---
id: "c5d9f3a2-7b4e-5f6c-0a1d-3e8f9b2c4d5e"
name: "Core Hub Stabilization Closeout Check"
type: activity-definition
version: "1.0"
enabled: true
owner: core-hub
governance: core-hub
status: active
created: "2026-07-07"
trigger:
  type: scheduled
  at: "2026-07-10T17:35:00+00:00"
  timezone: UTC
context_sources:
  - type: core-hub
    query: stabilization_check
    required: true
    params:
      source: activity-core
      closeout: true
      base_url: "https://hub.coulomb.social"
      window_start: "2026-07-03T00:00:00+00:00"
      window_end: "2026-07-10T17:35:00+00:00"
      min_widget_types: 26
      evidence_sinks:
        - type: state-hub-progress
          event_type: core_hub_stabilization_closeout
          author: activity-core
          workstream_id: a8d66822-e435-4b1e-ad81-37a298d1795e
          task_id: 16eb7ce3-b574-4667-a189-c14ff5d0502b
    bind_to: context.core_hub_stabilization_check
---

# ActivityDefinition: Core Hub Stabilization Closeout Check

## Purpose

One-shot closeout gate at the end of the Core Hub stabilization window. When
`overall_pass` is true, the result sets `operator_signoff_needed=true` so the
operator can approve `CORE-WP-0007-T02` (Inter-Hub rename / rollback retirement).

## Output Contract

- one State Hub progress event with `event_type: core_hub_stabilization_closeout`
- fails the activity run when closeout checks do not pass
- operator records the retirement decision separately in State Hub