---
id: USER-WP-0002
type: workplan
title: "User Engine Isolated MVP"
domain: netkingdom
repo: user-engine
status: finished
owner: codex
topic_slug: netkingdom
planning_priority: high
planning_order: 2
created: "2026-05-22"
updated: "2026-05-22"
depends_on:
  - USER-WP-0001
state_hub_workstream_id: "780ce3bb-9af0-43dc-85cd-a9288e3d74c7"
---

# USER-WP-0002 - User Engine Isolated MVP

## Goal

Implement the smallest useful headless service in isolation: users, accounts,
identity links, one application, one catalog, profile values, effective
profile resolution, projections, audit, outbox, and tests.

## Tasks

```task
id: USER-WP-0002-T1
status: done
priority: high
state_hub_task_id: "0b43c19e-7ca4-4d32-93f4-3c083a200092"
```

Implement the domain model and local persistence migrations.

```task
id: USER-WP-0002-T2
status: done
priority: high
state_hub_task_id: "d6404f5c-292f-4eb5-819b-42fe8c237c60"
```

Implement IAM Profile-compatible fixture actor handling and local identity
linking by `(issuer, subject)`.

```task
id: USER-WP-0002-T3
status: done
priority: high
state_hub_task_id: "b0b0ad70-d590-4faf-916e-41dbf25d6c5f"
```

Implement the authorization check port with a deterministic local test
adapter.

```task
id: USER-WP-0002-T4
status: done
priority: high
state_hub_task_id: "ce310565-75e3-4fb4-9358-0aaff14a8ada"
```

Implement headless APIs for health, readiness, `me`, users, account lifecycle,
identity links, applications, catalogs, profiles, projections, and audit.

```task
id: USER-WP-0002-T5
status: done
priority: high
state_hub_task_id: "4ebb8649-e3ff-4da8-80cd-eef8b1488129"
```

Implement catalog validation, profile value validation, defaults, global plus
application profile layers, and inspectable effective profile resolution.

```task
id: USER-WP-0002-T6
status: done
priority: high
state_hub_task_id: "a238bbd8-95bb-499a-85f4-744acce188d4"
```

Persist audit records and outbox events atomically with mutations.

```task
id: USER-WP-0002-T7
status: done
priority: high
state_hub_task_id: "a9826644-1fea-4ada-bc21-7c545e790ffc"
```

Add tests for lifecycle, identity linking, catalog validation, profile update
authorization, projections, redaction, audit/outbox atomicity, and deny paths.

## Acceptance Criteria

- A demo application can register, publish a catalog, write profile values,
  and read an effective projection.
- Self-service and admin-style operations work through the local auth adapter.
- Sensitive values are redacted in non-eligible projections.
- MVP tests cover positive and negative use cases.