Remove the reserved=1 corp-HQ city-pool cross-reference (duplicate co-named cities); corp_specialization keyed on the D-237 vocabulary extended 27->30; authored corp_hq_placement.toml {CityTenant,Standalone} map; headquarters_body backfill via lifted most-populated-body heuristic + body-type tiebreak; standalone HQs emitted as ordinary settlement rows; Zipf rank-size population spread from bodies.population at import; settlement_class defaults PopulationBudget + settlement_name_locked.toml hero pins; retire orphaned populate-corporations.sh; regen systems.db.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>