no-restricted-syntax rule to detect Tailwind default color classes
- Warns on default colors (slate, gray, zinc, red, blue, etc.) in className strings
- Prompts developers to use Kodo design system colors instead
- Rule tested and working - correctly flags violations
- Action 9.1.1.4 complete
