- Use Popup component for map-anchored tooltips (moves with lat/lng)
- Use filter+highlight layer for hover instead of feature state
- fitBounds to [-168,-56,168,74] to trim polar dead zones
- Country no-data color #1e293b vs ocean #0a1628 — clear contrast
- Visible borders rgba(148,163,184,0.18)
- Add 1h and 12h interval buttons to analytics UI
- formatTs handles 1h/12h with time-only format
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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