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settled-reach/docs/atlas/proposals/GJ845.json
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jpmschweitzerandClaude Opus 4.6 db241b88bd refactor(schema): rename biome_summary to planet_class (D-188) 
"Biome" describes per-zone vegetation classification (Whittaker table).
"Planet class" describes overall planetary character. The conflation
caused the planet generator to misclassify ~270 bodies as barren.

Scope: systems.db column, schema SQL, Rust atlas code, wiki table
headers (Biome → Class), atlas proposal JSONs, all docs/decisions,
tooling scripts. Also normalizes atmosphere vocabulary (breathable →
standard) and expands planet class mapping to all 26 wiki values.
Unknown classes default to temperate for modder safety.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-04-06 17:10:35 +02:00

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{
"system_id": "GJ 845",
"proper_name": "Cairn",
"star_type": "K",
"spectral_class": "K5V",
"wiki_data": {
"habitable_count": 2,
"inhabited_count": 0,
"has_gas_giant": true,
"has_asteroid_belt": true,
"has_horizon_station": true,
"raw_bodies_line": null
},
"bodies": [
{
"body_id": "GJ845b",
"proper_name": null,
"body_type": "planet",
"orbit_index": 1,
"parent_body_id": null,
"inhabited": false,
"population": 0,
"mass_class": "terrestrial",
"surface_gravity": 0.24,
"orbital_period_days": 14,
"rotation_period_hours": 340,
"atmosphere": "none",
"planet_class": "barren",
"hydrosphere": "none",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "inner scorched"
},
{
"body_id": "GJ845c",
"proper_name": null,
"body_type": "planet",
"orbit_index": 2,
"parent_body_id": null,
"inhabited": false,
"population": 0,
"mass_class": "terrestrial",
"surface_gravity": 0.58,
"orbital_period_days": 60,
"rotation_period_hours": 1440,
"atmosphere": "toxic",
"planet_class": "barren",
"hydrosphere": "none",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "Venus-analog"
},
{
"body_id": "GJ845d",
"proper_name": null,
"body_type": "planet",
"orbit_index": 3,
"parent_body_id": null,
"inhabited": false,
"population": 0,
"mass_class": "terrestrial",
"surface_gravity": 0.88,
"orbital_period_days": 200,
"rotation_period_hours": 23.0,
"atmosphere": "breathable",
"planet_class": "temperate",
"hydrosphere": "ocean",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "habitable, garden-grade \u2014 nobody lives here"
},
{
"body_id": "GJ845d-1",
"proper_name": null,
"body_type": "moon",
"orbit_index": 1,
"parent_body_id": "GJ845d",
"inhabited": false,
"population": 0,
"mass_class": "dwarf",
"surface_gravity": 0.07,
"orbital_period_days": 12.0,
"rotation_period_hours": 288,
"atmosphere": "none",
"planet_class": "barren",
"hydrosphere": "none",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": ""
},
{
"body_id": "GJ845e",
"proper_name": null,
"body_type": "planet",
"orbit_index": 4,
"parent_body_id": null,
"inhabited": false,
"population": 0,
"mass_class": "terrestrial",
"surface_gravity": 0.72,
"orbital_period_days": 380,
"rotation_period_hours": 20.0,
"atmosphere": "breathable",
"planet_class": "temperate",
"hydrosphere": "rivers",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "second habitable \u2014 also empty"
},
{
"body_id": "GJ845f",
"proper_name": null,
"body_type": "planet",
"orbit_index": 5,
"parent_body_id": null,
"inhabited": false,
"population": 0,
"mass_class": "terrestrial",
"surface_gravity": 0.42,
"orbital_period_days": 700,
"rotation_period_hours": 16.5,
"atmosphere": "thin",
"planet_class": "arid",
"hydrosphere": "none",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": ""
},
{
"body_id": "GJ845g",
"proper_name": null,
"body_type": "planet",
"orbit_index": 6,
"parent_body_id": null,
"inhabited": false,
"population": 0,
"mass_class": "terrestrial",
"surface_gravity": 0.35,
"orbital_period_days": 1100,
"rotation_period_hours": 18.0,
"atmosphere": "none",
"planet_class": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer frozen"
},
{
"body_id": "GJ845h",
"proper_name": null,
"body_type": "planet",
"orbit_index": 7,
"parent_body_id": null,
"inhabited": false,
"population": 0,
"mass_class": "terrestrial",
"surface_gravity": 0.25,
"orbital_period_days": 3500,
"rotation_period_hours": 18.0,
"atmosphere": "none",
"planet_class": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": "outer ice world"
},
{
"body_id": "GJ845-belt",
"proper_name": null,
"body_type": "asteroid_belt",
"orbit_index": 8,
"parent_body_id": null,
"inhabited": false,
"population": 0,
"mass_class": null,
"surface_gravity": null,
"orbital_period_days": null,
"rotation_period_hours": null,
"atmosphere": null,
"planet_class": null,
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": ""
},
{
"body_id": "GJ845h",
"proper_name": null,
"body_type": "gas_giant",
"orbit_index": 9,
"parent_body_id": null,
"inhabited": false,
"population": 0,
"mass_class": "gas_giant",
"surface_gravity": null,
"orbital_period_days": 3000,
"rotation_period_hours": 12.0,
"atmosphere": "dense",
"planet_class": null,
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": ""
},
{
"body_id": "GJ845h-1",
"proper_name": null,
"body_type": "moon",
"orbit_index": 1,
"parent_body_id": "GJ845h",
"inhabited": false,
"population": 0,
"mass_class": "dwarf",
"surface_gravity": 0.1,
"orbital_period_days": 4.0,
"rotation_period_hours": 96,
"atmosphere": "none",
"planet_class": "barren",
"hydrosphere": "none",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": ""
},
{
"body_id": "GJ845h-2",
"proper_name": null,
"body_type": "moon",
"orbit_index": 2,
"parent_body_id": "GJ845h",
"inhabited": false,
"population": 0,
"mass_class": "dwarf",
"surface_gravity": 0.06,
"orbital_period_days": 9.0,
"rotation_period_hours": 216,
"atmosphere": "none",
"planet_class": "frozen",
"hydrosphere": "ice",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": ""
},
{
"body_id": "GJ845h-3",
"proper_name": null,
"body_type": "moon",
"orbit_index": 3,
"parent_body_id": "GJ845h",
"inhabited": false,
"population": 0,
"mass_class": "dwarf",
"surface_gravity": 0.04,
"orbital_period_days": 16.0,
"rotation_period_hours": 384,
"atmosphere": "none",
"planet_class": "barren",
"hydrosphere": "none",
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": ""
},
{
"body_id": "GJ845-oort",
"proper_name": null,
"body_type": "oort_cloud",
"orbit_index": 10,
"parent_body_id": null,
"inhabited": false,
"population": 0,
"mass_class": null,
"surface_gravity": null,
"orbital_period_days": null,
"rotation_period_hours": null,
"atmosphere": null,
"planet_class": null,
"hydrosphere": null,
"economic_role": null,
"settlement_pattern": null,
"industrial_corridor": null,
"notes": ""
}
],
"stations": [
{
"station_id": "GJ845-oort-S1",
"proper_name": "Horizon Station",
"orbits_body_id": "GJ845-oort",
"station_type": "horizon",
"population": 0,
"economic_role": "transit",
"docking_class": "standard",
"has_gate_infrastructure": true,
"notes": "7 apertures, unmanned, most connected empty system in the Reach"
}
]
}
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