ops-warden/workplans/WARDEN-WP-0032-security-zones.md

---
id: WARDEN-WP-0032
type: workplan
title: "Adopt security zones as a consumer — retire the global policy.enabled"
domain: infotech
repo: ops-warden
status: proposed
owner: ops-warden
topic_slug: netkingdom
planning_priority: P1
depends_on_workplans:
  - WARDEN-WP-0031
created: "2026-08-19"
updated: "2026-08-19"
state_hub_workstream_id: "f1b6cdcb-5e16-48ab-a72b-339e909e92f0"
---

# WARDEN-WP-0032 — Adopt security zones as a consumer

`ADR-0006` defers `policy.enabled: true` until enforcement can be scoped to a
zone. **The zone model itself is no longer ops-warden's work.** It moved to
`zone-engine` as `ZONE-WP-0001` on 2026-08-19, where it belongs under `ADR-0005`
— ops-warden implements one lane narrowly and routes the rest, and an
estate-wide enforcement model is not a lane it should absorb.

What stays here is the consumer side: ops-warden was the repo whose deferred
flip exposed the gap, it holds the controls the model must be able to express,
and it is the first consumer the model has to satisfy.

## What ops-warden owes zone-engine

Inputs, not designs. `ZONE-WP-0001-T02` derives the model from the real estate,
and most of that estate is ops-warden's:

- **27 routing catalog lanes** (`registry/routing/catalog.yaml`) with `risk`,
  `status`, and `delegation` already on each — the likeliest membership inputs.
- **The actor inventory** (`adm` / `agt` / `atm`) and its TTL policy.
- **The three posture axes already shipped** — environment and maturity
  (WP-0015), `organization_posture` (WP-0029) — including the honest answer to
  whether `organization_posture` should be folded into zones rather than run
  beside them.
- **Three controls the model must be able to express**: the flex-auth pre-sign
  gate (`policy.enabled` + `fail_closed`), the agent read-boundary on
  `risk: high` lanes (`ADR-0004`), and the `warden plan` escalation verdicts.
- **The compiled-registry path** (`scripts/build_flex_auth_registry.py`) — how
  membership can reach flex-auth without a lookup in a latency-critical decision
  path.

## Tasks

```task
id: WARDEN-WP-0032-T01
status: todo
priority: high
state_hub_task_id: "b6dac514-4b05-47b8-8745-6a1c67b6100e"
```

**Hand the estate inputs to `ZONE-WP-0001-T02`.** Not a design proposal — the
lanes, actors, axes, and controls above, with the exceptions ops-warden already
knows do not fit cleanly (the interim delegation lanes from WP-0030 are the
obvious candidates: a lane covered on someone else's behalf may not sit in the
same zone as one ops-warden owns outright).

Include the `organization_posture` fold-in question honestly, including the case
against keeping it.

**Answered by net-kingdom 2026-08-19** (canon owner of `tenancy-posture_v0.1`,
answering `ZONE-WP-0001-T01`): **do not fold it in, and do not put it in a
per-repo declaration under any key.** `organization_posture` is a fleet-wide,
time-varying scalar describing the *estate*, not a property of a declaring
service; a per-repo copy of a global goes stale in as many places as there are
repos. It stays what WP-0029 made it — an input to stance selection that the
zone model reads. Hand it over as an input, not as a candidate axis. Environment
posture and `M0`–`M3` are per-workload and remain genuinely composable; those two
are still open for `ZONE-WP-0001-T02`.

```task
id: WARDEN-WP-0032-T02
status: wait
priority: high
state_hub_task_id: "08735f17-fe7e-4a6a-9b71-f350f98c30b1"
```

**Replace `policy.enabled` with a zone-aware control.** Waits on
`ZONE-WP-0001-T03` and `T05`. Reads the zone of the actor being signed for and
that zone's failure mode. Ship deprecation and migration in the same change —
leaving both is the second-source-of-truth failure `ADR-0001` exists to prevent.

Re-run `scripts/check_policy_caller_identity.py` before enabling anything: the
WP-0031 evidence (`decision:f3f7c88f9585582a`, 2026-08-19) will be stale, and
re-establishing it is cheap precisely so this is a re-check rather than a re-do.

This closes `WARDEN-WP-0031-T05`.

