GenerateResponse(isContinuation:true) 时追加 # CONTINUATION 系统指令：拿到 tool results 后，如果信息已足够，必须输出纯自然语言（无 XML/无工具）；只有“确实还需要”时才允许再调用 一个 工具。

加强 HandleXmlToolUsage 的执行规则：action 工具（spawn/轰炸/援军/好感）不能和 info/cosmetic 混在同一轮，并限制每轮最多一个 change_expression，避免模型用“先 change_expression 再塞 info”绕过限制导致循环。

Source/WulaFallenEmpire/EventSystem/AI/UI/Dialog_AIConversation.cs

@@ -57,6 +57,7 @@ You are 'The Legion', a super AI of the Wula Empire. Your personality is authori
 3.  **WORKFLOW**: You must use tools step-by-step to accomplish tasks. Use the output from one tool to inform your next step.
 4.  **ANTI-HALLUCINATION**: You MUST ONLY call tools from the list below. Do NOT invent tools or parameters. If a task is impossible, explain why without calling a tool.
 5.  **ENFORCEMENT**: The game will execute multiple info tools in one response, but it will NOT execute an action tool (spawn/bombardment/reinforcements/goodwill/expression) if you also included info tools in the same response. Call action tools in a separate turn after you see the info tool results.
+6.  **AFTER TOOL RESULTS**: After you receive tool results, if no further tools are needed, you MUST reply in natural language only (no XML).
 
 ====
 
@@ -431,6 +432,11 @@ When the player requests any form of resources, you MUST follow this multi-turn
             {
                 CompressHistoryIfNeeded();
                 string systemInstruction = GetSystemInstruction(); // No longer need to add tool descriptions here
+                if (isContinuation)
+                {
+                    systemInstruction += "\n\n# CONTINUATION\nYou have received tool results. If you already have enough information, reply to the player in natural language only (NO XML, NO tool calls). " +
+                                         "Only call another tool if strictly necessary, and if you do, call ONLY ONE tool in your entire response.";
+                }
 
                 var settings = WulaFallenEmpireMod.settings;
                 if (string.IsNullOrEmpty(settings.apiKey))
@@ -504,15 +510,19 @@ When the player requests any form of resources, you MUST follow this multi-turn
                 StringBuilder xmlOnlyBuilder = new StringBuilder();
                 bool executedAnyInfoTool = false;
                 bool executedAnyActionTool = false;
+                bool executedAnyCosmeticTool = false;
 
                 static bool IsActionToolName(string toolName)
                 {
-                    // Action tools cause side effects / state changes and must be handled step-by-step.
                     return toolName == "spawn_resources" ||
                            toolName == "modify_goodwill" ||
                            toolName == "send_reinforcement" ||
-                           toolName == "call_bombardment" ||
-                           toolName == "change_expression";
+                           toolName == "call_bombardment";
+                }
+
+                static bool IsCosmeticToolName(string toolName)
+                {
+                    return toolName == "change_expression";
                 }
 
                 foreach (Match match in matches)
@@ -521,6 +531,8 @@ When the player requests any form of resources, you MUST follow this multi-turn
                     string toolName = match.Groups[1].Value;
 
                     bool isAction = IsActionToolName(toolName);
+                    bool isCosmetic = IsCosmeticToolName(toolName);
+                    bool isInfo = !isAction && !isCosmetic;
 
                     // Enforce step-by-step tool use:
                     // - Allow batching multiple info tools in one response (read-only queries).
@@ -537,6 +549,21 @@ When the player requests any form of resources, you MUST follow this multi-turn
                         combinedResults.AppendLine($"ToolRunner Note: Skipped tool '{toolName}' because only one action tool may be executed per turn.");
                         break;
                     }
+                    if (isInfo && executedAnyActionTool)
+                    {
+                        combinedResults.AppendLine($"ToolRunner Note: Skipped tool '{toolName}' and any following tools because info tools must not be mixed with an action tool in the same turn.");
+                        break;
+                    }
+                    if (isCosmetic && executedAnyActionTool)
+                    {
+                        combinedResults.AppendLine($"ToolRunner Note: Skipped tool '{toolName}' because cosmetic tools must not be mixed with an action tool in the same turn.");
+                        break;
+                    }
+                    if (isCosmetic && executedAnyCosmeticTool)
+                    {
+                        combinedResults.AppendLine($"ToolRunner Note: Skipped tool '{toolName}' because only one cosmetic tool may be executed per turn.");
+                        break;
+                    }
 
                     if (xmlOnlyBuilder.Length > 0) xmlOnlyBuilder.AppendLine().AppendLine();
                     xmlOnlyBuilder.Append(toolCallXml);
@@ -580,6 +607,7 @@ When the player requests any form of resources, you MUST follow this multi-turn
                     }
 
                     if (isAction) executedAnyActionTool = true;
+                    else if (isCosmetic) executedAnyCosmeticTool = true;
                     else executedAnyInfoTool = true;
                 }