feat(web): 重构前端UI并支持OpenAI协议

- 添加账号管理详情页（基本信息、提示词、CapCut、参考图标签页）
- 重构资产页面，按项目组分开展示图片/视频
- 聊天界面支持深度思考内容折叠展示、复制、删除消息
- 设置页面支持Agent配置（Anthropic/OpenAI协议）和工具配置
- 后端支持OpenAI兼容协议流式输出和DeepSeek思考模式
- 添加对话置顶/删除功能、数据库迁移、资产清单API
- 添加账号参考图上传/删除、技能配置持久化、连接测试API

web/server/routes/prompts.ts

@@ -1,5 +1,5 @@
 import { Router } from 'express';
-import fs from 'fs';
+import fs from 'fs/promises';
 import path from 'path';
 
 const PROJECT_ROOT = path.resolve(__dirname, '..', '..', '..');
@@ -12,18 +12,21 @@ const PROMPT_FILES: Record<string, string> = {
   video: 'prompts/视频提示词.md',
 };
 
-promptsRouter.get('/:accountId/:type', (req, res) => {
+promptsRouter.get('/:accountId/:type', async (req, res) => {
   const { accountId, type } = req.params;
   const relPath = PROMPT_FILES[type];
   if (!relPath) return res.status(400).json({ error: 'Unknown type: ' + type });
 
   const fullPath = path.join(PROJECT_ROOT, 'accounts', accountId, relPath);
-  if (!fs.existsSync(fullPath)) return res.status(404).json({ error: 'File not found' });
-
-  res.json({ path: relPath, content: fs.readFileSync(fullPath, 'utf-8') });
+  try {
+    const content = await fs.readFile(fullPath, 'utf-8');
+    res.json({ path: relPath, content });
+  } catch {
+    res.status(404).json({ error: 'File not found' });
+  }
 });
 
-promptsRouter.put('/:accountId/:type', (req, res) => {
+promptsRouter.put('/:accountId/:type', async (req, res) => {
   const { accountId, type } = req.params;
   const { content } = req.body;
   const relPath = PROMPT_FILES[type];
@@ -31,9 +34,8 @@ promptsRouter.put('/:accountId/:type', (req, res) => {
 
   const fullPath = path.join(PROJECT_ROOT, 'accounts', accountId, relPath);
   const dir = path.dirname(fullPath);
-  if (!fs.existsSync(dir)) fs.mkdirSync(dir, { recursive: true });
-
-  fs.writeFileSync(fullPath, content, 'utf-8');
+  await fs.mkdir(dir, { recursive: true });
+  await fs.writeFile(fullPath, content, 'utf-8');
   res.json({ ok: true });
 });