Improve explorer and console UI

[raymondjacobson]

Summary

• Replace Leaflet flat map with COBE WebGL globe showing validator node locations
• Animated green laser arcs from block proposer to other validators on each new block via SSE
• Play events appear as purple dots that fade to white, positioned at geographic location
• Side-by-side layout: globe (left) + transaction analytics (right)
• Dark theme normalization across explorer and console (tiles #0a0a0a/#141414, borders #1a1a1a, greens green-400)
• Console Franken UI border/divider overrides to match explorer
• Show version number on console validators page (consensus nodes tab)
• Debug play endpoint for devnet testing
• Search bar font size reduction
• Fix block height flash of "1" on page load

Test plan

• Verify globe renders with green validator dots on dashboard
• Confirm laser arcs fire on each new block (every ~1.3s on devnet)
• Test play events via curl -X POST "https://node1.oap.devnet/api/debug/play?city=Tokyo&region=Kanto&country=JP"
• Check play dots appear as purple → white → fade (1s decay)
• Rotate globe and confirm play dots stay geostationary
• Verify console /console pages have matching dark theme
• Check console validators page shows version next to each consensus node
• Confirm block height shows "-" then correct number (no flash of "1")

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