feat(simulation): generation pipeline Rust types + SystemNameIndex (#900, #912-#926)

WorldTier enum fixed to Epicenter/Regional/Backwater/Passage/Waypoint
(D-218). Full enum implementations for ComplexityTier, SettingType,
SettlementClass, DistrictType, PoliticalArchetype, FoundingOrientation,
TerritorialStatus, GeographicAttractor, AttractorType, and
CompatibilityMatrix. SystemNameIndex with Aho-Corasick text scanning
for background pre-generation queue integration (D-206).

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

server/Cargo.lock

@@ -1296,9 +1296,11 @@ dependencies = [
 name = "settled-reach-server"
 version = "0.1.37"
 dependencies = [
+ "aho-corasick",
  "bevy_app",
  "bevy_ecs",
  "bevy_tasks",
+ "bytemuck",
  "clap",
  "crossbeam-channel",
  "econ-sim",