WP-0015: complete compose acceptance after Gitea visibility fix

Refresh federated index (20 capabilities, 0 duplicate warnings). Update
workplan, SCOPE, gap analysis, and tests for 59/60 publish pass. Mark
T04/T06 done; T01 remains on tegwick-control repo creation.

Note: production hub whynot URLs still need REUSE_SURFACE_TOKEN update.

docs/catalog/registry.json

@@ -2,24 +2,6 @@
   "domain": "helix_forge",
   "updated": "2026-06-16",
   "capabilities": [
-    {
-      "id": "capability.activity.event-coordinate",
-      "name": "Organizational Event Coordination",
-      "summary": "Coordinate structured responses to cross-domain events through activity workflows and automation.",
-      "vector": "D3 / A1 / C1 / R0",
-      "domain": "helix_forge",
-      "status": "draft",
-      "owner": "activity-core",
-      "path": "registry/capabilities/capability.activity.event-coordinate.md",
-      "tags": [
-        "activity",
-        "coordination",
-        "automation"
-      ],
-      "consumption_modes": [
-        "informational"
-      ]
-    },
     {
       "id": "capability.registry.register",
       "name": "Capability Registration",