feat: Round 52 narrative systems improvements

P1-A: QuestManager.OnLoad Enum.TryParse failure warning (dev builds)
P1-B: SaveData.QuestState ObjectiveCompleted dict; BuildObjectiveCompleted
       helper; OnSave/OnLoad wiring (DataVersion 2→3)
P2-A: Quest start/complete timestamps (_startedAtUtc/_completedAtUtc dicts;
       StartedAtUtc/CompletedAtUtc in SaveData; AcceptQuest/CompleteQuest/
       OnSave/OnLoad wiring)
P2-B: DialogueManager pending queue Queue→List + priority-eviction on full
       (lowest-priority item evicted when higher-priority request arrives)
P2-C: NpcSO.localizationTable field; NpcSOEditor uses npc.localizationTable
       in TryResolveNameKey, PingLocalizationFile, and button label
P3-A: QuestSO.failConditions[] multi-fail array; Obsolete failCondition;
       DispatchEvent updates fail check to any-of-array logic with fallback
P3-B: QuestObjectiveSO.prerequisiteObjectiveId; DispatchEvent gates objective
       event routing behind prerequisite completed check
P3-C: IQuestEventPayload interface + StringQuestPayload struct; QuestObjectiveSO
       typed TryHandleEvent(IQuestEventPayload) overload; DispatchEvent string
       overload delegates to typed IQuestEventPayload overload

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

Assets/_Game/Scripts/Core/Save/SaveData.cs

@@ -138,13 +138,23 @@ namespace BaseGames.Core.Save
         /// 此 QuestState 数据格式版本号。
         ///   1 = 原始格式（ProgressCounts 按索引，已弃用）
         ///   2 = Round 24+ 格式（ObjectiveProgress 按 objectiveId 键值对）
+        ///   3 = Round 52+ 格式（新增 ObjectiveCompleted、StartedAtUtc、CompletedAtUtc）
         /// OnLoad 按此字段显式选择解析路径，杜绝依赖 Count > 0 的隐式推断。
         /// </summary>
-        public int         DataVersion       = 2;
-        public string      Status;         // "Unavailable"|"Available"|"Active"|"Paused"|"Completed"|"Failed"
+        public int         DataVersion       = 3;
+        /// <summary>任务运行时状态字符串。有效值：Unavailable|Available|Active|Paused|Completed|Failed。
+        /// OnLoad 通过 Enum.TryParse 解析；无效值将触发开发模式警告并降级为 Unavailable。</summary>
+        public string      Status;
         public int         ObjectiveIndex;
-        /// <summary>新格式（Round 24+，DataVersion=2）：objectiveId → progressCount，重排目标顺序后存档不会错位。</summary>
+        /// <summary>新格式（DataVersion≥2）：objectiveId → progressCount，重排目标顺序后存档不会错位。</summary>
         public Dictionary<string, int> ObjectiveProgress = new();
+        /// <summary>各目标是否已判定完成（objectiveId → completed）。
+        /// 防止 GetRequiredCount 在版本迭代中变更后，重新计算结果与存档实际状态不一致。DataVersion≥3 写入。</summary>
+        public Dictionary<string, bool> ObjectiveCompleted = new();
+        /// <summary>任务接取时间（Unix 秒时间戳，UTC）。0 = 未记录（旧存档）。DataVersion≥3 写入。</summary>
+        public long        StartedAtUtc;
+        /// <summary>任务完成时间（Unix 秒时间戳，UTC）。0 = 未完成或未记录。DataVersion≥3 写入。</summary>
+        public long        CompletedAtUtc;
         /// <summary>旧格式（按数组索引，DataVersion=1）：仅用于迁移旧版存档，新存档不再写入。已弃用，将在后续版本移除。</summary>
         [System.Obsolete("旧格式存档兼容字段，仅供 OnLoad DataVersion=1 迁移使用。新存档改用 ObjectiveProgress（objectiveId 键值对）。")]
         public List<int>   ProgressCounts = new();