ops-mason/workplans/MASON-WP-0010-security-case-materialization.md

---
id: MASON-WP-0010
type: workplan
title: "Materialize SecurityCases from their type, with acceptance as the only gate"
domain: infotech
repo: ops-mason
status: active
flavor: implementation
owner: claude-code
topic_slug: netkingdom
created: "2026-10-08"
updated: "2026-10-08"
depends_on: []
related_repos:
  - net-kingdom
  - ops-warden
  - railiance-platform
state_hub_workstream_id: "eabf2c39-94bd-5a11-8f2e-76d7a95d1583"
---

# MASON-WP-0010 — Materialize SecurityCases from their type, with acceptance as the only gate

## Why

NetKingdom is introducing SecurityCaseTypes (net-kingdom `NK-WP-0048`, canon
`security-case-types_v0.1`, proposed). A type is designed once, with
documentation, tests and an informed-decision. Each case of an implemented type
is then light: it is accepted, ops-mason arranges it, and ops-warden follows
through.

ops-mason's four phases (construction plan, review, executive summary, build)
stay exactly as they are for **new types and for structure that no type
covers**. For a **KnownSecurityCase**, the construction plan is rendered from
the type's materialization templates, and the executive-summary gate collapses
to the case acceptance, because the shape was decided when the type was
acknowledged.

MASON-WP-0009 (a hand-built placement of a key-cape client secret) is the kind
of work this replaces. It becomes a reference instance for the first type.

## Tasks

```task
id: MASON-WP-0010-T01
status: done
depends_on: [NK-WP-0048-T03]
priority: high
state_hub_task_id: "3382ea7b-65ca-59a9-97ae-273455af44c2"
```

### T01 — Define the type's materialization section

Propose the `materialization` part of the SecurityCaseType schema together with
net-kingdom: policy, role, KV path structure and catalog-entry templates over
case parameters, with naming rules. These must respect ops-mason's existing
"respect, extend or compact before adding" review, so that a type cannot
template sprawl. Write it for the first type, `oidc-browser-relying-party`, from
MASON-WP-0009 and the existing key-cape client custody paths.

**Review (2026-10-08) of net-kingdom `security-case-types/oidc-browser-relying-party/type.yaml` 1.0.**
The structure (four items, all but the catalog entry conditional on
`confidential`) is right. The names add three new families where existing ones
cover the need, so they fail "respect, extend or compact before adding".
Requested refinements, each from the live CCR-2026-0033 placement
(`plans/keycape-secrets-engine-openbao-client-custody.md`):

1. **Fix the path in the type.** `secret_ref` should not be case-settable; a
   free pattern under `platform/workloads/` lets every case pick its own layout.
   Derive it: `platform/workloads/keycape/{client_id}` (field `CLIENT_SECRET`),
   as for `secrets-engine-openbao`.
2. **Reuse the policy family.** Existing readers are
   `workload-kv-read-keycape-<client>-<reader>`. Rename
   `keycape-client-{client_id}-read` to `workload-kv-read-keycape-{client_id}-eso`
   (KeyCape reads its client secret only through ESO), and
   `{consuming_service}-oidc-client-{client_id}-read` to
   `workload-kv-read-keycape-{client_id}-{consuming_service}`. Update
   verification `custody-allowed-to-consumer` and rollback to match.
3. **Template the policy body, not just its name.** An `openbao_policy` item
   needs its rules (`read` on `platform/data/workloads/keycape/{client_id}`,
   nothing else: no metadata, list, parent or sibling), or the review cannot
   check invariant (ii) and a rendered plan is not buildable.
4. **Add the missing ESO role.** `deliver-secret` needs a Kubernetes-auth role
   `external-secrets-keycape-{client_id}` (kind `openbao_role`, bound to the
   ESO service account, policy from item 2, 15m TTL, no default policy), as
   the reference placement has.
5. **Catalog naming.** The one existing entry is `rapp-qonto-keycape-client`;
   prefer `{consuming_service}-keycape-client` over `oidc-client-{client_id}`.
6. **Rollback order.** `mint-secret` "destroy" and `client-secret-path`
   "remove" act on the same KV path; collapse to one step (metadata delete
   after the ExternalSecret is gone) so rollback cannot fail on a missing path.

With 1-4 applied, the section is acceptable to ops-mason for NK-WP-0048-T05.

2026-10-08: net-kingdom folded in all six (net-kingdom `074b3a0`, message
`508e2a12`); its schema/validator now require a body on policy and role items.
NK-WP-0048-T05 still waits on WARDEN-WP-0044-T01 and a founder answer.

```task
id: MASON-WP-0010-T02
status: wait
depends_on: [MASON-WP-0010-T01, NK-WP-0048-T05]
blocking_reason: "Rendering waits for net-kingdom to fold in the T01 review and acknowledge the type (NK-WP-0048-T05)."
priority: high
state_hub_task_id: "fd385537-7378-5539-8a6e-f45851296f42"
```

### T02 — Render a construction plan from a case

`mason plan --case <case.yaml>` validates the case against its `implemented`
type, renders the construction plan from the type's templates, and runs the
existing consistency review against current OpenBao structure (read-only, no
values). The output is the usual plan, marked `derived-from-type`, plus the
case-acceptance reference in place of a fresh executive summary.

Tests: render the reference case; refuse a case whose type is not
`implemented`; refuse parameter values outside the type's validation; flag a
collision with existing structure.

```task
id: MASON-WP-0010-T03
status: wait
depends_on: [MASON-WP-0010-T02]
blocking_reason: "Building from an accepted case follows the rendering."
priority: high
state_hub_task_id: "56cea6be-c613-586c-80cd-125340b374da"
```

### T03 — Build from an accepted case

`mason build --case <case.yaml>` builds a rendered plan when the case's
acceptance record is present, with no separate executive-summary approval. Its
audit trail names the case, the type version and the acceptance. It proposes the
pointer-only ops-warden catalog entries the type defines, as today. Rollback
removes exactly what this case created.

Acceptance: the Forgejo reference case (NK-WP-0048-T06) materializes through this
path.

```task
id: MASON-WP-0010-T04
status: wait
depends_on: [MASON-WP-0010-T03]
blocking_reason: "Adoption follows a working light path."
priority: medium
state_hub_task_id: "f6ad0d3c-8f47-5fdf-8115-6ca9d8a1fead"
```

### T04 — Adopt MASON-WP-0009 as a case

Once `oidc-browser-relying-party` (or the confidential service client type) is
implemented, express MASON-WP-0009's placement as a case of that type without
changing the live structure, and close the hand-built path.