fix: 修复错误信息、reasoning_content 透传及豆包模型菜单问题

- 修正 Playwright TimeoutError 提示为页面操作超时（非网络问题）
- 新增 CLICK_TIMEOUT 错误归一化处理，标记为 retryable
- buildChatCompletion/buildChatCompletionChunk 支持 reasoningContent 参数
- doubao_text 模型选择菜单增加重试逻辑（最多 3 次），waitFor 超时从 2s 改为 5s

src/backend/adapter/doubao_text.js

@@ -60,18 +60,26 @@ async function generate(context, prompt, imgPaths, modelId, meta = {}) {
             .first();
         let selectorExists = false;
         try {
-            await modelSelectorBtn.waitFor({ state: 'attached', timeout: 1000 });
+            await modelSelectorBtn.waitFor({ state: 'attached', timeout: 5000 });
             selectorExists = true;
         } catch (e) {
             selectorExists = false;
         }
 
         if (selectorExists) {
-            await safeClick(page, modelSelectorBtn, { bias: 'button' });
-            await sleep(300, 500);
-
             const menuItem = page.getByRole('menuitem', { name: modelMenuName });
-            await menuItem.waitFor({ state: 'visible', timeout: 5000 });
+            // 点击模型选择按钮，最多重试 3 次（菜单偶尔不弹出）
+            for (let attempt = 1; attempt <= 3; attempt++) {
+                await sleep(500, 1000);
+                await safeClick(page, modelSelectorBtn, { bias: 'button' });
+                try {
+                    await menuItem.waitFor({ state: 'visible', timeout: 3000 });
+                    break; // 菜单弹出，退出重试
+                } catch {
+                    logger.warn('适配器', `模型菜单未弹出，重试 ${attempt}/3`, meta);
+                    if (attempt === 3) throw new Error('模型选择菜单未弹出');
+                }
+            }
             await safeClick(page, menuItem, { bias: 'button' });
             await sleep(200, 400);
         }

src/backend/utils/error.js

@@ -68,10 +68,15 @@ export function normalizePageError(err, meta = {}) {
         logger.error('适配器', err.message, meta);
         return { error: err.message, code: ADAPTER_ERRORS.TIMEOUT_ERROR, retryable: true };
     }
-    // 兼容原生 TimeoutError (其他地方抛出的)
+    // CLICK_TIMEOUT: safeClick 内部超时
+    if (err.message?.includes('CLICK_TIMEOUT')) {
+        logger.error('适配器', `点击操作超时: ${err.message}`, meta);
+        return { error: err.message, code: ADAPTER_ERRORS.TIMEOUT_ERROR, retryable: true };
+    }
+    // 兼容原生 TimeoutError (Playwright 元素操作超时等)
     if (err.name === 'TimeoutError' || err.message?.includes('Timeout')) {
-        logger.error('适配器', '请求超时', meta);
+        logger.error('适配器', `页面操作超时: ${err.message}`, meta);
-        return { error: '请求超时, 请检查网络或稍后重试', code: ADAPTER_ERRORS.TIMEOUT_ERROR, retryable: true };
+        return { error: '页面操作超时, 页面可能未正常加载或元素未找到', code: ADAPTER_ERRORS.TIMEOUT_ERROR, retryable: true };
     }
     // PAGE_ERROR_DETECTED: waitApiResponse 页面 UI 中检测到的错误关键词
     if (err.message?.startsWith('PAGE_ERROR_DETECTED:')) {

src/server/respond.js

@@ -114,7 +114,6 @@ export function buildChatCompletion(content, modelName, reasoningContent) {
         role: 'assistant',
         content: content
     };
-
     if (reasoningContent) {
         message.reasoning_content = reasoningContent;
     }
@@ -142,7 +141,6 @@ export function buildChatCompletion(content, modelName, reasoningContent) {
  */
 export function buildChatCompletionChunk(content, modelName, finishReason = 'stop', reasoningContent) {
     const delta = { content };
-
     if (reasoningContent) {
         delta.reasoning_content = reasoningContent;
     }