fix(simulation): address PR #26 review comments (13 items)

Warnings fixed:
- Add WalkAway to all_player_action_variants_roundtrip test
- Warn and skip on unresolvable speaker_entity_id (was silent 0)
- Change MonologueState.shown_ids from Vec to HashSet (O(1) lookup)
- Add cross-plugin ordering: trigger_recognition_monologue after
  detect_anomalies (latent determinism bug)
- Add TODO for unreachable Secret trust tier

Suggestions addressed:
- Server-side range check for Talk verb in handle_talk (CLOSE_RANGE)
- Emit IncompleteInteraction before overwriting ActiveDialogue
- Add different_seed_produces_different_replay determinism test
- Replace panic with assert for unknown fixture naming convention
- Fix duplicate "Observe" label: ExamineNpc now uses "Examine NPC"
- Change DialogueCooldownTracker.used from Vec to BTreeMap (D-041)
- Add .after(process_talk_interaction) to process_walk_away ordering
- Collapse dead conditional in main.rs (both branches identical)

468 tests pass, 0 failures.

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

server/src/simulation/input.rs

@@ -90,6 +90,7 @@ pub fn process_player_input(
         With<PlayerCharacter>,
     >,
     inventory_items: Query<(Entity, &CarriedBy, &ItemName, &InventorySlot)>,
+    all_positions: Query<&TilePosition>,
 ) {
     let current_tick = time.tick;
     let paused = time.paused();
@@ -189,7 +190,7 @@ pub fn process_player_input(
                     handle_place(&mut commands, &registry, &player_query, target_entity_id);
                 }
                 Some("Talk") => {
-                    handle_talk(&mut commands, &registry, &player_query, target_entity_id);
+                    handle_talk(&mut commands, &registry, &player_query, &all_positions, target_entity_id);
                 }
                 _ => {
                     tracing::info!(
@@ -328,6 +329,7 @@ fn handle_take(
 
 /// Handle Talk verb: set TalkRequest marker on the player entity for the target NPC.
 /// The actual dialogue pipeline runs in process_talk_interaction (dialogue.rs).
+/// Server-side range check: Talk requires CLOSE_RANGE (same as interaction system).
 #[allow(clippy::type_complexity)]
 fn handle_talk(
     commands: &mut Commands,
@@ -341,6 +343,7 @@ fn handle_talk(
         ),
         With<PlayerCharacter>,
     >,
+    all_positions: &Query<&TilePosition>,
     target_entity_id: Option<u64>,
 ) {
     let Some(target_id) = target_entity_id else {
@@ -348,7 +351,7 @@ fn handle_talk(
         return;
     };
 
-    let Ok((player_entity, _, _, _)) = player_query.single() else {
+    let Ok((player_entity, player_pos, _, _)) = player_query.single() else {
         return;
     };
 
@@ -358,6 +361,20 @@ fn handle_talk(
         return;
     };
 
+    // Server-side range check: reject Talk if target is beyond close range
+    if let Ok(target_pos) = all_positions.get(target_entity) {
+        let distance = player_pos.manhattan_distance(target_pos).unwrap_or(u32::MAX);
+        if distance > crate::simulation::interaction::CLOSE_RANGE {
+            tracing::info!(
+                target_id,
+                distance,
+                "Talk: target out of range (max {})",
+                crate::simulation::interaction::CLOSE_RANGE,
+            );
+            return;
+        }
+    }
+
     commands
         .entity(player_entity)
         .insert(crate::simulation::dialogue::TalkRequest {