feat: initial zeropost-engine structure

- AI service with Anthropic claude-sonnet-4-6
- Bull queue for async generation jobs
- Routes: /api/generate, /api/channels, /api/posts
- PostgreSQL schema: users, channels, posts, generation_jobs
- Supports: post, article, topics generation types

src/routes/generate.js

@@ -0,0 +1,40 @@
+const express = require('express');
+const router = express.Router();
+const { query } = require('../config/db');
+const generationQueue = require('../workers/generation');
+
+// POST /api/generate - create generation job
+router.post('/', async (req, res) => {
+  try {
+    const { type, topic, tone = 'neutral', language = 'ru', channelContext = '', keywords = [], channelId } = req.body;
+
+    if (!type || !topic) return res.status(400).json({ error: 'type and topic are required' });
+    if (!['post', 'article', 'topics'].includes(type)) return res.status(400).json({ error: 'Invalid type' });
+
+    const { rows } = await query(
+      `INSERT INTO generation_jobs (type, channel_id, topic, status) VALUES ($1,$2,$3,'pending') RETURNING id`,
+      [type, channelId || null, topic]
+    );
+    const jobId = rows[0].id;
+
+    await generationQueue.add({ jobId, type, topic, tone, language, channelContext, keywords });
+
+    res.json({ jobId, status: 'pending' });
+  } catch (err) {
+    console.error('[Route] POST /generate', err);
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// GET /api/generate/:id - get job status
+router.get('/:id', async (req, res) => {
+  try {
+    const { rows } = await query(`SELECT * FROM generation_jobs WHERE id=$1`, [req.params.id]);
+    if (!rows.length) return res.status(404).json({ error: 'Job not found' });
+    res.json(rows[0]);
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+module.exports = router;