fix(boltbot): address web interface guidelines review
- color-scheme: dark on html, theme-color meta, touch-action: manipulation
- prefers-reduced-motion: disable animations/transitions globally
- Intl.RelativeTimeFormat + Intl.NumberFormat replace hardcoded formats
- URL state sync: viewMode, selectedTiers, anomalyOnly persist via
search params (replaceState)
- Skip-to-content link for keyboard navigation
- tabular-nums on all numeric displays (stats, duration, counts)
- min-w-0 on truncated flex/grid children
- overscroll-behavior: contain on dialog panel
- aria-live on loading skeleton
- "Loading..." → "Loading…" (proper ellipsis)
b2c6b055ee