feat(api): add staff order detail and compliance eligibility

backend/command-api/test/staff-order-eligibility.test.js

@@ -0,0 +1,14 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { buildStaffOrderEligibilityBlockers } from '../src/lib/staff-order-eligibility.js';
+
+test('buildStaffOrderEligibilityBlockers formats missing document blockers for command flows', () => {
+  const blockers = buildStaffOrderEligibilityBlockers({
+    missingDocumentNames: ['Food Handler Card', 'Food Handler Card', ' Responsible Beverage Service '],
+  });
+
+  assert.deepEqual(blockers, [
+    'Missing required document: Food Handler Card',
+    'Missing required document: Responsible Beverage Service',
+  ]);
+});