- Replace Tailwind CDN with local build (PostCSS + autoprefixer + daisyui)
- Add CSS build scripts with automatic prepare hook on npm install
- Create account-actions.js service layer with unified response format
- Extend ErrorHandler.withLoading() for automatic loading state management
- Add skeleton screens for initial load, silent refresh for subsequent updates
- Implement loading animations for async operations (buttons, modals)
- Improve empty states and add ARIA labels for accessibility
- Abstract component styles using @apply (buttons, badges, inputs)
- Add JSDoc documentation for Dashboard modules
- Update README and CLAUDE.md with development guidelines
- Add time range selector (1H/6H/24H/7D/All) with preference persistence
- Implement smart X-axis label formatting for multi-day usage data
- Standardize global component spacing and fix CSS @apply limitations
- Add elegant empty state UI for charts when filtered data is absent
- Update i18n translations for all new dashboard features
