feat(admin): live active-work view (5s refresh)

apps/admin/src/lib/elapsed.test.ts

@@ -0,0 +1,14 @@
+import { describe, expect, it } from 'vitest';
+import { formatTime } from './elapsed';
+
+describe('formatTime', () => {
+  it('formats seconds as HH:MM:SS', () => {
+    expect(formatTime(0)).toBe('00:00:00');
+    expect(formatTime(65)).toBe('00:01:05');
+    expect(formatTime(3661)).toBe('01:01:01');
+  });
+
+  it('never returns a negative time', () => {
+    expect(formatTime(-10)).toBe('00:00:00');
+  });
+});