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/simulation/mod.rs

@@ -7,6 +7,7 @@ use bevy_ecs::schedule::IntoScheduleConfigs;
 pub mod contraband;
 pub mod conversation;
 pub mod dialogue;
+pub mod examine;
 pub mod follow;
 pub mod input;
 pub mod interaction;
@@ -19,7 +20,9 @@ pub mod path_follow;
 pub mod pathfinding;
 pub mod poi;
 pub mod poi_discovery;
+pub mod pressure;
 pub mod rng;
+pub mod save_state;
 pub mod sound;
 pub mod spatial;
 pub mod stance;
@@ -78,6 +81,13 @@ impl Plugin for SimulationPlugin {
                     poi_discovery::discover_pois
                         .after(crate::perception::observer::compute_visibility_geometry)
                         .before(crate::perception::observer::compute_observer_snapshot),
+                    examine::process_examine_interaction
+                        .after(input::process_player_input)
+                        .before(crate::perception::observer::compute_observer_snapshot),
+                    // Character pressure (#248) — reads NPC awareness + relationship graph
+                    pressure::update_character_pressure
+                        .after(crate::npc::awareness::detect_player_awareness)
+                        .before(crate::perception::observer::compute_observer_snapshot),
                     time::advance_tick.after(path_follow::cleanup_path_blocked),
                 ),
             );