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/assets.ts

@@ -1,7 +1,8 @@
 import { Router } from 'express';
 import { getDb } from '../db';
 import { randomUUID } from 'crypto';
-import fs from 'fs';
+import fs from 'fs/promises';
+import fss from 'fs';
 import path from 'path';
 import { fileURLToPath } from 'url';
 
@@ -25,8 +26,23 @@ assetsRouter.get('/', (req, res) => {
   res.json(rows);
 });
 
+// List manifests with metadata
+assetsRouter.get('/manifests', async (_req, res) => {
+  const rows = getDb().prepare(`
+    SELECT manifest_path, account_id,
+           COUNT(*) as asset_count,
+           SUM(CASE WHEN type = 'image' THEN 1 ELSE 0 END) as image_count,
+           SUM(CASE WHEN type = 'video' THEN 1 ELSE 0 END) as video_count,
+           MAX(created_at) as latest_at
+    FROM assets
+    GROUP BY manifest_path
+    ORDER BY latest_at DESC
+  `).all();
+  res.json(rows);
+});
+
 // Delete asset and its file
-assetsRouter.delete('/:id', (req, res) => {
+assetsRouter.delete('/:id', async (req, res) => {
   const asset = getDb().prepare('SELECT * FROM assets WHERE id = ?').get(req.params.id) as {
     file_path: string;
   } | undefined;
@@ -34,36 +50,38 @@ assetsRouter.delete('/:id', (req, res) => {
   if (!asset) return res.status(404).json({ error: 'Asset not found' });
 
   const filePath = path.join(PROJECT_ROOT, asset.file_path);
-  if (fs.existsSync(filePath)) fs.unlinkSync(filePath);
+  try { await fs.unlink(filePath); } catch { /* ignore */ }
 
   getDb().prepare('DELETE FROM assets WHERE id = ?').run(req.params.id);
   res.status(204).send();
 });
 
 // Scan output directories and index assets
-assetsRouter.post('/scan', (_req, res) => {
+assetsRouter.post('/scan', async (_req, res) => {
   const outputDir = path.join(PROJECT_ROOT, 'output');
-  if (!fs.existsSync(outputDir)) return res.json({ indexed: 0 });
+  try {
+    await fs.access(outputDir);
+  } catch {
+    return res.json({ indexed: 0 });
+  }
 
-  const dirs = fs.readdirSync(outputDir, { withFileTypes: true })
-    .filter((d) => d.isDirectory());
+  const dirs = await fs.readdir(outputDir, { withFileTypes: true });
+  const dirEntries = dirs.filter((d) => d.isDirectory());
 
   let indexed = 0;
-  for (const dir of dirs) {
+  for (const dir of dirEntries) {
     const manifestPath = path.join(outputDir, dir.name, 'manifest.json');
-    if (!fs.existsSync(manifestPath)) continue;
-
     let manifest;
     try {
-      manifest = JSON.parse(fs.readFileSync(manifestPath, 'utf-8'));
+      manifest = JSON.parse(await fs.readFile(manifestPath, 'utf-8'));
     } catch { continue; }
 
     const accountId = manifest.account?.id || '';
 
     // Scan images
     const imagesDir = path.join(outputDir, dir.name, 'images');
-    if (fs.existsSync(imagesDir)) {
-      const files = fs.readdirSync(imagesDir);
+    try {
+      const files = await fs.readdir(imagesDir);
       for (const file of files) {
         if (!/\.(jpe?g|png|webp)$/i.test(file)) continue;
         const id = randomUUID();
@@ -79,12 +97,12 @@ assetsRouter.post('/scan', (_req, res) => {
         ).run(id, accountId, path.relative(PROJECT_ROOT, manifestPath), 'image', relPath, shotIndex);
         indexed++;
       }
-    }
+    } catch { /* images dir may not exist */ }
 
     // Scan videos
     const videosDir = path.join(outputDir, dir.name, 'videos');
-    if (fs.existsSync(videosDir)) {
-      const files = fs.readdirSync(videosDir);
+    try {
+      const files = await fs.readdir(videosDir);
       for (const file of files) {
         if (!/\.mp4$/i.test(file)) continue;
         const id = randomUUID();
@@ -100,7 +118,7 @@ assetsRouter.post('/scan', (_req, res) => {
         ).run(id, accountId, path.relative(PROJECT_ROOT, manifestPath), 'video', relPath, shotIndex);
         indexed++;
       }
-    }
+    } catch { /* videos dir may not exist */ }
   }
 
   res.json({ indexed });
@@ -112,6 +130,6 @@ assetsRouter.get('/file', (req, res) => {
   if (!filePath) return res.status(400).send('Missing path');
   const fullPath = path.resolve(PROJECT_ROOT, filePath);
   if (!fullPath.startsWith(PROJECT_ROOT)) return res.status(403).send('Forbidden');
-  if (!fs.existsSync(fullPath)) return res.status(404).send('Not found');
+  if (!fss.existsSync(fullPath)) return res.status(404).send('Not found');
   res.sendFile(fullPath);
 });