test(behavior): cover config routing and registry seams

test/model-registry_test.ts

@@ -0,0 +1,40 @@
+import { assertEquals } from 'jsr:@std/assert@^1.0.0';
+import { ModelRegistry } from '../ts/models/registry.ts';
+
+Deno.test('ModelRegistry falls back to the built-in catalog when the source is unavailable', async () => {
+  const registry = new ModelRegistry('http://127.0.0.1:9/catalog.json');
+  const catalog = await registry.fetchCatalog(true);
+
+  assertEquals(catalog.version, '1.0');
+  assertEquals(catalog.models.length > 0, true);
+});
+
+Deno.test('ModelRegistry reads catalog entries from a local file source', async () => {
+  const filePath = await Deno.makeTempFile({ suffix: '.json' });
+  await Deno.writeTextFile(
+    filePath,
+    JSON.stringify({
+      version: '1.0',
+      generatedAt: '2026-01-01T00:00:00.000Z',
+      models: [
+        {
+          id: 'Qwen/Qwen2.5-7B-Instruct',
+          aliases: ['qwen-local'],
+          engine: 'vllm',
+          source: { repo: 'Qwen/Qwen2.5-7B-Instruct' },
+          capabilities: { chat: true },
+          requirements: { minVramGb: 16 },
+        },
+      ],
+    }),
+  );
+
+  try {
+    const registry = new ModelRegistry(filePath);
+    const model = await registry.getModel('qwen-local');
+
+    assertEquals(model?.id, 'Qwen/Qwen2.5-7B-Instruct');
+  } finally {
+    await Deno.remove(filePath);
+  }
+});