Refine NPC interactions and runtime item generation

src/hooks/story/storyGenerationState.ts

@@ -9,6 +9,7 @@ import {
 } from '../../data/functionCatalog';
 import {
   buildInitialNpcState,
+  getPreferredGiftItemId,
   MAX_COMPANIONS,
 } from '../../data/npcInteractions';
 import { incrementGameRuntimeStats } from '../../data/runtimeStats';
@@ -83,10 +84,29 @@ export function resolveNpcInteractionDecision(
         ),
       };
     case NPC_GIFT_FUNCTION.id:
-      return {
-        kind: 'gift_modal',
-        modal: buildNpcGiftModalState(state, encounter, option.actionText),
-      };
+      {
+        const selectedGiftItemId = getPreferredGiftItemId(
+          state.playerInventory,
+          encounter,
+          {
+            worldType: state.worldType,
+            customWorldProfile: state.customWorldProfile,
+          },
+        );
+        if (!selectedGiftItemId) {
+          return { kind: 'none' };
+        }
+
+        return {
+          kind: 'gift_modal',
+          modal: buildNpcGiftModalState(
+            state,
+            encounter,
+            option.actionText,
+            selectedGiftItemId,
+          ),
+        };
+      }
     case NPC_RECRUIT_FUNCTION.id:
       if (shouldNpcRecruitOpenModal(state.companions.length, MAX_COMPANIONS)) {
         return {