feat(simulation): unprompted disclosure with trait-based filtering (#551, #173)

DisclosureCandidates component with 7 trigger gates, three-layer rate
limiting, and two-stage trait filter (what + how). Cautious/Gossipy/Loyal/
Talkative predicates via TraitModifierConfig. POI component and discovery
system. Implements D-081, D-082 step 2.

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

server/src/npc/mod.rs

@@ -2,6 +2,7 @@
 // Implements D-024: 10-axis NPC model + CombatCapability component
 // Background tier state machines for schedule, mood, relationships, job
 
+pub mod disclosure;
 pub mod generate;
 pub mod interaction;
 pub mod mood;
@@ -9,6 +10,7 @@ pub mod relationships;
 pub mod routine;
 pub mod tell_state;
 pub mod tolerance;
+pub mod trait_modifiers;
 
 use bevy_app::prelude::*;
 use bevy_ecs::prelude::*;
@@ -31,6 +33,8 @@ impl Plugin for NpcPlugin {
             .init_resource::<routine::PreviousDayPhase>()
             .init_resource::<tolerance::ToleranceBreachEventQueue>()
             .init_resource::<routine::RoutineDeviationEventQueue>()
+            .init_resource::<disclosure::DisclosureGlobalRateLimit>()
+            .init_resource::<trait_modifiers::TraitModifierConfig>()
             .add_systems(
                 Update,
                 (
@@ -61,6 +65,11 @@ impl Plugin for NpcPlugin {
                         .after(mood::update_mood)
                         .after(routine::detect_routine_deviation)
                         .before(crate::perception::observer::compute_observer_snapshot),
+                    disclosure::derive_disclosure_candidates
+                        .before(crate::perception::observer::compute_observer_snapshot),
+                    disclosure::process_unprompted_disclosure
+                        .after(disclosure::derive_disclosure_candidates)
+                        .before(crate::perception::observer::compute_observer_snapshot),
                     crate::simulation::dialogue::process_talk_interaction
                         .after(crate::simulation::input::process_player_input),
                     crate::simulation::dialogue::process_walk_away