feat: Kimi k2.5参数适配+AI日志导出完善(20260419_2249)

- Kimi k2.5 强制传参拦截: 当 provider=kimi 且 model 包含 k2.5 时,
  从请求体中 delete temperature/top_p/presence_penalty/frequency_penalty,
  彻底解决 HTTP 400 报错
- 完善导出AI日志: 新增 lastExchangeLog 状态, 记录每次调用的
  完整请求体(requestPayload)、原始响应(responsePayload)、
  错误详情(errorDetail含status/statusText/responseText)、模型配置
- 更新导出按钮 JSON 结构, 包含 lastExchange 字段

src/pages/ReportEditor.tsx

@@ -73,6 +73,13 @@ export default function ReportEditor() {
   ]);
   const [isEditingPrompts, setIsEditingPrompts] = useState(false);
   const [diffModal, setDiffModal] = useState<{isOpen: boolean, originalHtml: string, newHtml: string, targetId: string} | null>(null);
+  const [lastExchangeLog, setLastExchangeLog] = useState<{
+    startTime: string;
+    modelConfig: { provider: string; endpoint: string; modelName: string };
+    requestPayload: any;
+    responsePayload: any | null;
+    errorDetail: { status: number; statusText: string; responseText: string; message: string } | null;
+  } | null>(null);
 
   useEffect(() => {
     stateRef.current.chatMessages = chatMessages;
@@ -945,23 +952,50 @@ export default function ReportEditor() {
       const systemPrompt = aiModifyEnabled
         ? '你是一名专业的外科医生助理。当前处于【修改模式】。\n我为你提供了当前手术报告的【全局参考内容】作为背景知识，以及你需要修改的【目标区域 HTML 源码】。\n请根据用户的【医生指令】，直接重写并输出目标区域的 HTML。\n\n重要指令：\n1. 必须返回合法的 JSON 对象\n2. 必须包含 "reply"（简短回复）和 "updatedHtml"（修改后的完整 HTML 代码）两个字段\n3. 【内容边界】：全局参考内容仅供你理解上下文。你的 updatedHtml 只能包含目标区域本身的内容（例如：如果目标区域是"手术步骤"，你就只写步骤）。严禁输出签名、落款、术后总结等属于报告其他部分的结构！\n4. 段落必须使用 <p> 标签包裹，段落间绝对不要使用 <br> 标签，也不要使用换行符 (\\n)\n5. 输出的 HTML 必须紧凑，标签之间不要有空格或换行\n6. 绝对不要包含任何 Markdown 标记（如 ```json）'
         : '你是一名专业的外科医生助理。当前处于【对话模式】。\n请仔细阅读我提供的【全局手术报告参考内容】，并根据【医生指令】进行专业解答。\n重要指令：\n1. 必须返回合法的 JSON 对象\n2. 仅包含 "reply"（你的专业回答）一个字段\n3. 不要返回任何 HTML 代码\n4. 绝对不要包含任何 Markdown 标记';
+      const payload: any = {
+        model: modelName,
+        messages: [
+          { role: 'system', content: systemPrompt },
+          { role: 'user', content: messageContent }
+        ],
+        temperature: 0.3
+      };
+      const isKimiK25 = settings.activeAiProvider === 'kimi' && /k2\.5/i.test(modelName);
+      if (isKimiK25) {
+        delete payload.temperature;
+        delete payload.top_p;
+        delete payload.presence_penalty;
+        delete payload.frequency_penalty;
+      }
+      const logEntry = {
+        startTime: new Date().toISOString(),
+        modelConfig: { provider: settings.activeAiProvider || 'kimi', endpoint: apiEndpoint, modelName },
+        requestPayload: JSON.parse(JSON.stringify(payload)),
+        responsePayload: null as any | null,
+        errorDetail: null as { status: number; statusText: string; responseText: string; message: string } | null
+      };
       const response = await fetch(`${apiEndpoint}/chat/completions`, {
         method: 'POST',
         headers: {
           'Content-Type': 'application/json',
           'Authorization': `Bearer ${apiKey}`
         },
-        body: JSON.stringify({
-          model: modelName,
-          messages: [
-            { role: 'system', content: systemPrompt },
-            { role: 'user', content: messageContent }
-          ],
-          temperature: 0.3
-        })
+        body: JSON.stringify(payload)
       });
-      if (!response.ok) throw new Error(`API 请求失败: ${response.status}`);
+      if (!response.ok) {
+        const errorText = await response.text().catch(() => '');
+        logEntry.errorDetail = {
+          status: response.status,
+          statusText: response.statusText,
+          responseText: errorText,
+          message: `API 请求失败: ${response.status}`
+        };
+        setLastExchangeLog(logEntry);
+        throw new Error(`API 请求失败: ${response.status}${errorText ? ' - ' + errorText : ''}`);
+      }
       const data = await response.json();
+      logEntry.responsePayload = data;
+      setLastExchangeLog(logEntry);
       const responseText = data.choices[0].message.content.trim();
       const cleanedText = responseText.replace(/```json\n?|```/g, '');
       let responseJson: any = {};
@@ -2386,6 +2420,7 @@ export default function ReportEditor() {
                           exportAt: new Date().toISOString(),
                           url: window.location.href,
                           messages: chatMessages,
+                          lastExchange: lastExchangeLog,
                           metadata: {
                             user: currentUser?.username || 'anonymous',
                             activeProvider: (() => { const s = storage.get<SystemSettings>('systemSettings', {} as SystemSettings); return s.activeAiProvider || 'kimi'; })(),