Complete WP-0006 through WP-0009: registry expansion, catalog, graph, tests

Register six new capabilities (12 total), add searchable catalog UI and graph
explorer, introduce pytest suite with CI fail-on-warnings, and close gap
analysis priorities 13 and 16. WP-0010 remains backlog for network federation.

workplans/REUSE-WP-0006-registry-hygiene-and-coverage.md

@@ -0,0 +1,78 @@
+---
+id: REUSE-WP-0006
+type: workplan
+title: "Registry hygiene and coverage expansion"
+domain: helix_forge
+repo: reuse-surface
+status: finished
+owner: codex
+topic_slug: helix-forge
+created: "2026-06-15"
+updated: "2026-06-15"
+state_hub_workstream_id: "d3d0b3ae-dedc-48bc-a6d2-16975e10acc3"
+---
+
+# Registry hygiene and coverage expansion
+
+Close broken relation references, register missing adjacent capabilities, and
+expand helix_forge registry coverage so `reuse-surface graph --check` and
+`validate --relations` run clean.
+
+## Register Missing Relation Targets
+
+```task
+id: REUSE-WP-0006-T01
+status: done
+priority: high
+state_hub_task_id: "183b42ae-7773-484f-afe7-4966e26f1768"
+```
+
+Register three capabilities referenced by existing relations but not yet in the
+index:
+
+- `capability.registry.validate`
+- `capability.feature-control.visibility`
+- `capability.statehub.progress-log`
+
+Each entry must pass validation and appear in the index.
+
+## Expand helix_forge Coverage
+
+```task
+id: REUSE-WP-0006-T02
+status: done
+priority: high
+state_hub_task_id: "3c6b4e4a-07c0-4a06-a64b-f152f8bdb35d"
+```
+
+Register at least three additional helix_forge capabilities from adjacent repos:
+
+- `capability.authorization.policy-evaluate` (flex-auth)
+- `capability.activity.event-coordinate` (activity-core)
+- `capability.audit.event-retain` (audit-core)
+
+Illustrate distinct vectors and link relations where appropriate.
+
+## Regenerate Derived Artifacts
+
+```task
+id: REUSE-WP-0006-T03
+status: done
+priority: medium
+state_hub_task_id: "417e7a0d-2bdd-43fd-8604-3d48cc1fc083"
+```
+
+Run and commit outputs from `federation compose`, `graph`, `catalog`, and
+`export`. Confirm `validate --relations` reports no broken references.
+
+## Update Documentation
+
+```task
+id: REUSE-WP-0006-T04
+status: done
+priority: medium
+state_hub_task_id: "9e061f46-5de8-4cf7-a7f1-b0e886391b7d"
+```
+
+Update `SCOPE.md` capability inventory and `docs/IntentScopeGapAnalysis.md`
+self-assessment after coverage growth.