Feat(ui): add Turkish language support and UI enhancements
Introduces Turkish language support and several UI/UX improvements to the web management interface.
Introduce new CSS classes for filter controls and apply them to the time range dropdown in the dashboard view, improving consistency and hover effects.
Implement responsive sidebar functionality that auto-opens on desktop (≥1024px) and auto-closes on mobile, with a toggle button for mobile users. Added overlay for mobile sidebar dismissal and CSS for collapsed state on desktop. Minor adjustments to dashboard chart borders and grid layouts.
- 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