**Amended by flex-auth 2026-08-19, reviewing `ZONE-WP-0001` as the PDP.** Two
constraints that change what this task can build, both argued in full at
`ZONE-WP-0001-T03` and `T04`:

1. **The zone-aware control splits across the boundary, it does not move.**
   flex-auth will read compiled zone *membership* from the registry and apply the
   per-zone *stance* from its policy package, returning an effect plus an
   advisory annotation. What stays on the ops-warden side is the axis flex-auth
   structurally cannot carry: **`fail_closed` is not expressible by a PDP.**
   Fail-open describes what `warden sign` does when flex-auth is *unreachable* —
   no decision is rendered, so no compiled data and no policy rule can reach it.
   So the replacement for `policy.enabled` is not one zone-derived boolean
   either; it is (a) stance, which arrives *in the decision*, and (b) failure
   mode, which stays a local ops-warden setting declared per zone. Plan for two,
   or T02 will be built expecting flex-auth to answer something it cannot.

2. **The membership compiler is ops-warden's to change, and it has a name
   collision to resolve first.** `scripts/build_flex_auth_registry.py:77` already
   emits `"trust_zone": "platform"` as a hardcoded constant on every
   ssh-certificate resource. It is a first-class field on flex-auth's `Resource`,
   it is surfaced into rego input, and **no policy package reads it**. Before
   compiling zone membership, either retire that constant or deliberately
   repurpose it — do not add `security_zone` beside a dormant `trust_zone` and
   leave the next reader to guess which is real. That is the `ADR-0001`
   second-source-of-truth failure in miniature, inside a generated artifact.

Good news for T03's cost: **no flex-auth registry schema change is required.**
`metadata`, `labels` and `attributes` already flatten into the rego input, so the
compiler can emit membership today.

```task
id: WARDEN-WP-0032-T03
status: wait
priority: medium
state_hub_task_id: "fd642377-8d64-473c-b684-f8f1a842c223"
```

**Declare ops-warden's zones** in the format `ZONE-WP-0001-T05` settles,
alongside the existing posture descriptors.

**Amended by net-kingdom 2026-08-19 — the carrier file is already settled, only
its contents are open.** Canon Decision 5.6 (`tenancy-posture_v0.1` draft-9)
rules that zone membership is declared in **`tenancy.yaml` under a reserved
top-level `zones:` key**, sibling to `tenancy:` and `provider:` and never inside
`tenancy.current`. §5.4 makes that file the repo's single posture declaration
surface, and a second root file would be the second-source-of-truth failure
`ADR-0001` exists to prevent — in ops-warden's own idiom. The key is reserved and
deliberately unconstrained in `net-kingdom/canon/schemas/tenancy-posture_v0.1.schema.json`,
so a combined declaration validates today.

Note the consequence for this repo: **ops-warden does not currently have a
`tenancy.yaml`.** Declaring zones means writing one, which means declaring the
six-axis posture vector too. That is a real and probably overdue cost, not an
accident of this amendment — canon would rather ops-warden declare both
accurately than declare a zone with no posture beside it.

Note also *why* stance is not something this declaration may set: canon Decision
5.6 rules that a declarer must not be the party that sets the stance, or an
accurately declared `exempt` becomes conformant *and* exempt. ops-warden declares
which zone a lane or actor is in. The stance of the pre-sign gate in that zone is
flex-auth's policy package; the failure mode is ops-warden's own setting, per
flex-auth's T03 amendment. Per flex-auth's T05 amendment, this
declaration must also say whether a zone rides the **actor** (a flex-auth
subject) or the **lane** (a flex-auth per-actor resource) — in the compiled
registry an actor is both, and the compiler needs to be told which record
carries membership. Carry the conformance rule:
*accuracy, not altitude*. Declaring a stricter zone than can be evidenced is the
failure mode that looks like progress.

```task
id: WARDEN-WP-0032-T04
status: wait
priority: medium
state_hub_task_id: "1af3d26e-ce21-46ca-a56c-486d52b76dcb"
```

**Amend `ADR-0006`.** Once zones exist and enforcement scoping is owned by
`zone-engine`, ADR-0006 must say that ops-warden *follows* the model rather than
owning it — a superseding record, never an in-place edit. Update `SCOPE.md`,
`wiki/WorkloadSecurityPosture.md`, and `wiki/PolicyGatedSigning.md` with it.

## Related

- `zone-engine` `ZONE-WP-0001` — the model, and where this work is led from
- `ADR-0006` — enforcement is zone-scoped, never a global flag
- `WARDEN-WP-0031` — the deferred flip and its readiness evidence
- `net-kingdom` `tenancy-posture_v0.1` draft-9 Decisions 5.6, 8.4.1, 8.4.2 — canon's
  answer to `ZONE-WP-0001-T01`; enforcement stance is a sibling standard, not a
  seventh axis, and the declaration surface is `tenancy.yaml`