[rmcdaniel]

Part of #325. Stacked on the #675 train, which carries the 2.11.1 reference.

What

The eight service-catalog reads that published Server 2.11 added: GET /api/service-catalog/{endpoints|services|operations|calls} and GET /api/service-catalog/{…}/{id}. Waterline's service catalog view calls them; native answered 501 rust_capability_not_implemented.

Native never holds catalog rows:

• takeover refuses a PHP database with services, endpoints, operations or service calls (upgrade_source_services_unsupported / upgrade_source_service_calls_unsupported);
• native has no path that writes them.

So PHP's answers for an empty catalog are exact for native:

• Lists: 200 pages with empty data, the requested page and per_page (defaults 1 and 50), total: 0, last_page: 1 and the resolved namespace. Calls also report scope, buckets, outcome and the status and outcome vocabularies.

• Identities: 404 catalog_object_not_found.

• Filters, validated like PHP's filters():

  • an unsupported filter, including page on a detail;
  • a non-integer or out-of-range page / per_page (adds Laravel's between rule);
  • an empty identity filter;
  • an unknown scope, status, outcome or bucket;
  • a bucket that disagrees with status_bucket.

  Each answers 422 validation_failed with Laravel's messages.

• Namespace selection, version header and auth: the existing control-plane admission handles them. The catalog joins the named-namespace allowlist for GET.

Evidence

• Measured first on the published 2.11.1 image: 37 requests covering every route, every filter refusal and namespace selection by header, query and default, case-folded. Native answers all 37 identically (status and body).
• The service-catalog fixture encodes those 37 answers against the fixture's own namespace, with a contract and 18 unit tests (15 mutations).
• Native unit tests for paging, refusals and not-found.
• Local parity step against PHP 2.11.1: see below.

Local parity step against PHP 2.11.1: PHP, embedded (explicitly inapplicable) and native each pass every fixture, including service-catalog, and the three-way comparison passes.