cleanup: fully remove orphaned council-complaints app

The council-complaints app (Islington civic-reporting pilot) has been
abandoned. It was already dead in the cluster (deployments scaled 0/0,
image only on the decommissioned registry.viktorbarzin.me which 404s),
and it was never in Terraform — only docs + a kyverno comment referenced
it. Its live cluster resources (namespace, both NFS-backed PVs, ingresses)
were torn down out-of-band via kubectl (nothing in TF to drift from); the
DB-dump PVC was backed up to NFS first.

This removes the remaining repo references to the live app:
- service-catalog.md: drop the council-complaints row
- ci-cd.md + .claude/CLAUDE.md: drop it from the GHA->ghcr app list
- kyverno require-trusted-registries: the registry.viktorbarzin.me/*
  allowlist comment claimed council-complaints as the last referencer;
  rewrite it (no live workload pulls from that registry now; only stale
  completed Job records still carry the ref). The allowlist line itself
  is kept (registry-scoped, not app-specific).

Historical point-in-time plan docs (docs/plans/2026-05-16-auto-upgrade-
apps-{design,plan}.md) still mention it inside a frozen "10 GHA-migrated
repos (memory id=388)" snapshot; left as-is so the dated record stays
accurate.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/architecture/ci-cd.md

@@ -116,7 +116,7 @@ instagram-poster, payslip-ingest, broker-sync (image name `wealthfolio-sync`),
 fire-planner, recruiter-responder, x402-gateway — plus **tripit** (the original
 pilot, 2026-06-09). Earlier public-repo apps already on GHA (Website,
 k8s-portal, apple-health-data, audiblez-web, plotting-book, insta2spotify,
-audiobook-search, council-complaints) now also land on ghcr.
+audiobook-search) now also land on ghcr.
 
 ### Infra-owned images (issues #29 / #30)