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/src/lib.rs

@@ -1,6 +1,7 @@
 // The Settled Reach - Simulation Server
 // Rust/bevy_ecs simulation server for D-010 client-server architecture
 
+pub mod atlas;
 pub mod bookmark;
 pub mod bridge;
 pub mod cause_chain;