feat(simulation): Sprint 18 — 9 server systems

Background tier state machines (#95), NPC vision (#115), player-
awareness behavior (#244), skill system & combat flag (#91), social
propagation (#249), examine mechanic (#242), character pressure
framework (#248), save state data model (#256), tell state wiring
(#337). Protocol version bumped 13→14 for examine_result and
character_pressure snapshot fields.

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

server/src/perception/observer/mod.rs

@@ -19,6 +19,7 @@ use crate::perception::vision_cone::Facing;
 use crate::simulation::contraband::ScanEventBuffer;
 use crate::simulation::conversation::ConversationEventBuffer;
 use crate::simulation::dialogue::DialogueResponseBuffer;
+use crate::simulation::examine::ExamineResultBuffer;
 use crate::simulation::follow::FollowTarget;
 use crate::simulation::interaction::NearbyInteractionBuffer;
 use crate::simulation::inventory::{CarriedBy, InventorySlot, ItemName};
@@ -82,6 +83,7 @@ pub fn compute_observer_snapshot(
             Option<&mut ScanEventBuffer>,
             Option<&mut ConversationEventBuffer>,
             Option<&FollowTarget>,
+            Option<&mut ExamineResultBuffer>,
         ),
         With<PlayerCharacter>,
     >,
@@ -96,6 +98,7 @@ pub fn compute_observer_snapshot(
     inventory_items: Query<(Entity, &CarriedBy, &ItemName, &InventorySlot)>,
     mut buffer: ResMut<SnapshotBuffer>,
     sim_rng: Option<Res<SimRng>>,
+    pressure_query: Query<&crate::simulation::pressure::CharacterPressure, With<PlayerCharacter>>,
 ) {
     let Ok((
         observer_entity,
@@ -112,6 +115,7 @@ pub fn compute_observer_snapshot(
         mut scan_event_buffer_opt,
         mut conversation_buffer_opt,
         follow_target_opt,
+        mut examine_result_buffer_opt,
     )) = observer_query.single_mut()
     else {
         tracing::error!("compute_observer_snapshot: PlayerCharacter query failed");
@@ -193,6 +197,7 @@ pub fn compute_observer_snapshot(
 
     let current_monologue = monologue_buffer.take();
     let dialogue_response = dialogue_response_opt.as_mut().and_then(|buf| buf.take());
+    let examine_result = examine_result_buffer_opt.as_mut().and_then(|buf| buf.take());
     let scan_events = scan_event_buffer_opt
         .as_mut()
         .map(|buf| buf.take())
@@ -290,6 +295,10 @@ pub fn compute_observer_snapshot(
         conversation_events,
         conversation_ended,
         follow_state,
+        examine_result,
+        character_pressure: pressure_query.iter().next().map(|p| {
+            crate::simulation::pressure::CharacterPressureWire::from(p)
+        }),
         sound_events,
         rng_seed: sim_rng.as_deref().map(|r| r.seed()),
     });