fix(conformance): L1 rendering never ran on a requirement-scoped gate

All three L1 tests now declare `conformance.home.k3s/scope: "whole-repo"`.

ci/l1.sh has passed --include-scope whole-repo since it was written, with a
comment saying no L1 test declared the scope yet and it was wired ahead of time
so the next whole-repo invariant "at any layer" would be picked up by annotation
alone. Nothing ever declared it. The consequence is that the entire L1 rendering
layer only ran when a touched path happened to attribute R-PLAT-02, R-NET-01 or
R-NET-05/06/07 — a fail-open hole for every other change in the repo.

The coupling requirement-scoped selection cannot see is that all three tests
exercise ONE code path: catalog/render.py against
schemas/servicedefinition.schema.json. Anything that changes rendered output
invalidates these goldens no matter which requirement the touched path maps to.

The 2026-09-04 external-dns merge is the proof, measured rather than asserted.
ci/touched-requirements.sh attributes platform/externaldns/helmrelease.yaml to
R-ENV-02, R-OBS-01/02/04, R-STATE-03 and R-TEST-01/02/03/04 — none of the
rendering requirements — yet that change added

    external-dns.alpha.kubernetes.io/controller: none

to the rendered output of all three goldens. Via --print-selection:

  requirement-scoped only (the 2026-09-04 behaviour):  0 L1 tests selected
  with --include-scope whole-repo (how ci/l1.sh runs): 3 L1 tests selected

So the merge gated GREEN while leaving every rendering golden stale, and the
staleness surfaced only on a later full run.

Also corrects the now-false comment in ci/l1.sh that said no L1 test declares the
scope, and records why the annotation is load-bearing there.

Verified: offline l0,l1,meta --include-scope whole-repo in the pinned toolbox —
25 tests, 0 failures, 0 errors, exit 0.

Co-Authored-By: Claude Opus 5 <[email protected]>

conformance/tests/l1-rendering/container-workload-render/chainsaw-test.yaml

@@ -23,6 +23,17 @@ metadata:
     conformance.home.k3s/requirements: "R-PLAT-02"
     conformance.home.k3s/layer: "L1"
     conformance.home.k3s/safety-critical: "false"
+    # WHY SCOPE, NOT REQUIREMENTS ALONE: every L1 test exercises ONE shared code path —
+    # catalog/render.py against schemas/servicedefinition.schema.json — so anything that changes
+    # rendered output breaks these goldens regardless of which requirement the touched path maps to.
+    # Requirement-scoped selection cannot see that coupling. Concretely (2026-09-04 external-dns
+    # merge): `platform/externaldns/helmrelease.yaml` attributes R-ENV-02, R-OBS-01/02/04,
+    # R-STATE-03 and R-TEST-01/02/03/04 via ci/touched-requirements.sh — NOT R-PLAT-02, R-NET-01 or
+    # R-NET-05/06/07 — yet it added `external-dns.alpha.kubernetes.io/controller: none` to the
+    # rendered output of ALL THREE L1 goldens. A requirement-scoped gate selected ZERO L1 tests, went
+    # GREEN, and left every golden stale; the staleness surfaced only on a later full run.
+    # ci/l1.sh has passed --include-scope since it was written, waiting for this annotation.
+    conformance.home.k3s/scope: "whole-repo"
     conformance.home.k3s/intent: >-
       A kind: container ServiceDefinition renders a Deployment + Service (the PaaS path).
 spec: