feat: generation queue admin

routes/admin.js: GET /queue (stats+recent30+stuck), POST /queue/:id/retry, DELETE /queue/stuck
  stuck = processing > 5 min → сбрасываем в failed
  retry = pending + requeue через Bull

src/routes/admin.js

@@ -233,3 +233,96 @@ router.delete('/promos/:id', async (req, res) => {
     res.json({ ok: true });
   } catch (err) { res.status(500).json({ error: err.message }); }
 });
+
+// ── GENERATION QUEUE ─────────────────────────────────────────
+
+// GET /api/admin/queue — статус очереди + последние задачи
+router.get('/queue', async (req, res) => {
+  if (!await requireAdmin(req, res)) return;
+  try {
+    const [stats, recent, stuck] = await Promise.all([
+      // Статистика по статусам
+      query(`
+        SELECT status, count(*)::int as cnt,
+          round(avg(extract(epoch from (updated_at - created_at)))::numeric,1) as avg_sec
+        FROM generation_jobs
+        GROUP BY status ORDER BY cnt DESC
+      `),
+      // Последние 30 задач
+      query(`
+        SELECT j.id, j.type, j.status,
+          left(j.topic,60) as topic,
+          left(j.error,120) as error,
+          j.tokens_in, j.tokens_out,
+          j.created_at, j.updated_at,
+          u.email as user_email,
+          c.name as channel_name
+        FROM generation_jobs j
+        LEFT JOIN users u ON u.id = j.user_id
+        LEFT JOIN channels c ON c.id = j.channel_id
+        ORDER BY j.created_at DESC LIMIT 30
+      `),
+      // Застрявшие (processing > 5 мин)
+      query(`
+        SELECT id, type, topic, created_at, updated_at
+        FROM generation_jobs
+        WHERE status = 'processing'
+          AND updated_at < NOW() - INTERVAL '5 minutes'
+      `),
+    ]);
+
+    res.json({
+      stats: stats.rows,
+      recent: recent.rows,
+      stuck:  stuck.rows,
+    });
+  } catch (err) { res.status(500).json({ error: err.message }); }
+});
+
+// POST /api/admin/queue/:id/retry — перезапустить задачу
+router.post('/queue/:id/retry', async (req, res) => {
+  if (!await requireAdmin(req, res)) return;
+  try {
+    const { rows: [job] } = await query(
+      'SELECT * FROM generation_jobs WHERE id=$1', [req.params.id]
+    );
+    if (!job) return res.status(404).json({ error: 'Job not found' });
+
+    // Сбрасываем в pending
+    await query(`
+      UPDATE generation_jobs
+      SET status='pending', error=NULL, updated_at=NOW()
+      WHERE id=$1
+    `, [req.params.id]);
+
+    // Добавляем в очередь
+    const generationQueue = require('../workers/generation');
+    if (generationQueue?.add) {
+      await generationQueue.add({
+        jobId:    job.id,
+        type:     job.type,
+        topic:    job.topic,
+        channelId: job.channel_id,
+        rubric:   job.rubric,
+        keywords: [],
+        useCritique: true,
+      });
+    }
+
+    res.json({ ok: true, message: `Job ${job.id} requeued` });
+  } catch (err) { res.status(500).json({ error: err.message }); }
+});
+
+// DELETE /api/admin/queue/stuck — сбросить застрявшие processing → failed
+router.delete('/queue/stuck', async (req, res) => {
+  if (!await requireAdmin(req, res)) return;
+  try {
+    const { rows } = await query(`
+      UPDATE generation_jobs
+      SET status='failed', error='Сброшено администратором (stuck)', updated_at=NOW()
+      WHERE status='processing' AND updated_at < NOW() - INTERVAL '5 minutes'
+      RETURNING id
+    `);
+    res.json({ ok: true, cleared: rows.length });
+  } catch (err) { res.status(500).json({ error: err.message }); }
+});