backend first draft

backend/routes/folders.js

@@ -0,0 +1,29 @@
+const express = require('express');
+const router = express.Router();
+const db = require('../db');
+
+router.get('/', (req, res) => {
+  const folders = db.prepare('SELECT * FROM folders ORDER BY sort_order, name').all();
+  res.json(folders);
+});
+
+router.post('/', (req, res) => {
+  const { name } = req.body;
+  if (!name || !name.trim()) return res.status(400).json({ error: 'Name is required' });
+  const info = db.prepare('INSERT INTO folders (name) VALUES (?)').run(name.trim());
+  const folder = db.prepare('SELECT * FROM folders WHERE id = ?').get(info.lastInsertRowid);
+  res.status(201).json(folder);
+});
+
+router.put('/:id', (req, res) => {
+  const { name } = req.body;
+  db.prepare('UPDATE folders SET name = ? WHERE id = ?').run(name, req.params.id);
+  res.json(db.prepare('SELECT * FROM folders WHERE id = ?').get(req.params.id));
+});
+
+router.delete('/:id', (req, res) => {
+  db.prepare('DELETE FROM folders WHERE id = ?').run(req.params.id);
+  res.status(204).end();
+});
+
+module.exports = router;