refactor(simulation): replace ad-hoc system ordering with TickPhase pipeline (#843)

10-phase linear pipeline: PreInput → Input → Movement → Simulation →
Economy → Storyteller → Snapshot → PostSnapshot → Knowledge → TickAdvance.

Each system assigned to exactly one phase via .in_set(TickPhase::X).
Cross-phase .after()/.before() eliminated — only intra-phase ordering
remains. Prevents schedule cycles by construction.

SimulationPlugin refactored into sub-plugins by domain:
  - InputPlugin (player actions, interactions, dialogue dispatch)
  - MovementPlugin (pathfinding, movement validation, spatial indexing)
  - SocialPlugin (conversations, sound, voice enrichment, follow state)
  - EconomyPlugin (tâtonnement tick, IPC query serving)
  - TimePlugin (chunk streaming, news ticker, tick advancement)

All other plugins (NPC, Knowledge, Perception, Storyteller, Settings,
Bridge) updated to use TickPhase assignments instead of cross-plugin
ordering constraints. BridgePlugin trimmed to bridge I/O concerns only.

Part A of #843. Parts B (multi-threaded executor) and C (background
workers) follow.

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

server/src/perception/mod.rs

@@ -20,21 +20,30 @@ pub struct PerceptionPlugin;
 
 impl Plugin for PerceptionPlugin {
     fn build(&self, app: &mut App) {
+        use crate::tick_phases::TickPhase;
+
         app.init_resource::<interpretation::ObservationEventQueue>()
             .init_resource::<query::VisibilityGeometry>()
             .init_resource::<query::ActivePerceptionMode>()
+            // Simulation: anomaly detection (feeds monologue recognition chain)
             .add_systems(
                 Update,
                 (
-                    anomaly::clear_anomaly_markers.before(anomaly::detect_anomalies),
-                    anomaly::detect_anomalies.before(observation::emit_observation_events),
-                    cognitive_delay::process_cognitive_delay
-                        .after(observation::emit_observation_events)
-                        .before(crate::knowledge::events::process_knowledge_events),
-                    interpretation::generate_observation_events
-                        .after(observation::emit_observation_events)
-                        .before(crate::knowledge::events::process_knowledge_events),
-                ),
+                    anomaly::clear_anomaly_markers,
+                    anomaly::detect_anomalies
+                        .after(anomaly::clear_anomaly_markers),
+                )
+                    .in_set(TickPhase::Simulation),
+            )
+            // Knowledge: cognitive delay + observation interpretation
+            // (runs after PostSnapshot emit_observation_events, feeds process_knowledge_events)
+            .add_systems(
+                Update,
+                (
+                    cognitive_delay::process_cognitive_delay,
+                    interpretation::generate_observation_events,
+                )
+                    .in_set(TickPhase::Knowledge),
             );
         tracing::debug!("PerceptionPlugin initialized");
     }