data(atlas): complete hop-2 body catalogs + corporations table

Hop-2 systems authored: Tessera/Corvel (legal archive, 1.3B),
Proxima/Ancora (first colony, Zheng He lore, 400M),
Meridian/Provenance (boomtown, 150M), Barnard's Star/Verada
(commuter town, 2B, wiki prose adjusted for surface-majority pop),
Prometheus/Galen+Chiron+Site Anterior (longevity monopoly, 55K),
Cygni B/Ferrath+Kihl Works (shipyards, 1.8B, 7 combines named),
Cairn (the anomaly — 7 apertures, 2 garden planets, zero population).

New: corporations table in systems.db schema. 20 records populated
from wiki/corporations/ + DSMC + 7 Cygni B combines (Vethara,
Kossler-Drun, Amberan Works, Talavec & Sons, Orren-Skel, Marhoud
Fabrication, Drevast Extraction).

Atlas CLI: fixed planet count defaults (6-8 minimum per star type,
was 2-4). Miri added Zheng He lore to Proxima wiki.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/data/systems-schema.sql

@@ -189,6 +189,21 @@ CREATE TABLE IF NOT EXISTS stations (
     updated_at TEXT DEFAULT (datetime('now'))
 );
 
+-- Corporations, combines, and major economic entities
+-- Source: wiki/corporations/ pages (canonical)
+CREATE TABLE IF NOT EXISTS corporations (
+    corp_id TEXT PRIMARY KEY,           -- slug from wiki (e.g., "gate-corporation", "vethara")
+    proper_name TEXT NOT NULL,          -- display name
+    corp_type TEXT NOT NULL,            -- corporation, combine, syndic, institution, independent
+    scope TEXT,                         -- reach-wide, sector, system, local
+    headquarters_system TEXT REFERENCES star_systems(system_id),
+    headquarters_body TEXT,             -- body_id or station_id
+    specialization TEXT,                -- primary product/service
+    parent_corp TEXT REFERENCES corporations(corp_id),
+    notes TEXT,
+    updated_at TEXT DEFAULT (datetime('now'))
+);
+
 -- Indexes
 -- astronomical_id removed: system_id IS the GJ catalog number
 CREATE INDEX IF NOT EXISTS idx_star_systems_sector ON star_systems(geographic_sector);
@@ -207,3 +222,5 @@ CREATE INDEX IF NOT EXISTS idx_bodies_inhabited ON bodies(inhabited);
 CREATE INDEX IF NOT EXISTS idx_stations_system ON stations(system_id);
 CREATE INDEX IF NOT EXISTS idx_stations_orbits ON stations(orbits_body_id);
 CREATE INDEX IF NOT EXISTS idx_stations_type ON stations(station_type);
+CREATE INDEX IF NOT EXISTS idx_corps_system ON corporations(headquarters_system);
+CREATE INDEX IF NOT EXISTS idx_corps_type ON corporations(corp_type);