feat(content): add Sol city data to sol_markers/ for Luna, Mars, Europa (#849)
Adds city sections to three sol_markers/ feature files so sol_import.py
produces inhabited bodies with atlas_cities coverage.
luna_features.json (GJ0d-1, 350M pop): 3 cities — Artemis (capital, south
polar region, water ice access, 200M), Tranquility Station (Mare
Tranquillitatis, historic first settlement, 90M), Selene (Mare Imbrium,
industrial hub, 60M).
mars_features.json (GJ0e, 1.2B pop): 4 cities — Olympia (capital, Olympus
Mons region, lava tube habitat, 450M), Hellas Station (Hellas Basin, deep
low-pressure warmth, 350M), Elysium City (Elysium Mons, 250M), Chryse
Landing (Chryse Planitia, historic Viking site and port gateway, 150M).
outer_features.json (GJ0f-2 Europa, 30M pop): 2 cities — Conamara Station
(capital, Conamara Chaos, geothermal near ice plate faults, 20M), Pwyll
Base (Pwyll Crater, sub-ice ocean access, 10M).
earth_features.json already had comprehensive city coverage (40+ cities)
and required no changes.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
jpmschweitzerandClaude Sonnet 4.6
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