feat: make first registered user an admin

api/routes/auth.js

@@ -23,12 +23,16 @@ router.post('/register', async (req, res) => {
         const checkUser = await pgPool.query('SELECT id FROM users WHERE email = $1', [email]);
         if (checkUser.rows.length > 0) return res.status(400).json({ error: 'User already exists' });
 
+        const countQuery = await pgPool.query('SELECT COUNT(*) FROM users');
+        const userCount = parseInt(countQuery.rows[0].count, 10);
+        const assignedRole = userCount === 0 ? 'admin' : 'free_trial';
+
         const salt = await bcrypt.genSalt(10);
         const hash = await bcrypt.hash(password, salt);
 
         const newUser = await pgPool.query(
             'INSERT INTO users (email, password_hash, role) VALUES ($1, $2, $3) RETURNING id, email, role',
-            [email, hash, 'free_trial']
+            [email, hash, assignedRole]
         );
 
         const token = jwt.sign({ id: newUser.rows[0].id, email: newUser.rows[0].email, role: newUser.rows[0].role }, JWT_SECRET, { expiresIn: '14d' });