style(simulation): cargo fmt

Formatting normalization caught by pre-push hook.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/simulation/save_state.rs

@@ -39,6 +39,7 @@ use bevy_ecs::entity::Entity;
 use bevy_ecs::world::World;
 use serde::{Deserialize, Serialize};
 
+use crate::bookmark::SelectedBookmark;
 use crate::knowledge::graph::KnowledgeGraph;
 use crate::knowledge::registry::StableEntityId;
 use crate::knowledge::types::StableId;
@@ -51,7 +52,6 @@ use crate::npc::{
     PersonalityTraits, Relationships, Secret, SecretSeverity, SkillSet, TellSystem,
     ToleranceThreshold, Want, WantKind,
 };
-use crate::bookmark::SelectedBookmark;
 use crate::simulation::modification::Modification;
 use crate::simulation::movement::TilePosition;
 use crate::simulation::time::TickRate;
@@ -916,7 +916,10 @@ mod tests {
 
         // Idempotent re-serialize: bytes must be stable
         let bytes2 = recovered.to_bytes().expect("re-serialize");
-        assert_eq!(bytes, bytes2, "SelectedBookmark roundtrip must be idempotent");
+        assert_eq!(
+            bytes, bytes2,
+            "SelectedBookmark roundtrip must be idempotent"
+        );
     }
 
     #[test]