feat(registry): add Integration Definition schema v0.1

Define the open-reuse integration asset registry format with JSON Schema,
authoring template, discovery index, and analyze→classify→refactor→maintain
lifecycle documentation. Validates against the markitect-quarkdown reference
integration.

Closes OPEN-WP-0002.

workplans/OPEN-WP-0002-integration-asset-registry.md

@@ -4,11 +4,11 @@ type: workplan
 title: "Integration asset registry foundation"
 domain: infotech
 repo: open-reuse
-status: ready
+status: finished
 owner: codex
 topic_slug: infotech
 created: "2026-06-22"
-updated: "2026-06-22"
+updated: "2026-06-24"
 state_hub_workstream_id: "07cec732-6526-48e4-84d0-373e4abcb6d4"
 ---
 
@@ -20,9 +20,19 @@ Establish registry format for managed OSS integration assets.
 
 ```task
 id: OPEN-WP-0002-T01
-status: todo
+status: done
 priority: high
 state_hub_task_id: "b55b4413-2053-40bd-bee1-d138937f0b4f"
 ```
 
+Result 2026-06-24: Integration Definition schema v0.1, template, index, and
+lifecycle documentation.
+
 Define integration asset schema in `registry/` and document analyze→classify→refactor→maintain loop.
+
+Deliverables:
+
+- `schemas/integration.schema.yaml` — JSON Schema for Integration Definitions
+- `templates/integration-entry.template.yaml` — authoring template
+- `registry/indexes/integrations.yaml` — discovery index with markitect-quarkdown reference
+- `registry/README.md` — analyze→classify→refactor→maintain loop and validation checklist