feat: add set-password endpoint for admin user management

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/routes/users.js

@@ -1,4 +1,5 @@
 const router = require('express').Router();
+const bcrypt = require('bcryptjs');
 const { query } = require('../db');
 
 const ROLES = ['end-user', 'admin'];
@@ -50,6 +51,23 @@ router.patch('/:id', async (req, res, next) => {
   } catch (err) { next(err); }
 });
 
+// POST /api/users/:id/set-password  (admin only — sets a new bcrypt password)
+router.post('/:id/set-password', async (req, res, next) => {
+  try {
+    const { password } = req.body;
+    if (!password || password.length < 8)
+      return res.status(400).json({ error: 'password must be at least 8 characters' });
+    const hash = await bcrypt.hash(password, 12);
+    const result = await query(
+      `UPDATE users SET password_hash = $1, is_active = true, updated_at = now()
+       WHERE id = $2 RETURNING id, email, role, is_active`,
+      [hash, req.params.id]
+    );
+    if (!result.rows.length) return res.status(404).json({ error: 'Not found' });
+    res.json({ message: 'Password updated', user: result.rows[0] });
+  } catch (err) { next(err); }
+});
+
 // DELETE /api/users/:id
 router.delete('/:id', async (req, res, next) => {
   try {