The center-click handler used closure-captured variables (russianMonth and
originalData) from the initial renderChart call. When switching months via
selectMonth, these values were never updated, causing clicks on the center
to always restore December's data.
Changed originalData from a local variable to a module-level variable
(originalSunburstData) that gets updated when months change.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Replace dropdown selector with a visual navigator featuring:
- Left/right arrow buttons for month navigation
- Clickable month buttons with mini donut chart previews
- Russian month labels (e.g., "Январь'25")
- Responsive layout for mobile screens
- Arrows disable at navigation boundaries
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
