Add internal staff IAM: named users, roles, and management permissions.

verae-staff-iam (:3028) is the people directory — owner, billing-admin,
cs, sales, accounting, operator, viewer — with scrypt passwords, sessions,
and an audit log. Admin console login uses it when STAFF_IAM_URL is set
and hides tabs the account cannot use. CS/sales/accounting/staff/fleet
check permissions such as cs.credit and fleet.operate. Shared staff key
remains only as a fallback when IAM is unset.

packages/verae-staff-iam/test/roles.test.js

@@ -0,0 +1,22 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { expandRoles, allows, ROLES } from '../src/roles.js';
+import { StaffIam } from '../src/store.js';
+import { verifyPassword } from '../src/passwords.js';
+
+test('owner expands to all permissions', () => {
+  assert.deepEqual(expandRoles(['owner']), ['*']);
+  assert.equal(allows(['*'], 'cs.credit'), true);
+  assert.equal(allows(expandRoles(['cs']), 'cs.credit'), true);
+  assert.equal(allows(expandRoles(['cs']), 'accounting.export'), false);
+  assert.ok(ROLES.sales);
+});
+
+test('cannot deactivate last owner; passwords hash', () => {
+  const iam = new StaffIam().seed();
+  const owner = iam.findByUsername('admin');
+  assert.ok(verifyPassword(process.env.ADMIN_KEY || 'admin-dev-key', owner.passwordHash));
+  assert.throws(() => iam.update('admin', { active: false }, 'admin'), /last owner/);
+  const cs = iam.create({ username: 'anna', password: 'anna-pass-1', name: 'Anna', roles: ['cs'], actor: 'admin' });
+  assert.deepEqual(cs.roles, ['cs']);
+});