fix: 修复 Gemini 图片无法上传问题

lib/backend/adapter/gemini.js

@@ -2,7 +2,7 @@ import { initBrowserBase } from '../../browser/launcher.js';
 import {
     sleep,
     safeClick,
-    pasteImages
+    uploadFilesViaChooser
 } from '../../browser/utils.js';
 import {
     fillPrompt,
@@ -58,23 +58,22 @@ async function generateImage(context, prompt, imgPaths, modelId, meta = {}) {
         await inputLocator.waitFor({ timeout: 30000 });
         await sleep(1500, 2500);
 
-        // 2. 上传图片
+        // 2. 上传图片 (使用 filechooser 事件，因为 Firefox 不会创建 DOM input 元素)
         if (imgPaths && imgPaths.length > 0) {
-            const expectedUploads = imgPaths.length;
-            let uploadedCount = 0;
+            // 点击加号按钮打开菜单
+            logger.debug('适配器', '点击加号按钮...', meta);
+            const uploadMenuBtn = page.getByRole('button', { name: 'Open upload file menu' });
+            await safeClick(page, uploadMenuBtn, { bias: 'button' });
+            await sleep(500, 1000);
 
-            await pasteImages(page, inputLocator, imgPaths, {
+            // 使用公共函数上传文件
+            const uploadFilesBtn = page.getByRole('button', { name: /Upload files/ });
+            await uploadFilesViaChooser(page, uploadFilesBtn, imgPaths, {
                 uploadValidator: (response) => {
                     const url = response.url();
-                    // 检测上传成功：google.com/upload/?upload_id= 的 POST 请求
-                    if (response.status() === 200 &&
+                    return response.status() === 200 &&
                         url.includes('google.com/upload/') &&
-                        url.includes('upload_id=')) {
-                        uploadedCount++;
-                        logger.info('适配器', `图片上传进度: ${uploadedCount}/${expectedUploads}`, meta);
-                        return uploadedCount >= expectedUploads;
-                    }
-                    return false;
+                        url.includes('upload_id=');
                 }
             });