feat(MCN工作台): 移植dsh导入账号功能 + 弹窗按钮/宽度优化 + 分镜技能归入subskill

- 账号列表页新增「导入账号」：两种方式（抖音账号信息/本地文件夹），复用 executeTask 任务链路提交 AI 任务
- 查看改写弹窗：展开源脚本按钮移入 AI脚本 标题右侧（间隔10px），弹窗最大宽度 1400→1600
- 短视频提示词生成 整体移入 短视频脚本创作/V1.0/subskill/mcn-video-prompt（与 mcn-dou-analysis 同构，138 文件 R100 保留历史）
- 工作台 dsh-data/server 若干修复 + 记忆更新

project/短视频脚本创作/V1.0/mcn-work-shop/server.js

@@ -232,6 +232,20 @@ const server = http.createServer((req, res) => {
       return dshOk(200, dsh.listAccounts({ page: qInt('page', 1), pageSize: qInt('pageSize', 20), search: String(q.get('search') || ''), track: String(q.get('track') || ''), type: String(q.get('type') || 'all') }));
     } catch (e) { return sendErr(500, e.message); }
   }
+  if (p === '/api/dsh/account-favorite' && req.method === 'POST') {
+    if (dshGuard()) return;
+    let body = '';
+    req.on('data', (c) => { body += c; if (body.length > 1e6) req.destroy(); });
+    req.on('end', () => {
+      try {
+        const { id, fav } = JSON.parse(body || '{}');
+        if (!id) return sendErr(400, '缺少 id');
+        dsh.setFavorite(id, !!fav);
+        return dshOk(200, { id, favorite: !!fav });
+      } catch (e) { return sendErr(500, e.message); }
+    });
+    return;
+  }
   if (p === '/api/dsh/account-videos') {
     if (dshGuard()) return;
     try {
@@ -320,6 +334,99 @@ const server = http.createServer((req, res) => {
     return;
   }
 
