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/Dialogue/DialogueManager.cs

@@ -65,6 +65,10 @@ namespace BaseGames.Dialogue
         /// </summary>
         private int  _playbackId;
 
+        // ── 一次性对话完成回调 ────────────────────────────────────────────────
+        // 通过 StartDialogue(..., onComplete) 注册；OnDialogueEnded 触发后调用一次后清空。
+        private System.Action _onCompleteCallback;
+
         // ── 子协程通信字段（避免协程间 ref/out 参数）─────────────────────────
         /// <summary>HandleChoices 子协程写入结果：玩家选中选项后的后续序列（null = 无后续）。</summary>
         private DialogueSequenceSO _choiceBranchResult;
@@ -186,6 +190,17 @@ namespace BaseGames.Dialogue
             PlayImmediate(sequence, npcId, priority);
         }
 
+        /// <inheritdoc cref="IDialogueService.StartDialogue(DialogueSequenceSO,string,int,System.Action)"/>
+        public void StartDialogue(DialogueSequenceSO sequence, string npcId, int priority, System.Action onComplete)
+        {
+            if (onComplete != null)
+            {
+                // 若已有待回调，链式追加（不覆盖），保证先来先到
+                _onCompleteCallback += onComplete;
+            }
+            StartDialogue(sequence, npcId, priority);
+        }
+
         private void PlayImmediate(DialogueSequenceSO sequence, string npcId, int priority = 0)
         {
             IsDialogueActive  = true;
@@ -239,6 +254,11 @@ namespace BaseGames.Dialogue
             _onDialogueEnded?.Raise();
             if (_onDialogueEnded == null) _inputReader?.EnableGameplayInput();
             OnDialogueEnded?.Invoke();
+
+            // 触发一次性完成回调（正常结束和强制中断均触发）
+            var cb = _onCompleteCallback;
+            _onCompleteCallback = null;
+            cb?.Invoke();
         }
 
         // ── 输入回调 ──────────────────────────────────────────────────────