feat(atlas): author GJ 71 (Gateway/Tau Ceti) body catalog
First system fully authored via atlas author/commit workflow.
7 bodies + 1 station: Threshold (primary garden, 600M), Arden
(secondary garden, 500M), Verantis (domed moon, 20M), inner rocky,
outer ice, debris disk, oort cloud, Horizon Station (80M).
Atlas CLI updated with proper_name, population, hydrosphere,
economic_role, settlement_pattern, industrial_corridor fields in
proposal format. Commit-system writes all fields to DB.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.6
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