Add implementation workplans and integration boundaries

workplans/USER-WP-0001-preparation-and-interface-adoption.md

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+---
+id: USER-WP-0001
+type: workplan
+title: "User Engine Preparation And Interface Adoption"
+domain: netkingdom
+repo: user-engine
+status: ready
+owner: codex
+topic_slug: netkingdom
+planning_priority: high
+planning_order: 1
+created: "2026-05-22"
+updated: "2026-05-22"
+state_hub_workstream_id: "cc5ff9a5-5592-45e3-b7ef-cf6c7fab0f03"
+---
+
+# USER-WP-0001 - User Engine Preparation And Interface Adoption
+
+## Goal
+
+Prepare this repository for implementation by adopting the boundary guidance
+from the PRD, architecture blueprint, and NetKingdom interface guidance.
+
+## Tasks
+
+```task
+id: USER-WP-0001-T1
+status: todo
+priority: high
+state_hub_task_id: "7f91d466-2f97-4acf-832a-e9de0b21be04"
+```
+
+Define the initial repository layout, implementation stack, local commands,
+test commands, and module boundaries.
+
+```task
+id: USER-WP-0001-T2
+status: todo
+priority: high
+state_hub_task_id: "940ce697-fbad-4ef9-9024-175f482b2d3a"
+```
+
+Implement or document the core ports: identity claims adapter, authorization
+check port, application binding store, membership fact exporter, event outbox,
+audit writer, and secret provider.
+
+```task
+id: USER-WP-0001-T3
+status: todo
+priority: high
+state_hub_task_id: "c16bd102-0f86-4951-86ee-8d6088ac888b"
+```
+
+Create initial schemas for users, accounts, identity links, applications,
+catalogs, profile values, memberships, audit records, and outbox events.
+
+```task
+id: USER-WP-0001-T4
+status: todo
+priority: medium
+state_hub_task_id: "9e962947-6d1f-49ae-a362-d8a13d430b87"
+```
+
+Create local development fixtures for verified identity envelopes and
+authorization decisions.
+
+```task
+id: USER-WP-0001-T5
+status: todo
+priority: medium
+state_hub_task_id: "c5b24341-ae26-48a0-97ac-6fbcf108b0e0"
+```
+
+Document standalone and platform mode configuration boundaries.
+
+## Acceptance Criteria
+
+- The repo has a clear implementation layout and command set.
+- Interface ports exist as code or precise specs.
+- Domain ownership does not duplicate identity, authorization, secret custody,
+  deployment, or UI responsibilities.
+- USER-WP-0002 can start without unresolved interface ownership.