feat: Round 50 narrative systems improvements

IQuestManager+QuestManager: add FillQuestsInState/FillFilterQuests buffer overloads (no-alloc hot path); remove R49 duplicate implementations.

QuestGiver: cache current quest result (_cachedQuest/_cachedState/_cacheDirty) to avoid per-frame foreach in InteractPrompt; invalidate on OnEnable and Interact_Internal state changes.

IDialogueService+DialogueManager: add StartDialogue(..., Action onComplete) overload; callback fires once on ForceEnd (covers both normal end and interrupt); supports chained callbacks via += accumulation.

DialogueVariantPreviewWindow: add 'Copy CSV' button in matrix section; exports all 2^N flag combinations with winner column; handles N>10 guard and CSV-safe escaping.

WorldStateRegistry: add TryGetCategory(id, out category) reverse lookup for debug tools.

NpcSOEditor: new CustomEditor for NpcSO showing live nameKey localization preview in Inspector (green label or warning box if Key not found).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Assets/_Game/Scripts/Quest/IQuestManager.cs

@@ -131,6 +131,18 @@ namespace BaseGames.Quest
         /// 适用于自定义筛选（如"活跃且含 NPC 亲密度门槛"）等场景。
         /// </summary>
         System.Collections.Generic.IReadOnlyList<string> FilterQuests(System.Func<string, QuestStateEnum, bool> predicate);
+
+        /// <summary>
+        /// 将当前处于指定状态的所有任务 ID 填入调用方提供的列表（先 Clear 再添加）。
+        /// 相比 <see cref="GetQuestsInState"/> 不分配新列表，适合高频调用（如每帧刷新 HUD）。
+        /// </summary>
+        void FillQuestsInState(QuestStateEnum state, System.Collections.Generic.List<string> result);
+
+        /// <summary>
+        /// 将满足谓词的所有任务 ID 填入调用方提供的列表（先 Clear 再添加）。
+        /// 相比 <see cref="FilterQuests"/> 不分配新列表，适合高频调用场景。
+        /// </summary>
+        void FillFilterQuests(System.Func<string, QuestStateEnum, bool> predicate, System.Collections.Generic.List<string> result);
     }
 
     /// <summary>