fix: Add app/frontend integration tests for the OpenAPI-generated client (#282)

app/frontend/test/openapi-types.test.ts

@@ -0,0 +1,18 @@
+import createClient from 'openapi-fetch';
+import type { paths } from '../src/lib/generated/api';
+
+describe('OpenAPI Generated Client Types', () => {
+  it('should compile with the generated paths interface', () => {
+    // This is purely a type-level test to ensure openapi-fetch 
+    // and the generated openapi-typescript types are compatible.
+    const client = createClient<paths>({ baseUrl: 'http://localhost' });
+
+    // Assert the client is created and has the expected HTTP methods
+    expect(client).toBeDefined();
+    expect(typeof client.GET).toBe('function');
+    expect(typeof client.POST).toBe('function');
+    expect(typeof client.PUT).toBe('function');
+    expect(typeof client.DELETE).toBe('function');
+    expect(typeof client.PATCH).toBe('function');
+  });
+});