- Columns can be resized by dragging the border between them
- Column widths persist during navigation (150px min, 500px max)
- Container scrolls horizontally when columns exceed available space
- Auto-scrolls to show newly opened columns
- Resize handle highlights on hover/active state
Only reset columns when bucket changes, not when prefix changes.
Internal folder navigation is handled by selectFolder() which
properly appends new columns while preserving previous ones.
- Fix duplicate tsview-app rendering by checking if element already exists in HTML
- Fix column navigation to expand horizontally instead of resetting
- Remove navigate event dispatch from column folder selection to preserve column state
