feat(health): service registry loader + seed config (fresh titles)

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

tests/health/registry.test.js

@@ -0,0 +1,17 @@
+import { describe, it, expect } from 'vitest';
+import { load, grouped, iconSlug, CATEGORY_ORDER } from '../../lib/health/registry.js';
+
+describe('registry', () => {
+  it('loads the seed config', () => { expect(load().length).toBeGreaterThan(0); });
+  it('derives an icon slug from icon or name', () => {
+    expect(iconSlug({ name: 'Open WebUI' })).toBe('open-webui');
+    expect(iconSlug({ name: 'Plex', icon: 'plex' })).toBe('plex');
+  });
+  it('groups in agents→infrastructure→media order', () => {
+    const g = grouped(load());
+    const cats = g.map(x => x.category);
+    const ai = cats.indexOf('agents'), mi = cats.indexOf('media');
+    expect(ai).toBeLessThan(mi);
+    expect(CATEGORY_ORDER[0]).toBe('agents');
+  });
+});