已把工具调用从 XML 改成 OpenAI 兼容 JSON，并统一解析/执行流程。改动概览如下：

新增 JSON tool_calls 解析/序列化并替换核心执行与提示词为 JSON-only：JsonToolCallParser.cs、AIIntelligenceCore.cs
工具基类移除 XML 解析，统一 JSON 参数读取与类型转换辅助：AITool.cs
工具实现统一 JSON args/UsageSchema（含重写/修复）：Tool_ModifyGoodwill.cs、Tool_SendReinforcement.cs、Tool_GetMapPawns.cs、Tool_GetMapResources.cs、Tool_GetAvailablePrefabs.cs、Tool_CallPrefabAirdrop.cs、Tool_CallBombardment.cs、Tool_GetAvailableBombardments.cs、Tool_GetPawnStatus.cs、Tool_GetRecentNotifications.cs、Tool_SearchThingDef.cs、Tool_SearchPawnKind.cs、Tool_ChangeExpression.cs、Tool_SetOverwatchMode.cs、Tool_RememberFact.cs、Tool_RecallMemories.cs、Tool_SpawnResources.cs、Tool_AnalyzeScreen.cs
轰炸相关解析统一到 JSON 字典并增强数值解析：BombardmentUtility.cs
UI 对话展示改为剥离 JSON tool_calls：Overlay_WulaLink.cs、Dialog_AIConversation.cs

Source/WulaFallenEmpire/EventSystem/AI/Tools/Tool_ModifyGoodwill.cs

@@ -8,32 +8,21 @@ namespace WulaFallenEmpire.EventSystem.AI.Tools
     {
         public override string Name => "modify_goodwill";
         public override string Description => "Adjusts YOUR internal opinion of the player (AI Goodwill). WARNING: This DOES NOT affect Faction Relations or stop raids. It is purely personal. Do NOT use this to try to stop enemies.";
-        public override string UsageSchema => "<modify_goodwill><amount>integer</amount></modify_goodwill>";
+        public override string UsageSchema => "{\"amount\": 1}";
 
         public override string Execute(string args)
         {
             try
             {
-                var parsedArgs = ParseXmlArgs(args);
+                var parsedArgs = ParseJsonArgs(args);
                 int amount = 0;
 
-                if (parsedArgs.TryGetValue("amount", out string amountStr))
-                {
-                    if (!int.TryParse(amountStr, out amount))
-                    {
-                        return $"Error: Invalid amount '{amountStr}'. Must be an integer.";
-                    }
-                }
-                else
+                if (!TryGetInt(parsedArgs, "amount", out amount))
                 {
                     // Fallback for simple number string
-                    if (int.TryParse(args.Trim(), out int val))
+                    if (!int.TryParse(args?.Trim(), out amount))
                     {
-                        amount = val;
-                    }
-                    else
-                    {
-                        return "Error: Missing <amount> parameter.";
+                        return "Error: Missing 'amount' parameter.";
                     }
                 }
 
@@ -60,4 +49,4 @@ namespace WulaFallenEmpire.EventSystem.AI.Tools
             }
         }
     }
-}
+}