+  // 查询 AI 任务执行状态（供前端轮询恢复按钮）：queued / pending / running / done / error / notfound
+  if (p === '/api/run/status' && req.method === 'GET') {
+    const id = q.get('id');
+    if (!id) return sendErr(400, '缺少 id');
+    try {
+      const { DatabaseSync } = require('node:sqlite');
+      const db = new DatabaseSync(process.env.WORKBUDDY_DB || path.join(os.homedir(), '.workbuddy', 'workbuddy.db'), { readOnly: true });
+      const auto = db.prepare('SELECT status, deleted_at, last_run_at FROM automations WHERE id=?').get(id);
+      if (!auto || auto.deleted_at) { db.close(); return sendJSON(200, { ok: true, id, state: 'notfound' }); }
+      const st = db.prepare('SELECT running, last_error FROM automation_runtime_state WHERE automation_id=?').get(id);
+      const runs = db.prepare("SELECT status FROM automation_runs WHERE automation_id=? ORDER BY created_at DESC LIMIT 1").get(id);
+      db.close();
+      let state = 'queued';
+      if (st && Number(st.running) === 1) state = 'running';
+      else if (runs) {
+        const s = String(runs.status || '').toUpperCase();
+        if (s === 'IN_PROGRESS') state = 'running';
+        else if (s === 'PENDING_REVIEW') state = 'pending';
+        else if (['DONE', 'COMPLETED', 'SUCCESS', 'FINISHED'].includes(s)) state = 'done';
+        else if (['ERROR', 'CANCELLED', 'FAILED', 'INTERRUPTED'].includes(s)) state = 'error';
+        else state = 'pending';
+      }
+      return sendJSON(200, { ok: true, id, state, error: (st && st.last_error) || null });
+    } catch (e) {
+      return sendErr(500, '状态查询失败: ' + e.message);
+    }
+  }
+
+  // ---------- AI 生成选题（Dify chat-messages 即时调用，参考技能 S5 选题方法论） ----------
+  if (p === '/api/ai/topics' && req.method === 'POST') {
+    let body = '';
+    req.on('data', (c) => { body += c; if (body.length > 1e6) req.destroy(); });
+    req.on('end', async () => {
+      try {
+        const { accountName } = JSON.parse(body || '{}');
+        if (!accountName || typeof accountName !== 'string') return sendErr(400, '缺少账号名');
+        // 1) 查账号定位 + 人设摘要（工作台库）
+        let contentText = '', personaText = '';
+        try {
+          const { DatabaseSync } = require('node:sqlite');
+          const db = new DatabaseSync(path.join(ROOT, 'mcn-plugin.db'), { readOnly: true });
+          const acc = db.prepare('SELECT * FROM hot_accounts WHERE account_name=? LIMIT 1').get(accountName);
+          if (acc) {
+            contentText = String(acc.content || '').slice(0, 500);
+            const p = db.prepare('SELECT content_json, summary FROM account_persona WHERE account_id=? ORDER BY id DESC LIMIT 1').get(acc.id);
+            if (p) personaText = String(p.summary || p.content_json || '').slice(0, 500);
+          }
+          db.close();
+        } catch (e) { /* 库不可用不阻塞，仍可生成 */ }
+        // 2) 读 Dify key：环境变量优先，其次技能脚本内置默认
+        let apiKey = process.env.DIFY_MCN_CYLG_KEY || '';
+        if (!apiKey) {
+          const scriptPath = path.join(ROOT, '..', 'scripts', 'MCN_CYLG_API.py');
+          try {
+            const src = fs.readFileSync(scriptPath, 'utf8');
+            const m = src.match(/DEFAULT_CYLG_KEY\s*=\s*"([^"]+)"/);
+            if (m) apiKey = m[1];
+          } catch (e) { /* 脚本不存在则走 env */ }
+        }
+        if (!apiKey) return sendErr(500, '未配置 DIFY_MCN_CYLG_KEY（环境变量或技能脚本内置 KEY）');
+        // 3) 构造选题 query（参考 references/创作流程/5_生成短视频选题.md 方法论）
+        const query = '你是短视频选题策划师，请为达人「' + accountName + '」结合账号设定生成 3 个爆款选题方案。\n\n'
+          + '【达人信息】\n' + (contentText || '（无账号定位信息）') + '\n'
+          + (personaText ? '【人设摘要】\n' + personaText + '\n' : '')
+          + '\n要求：\n'
+          + '1. 选题要跳出账号核心行为框架，但保留账号结构性符号（固定机制/口头禅等）\n'
+          + '2. 每个选题一句话说清主题+切入角度，标注目标体感（如治愈感/爽感/获得感）\n'
+          + '3. 只输出 3 个选题，每行一个，格式：1. 主题（切入角度｜目标体感）\n'
+          + '4. 不要输出其他解释';
+        // 4) 调 Dify chat-messages（blocking 即时返回）
+        const difyUrl = String(process.env.DIFY_URL || 'https://mydify.youmanvideo.com/v1').replace(/\/+$/, '');
+        const ctrl = new AbortController();
+        const timer = setTimeout(() => ctrl.abort(), 100000);
+        let resp;
+        try {
+          resp = await fetch(difyUrl + '/chat-messages', {
+            method: 'POST',
+            headers: { 'Authorization': 'Bearer ' + apiKey, 'Content-Type': 'application/json' },
+            body: JSON.stringify({ inputs: { is_think: '0', is_online: '0', model: process.env.DIFY_MCN_MODEL || 'gemini' }, query, response_mode: 'blocking', user: 'mcn-work-shop' }),
+            signal: ctrl.signal,
+          });
+        } finally { clearTimeout(timer); }
+        const data = await resp.json().catch(() => ({}));
+        if (!resp.ok) return sendErr(502, 'AI 接口错误: ' + (data.message || resp.status));
+        log('AI 选题生成: ' + accountName);
+        return dshOk(200, { topics: data.answer || '' });
+      } catch (e) {
+        return sendErr(500, '选题生成失败: ' + e.message);
+      }
+    });
+    return;
+  }
+
   // ---------- 静态文件 ----------
   let filePath = path.join(PUBLIC_DIR, p === '/' ? 'index.html' : p);
   // 防穿越