feat: PostgreSQL 17 вместо SQLite

pg + connect-pg-simple, async routes, docker-compose, скрипт setup-postgres.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/middleware/auth.js

@@ -1,3 +1,6 @@
+const { query } = require('../db');
+const { asyncHandler } = require('../utils/asyncHandler');
+
 function requireAuth(req, res, next) {
   if (!req.session.userId) {
     const nextUrl = encodeURIComponent(req.originalUrl);
@@ -6,17 +9,17 @@ function requireAuth(req, res, next) {
   next();
 }
 
-function loadUser(req, res, next) {
+const loadUser = asyncHandler(async (req, res, next) => {
   if (req.session.userId) {
-    const { db } = require('../db');
-    const user = db
-      .prepare('SELECT id, email, name FROM users WHERE id = ?')
-      .get(req.session.userId);
-    res.locals.user = user || null;
+    const { rows } = await query(
+      'SELECT id, email, name FROM users WHERE id = $1',
+      [req.session.userId]
+    );
+    res.locals.user = rows[0] || null;
   } else {
     res.locals.user = null;
   }
   next();
-}
+});
 
 module.exports = { requireAuth, loadUser };