The pr_compliance_pool_supervisor_steps.py file defined @then step texts
identical to those in the pre-existing pr_compliance_checklist_steps.py,
causing Behave's ambiguous-step detection to reject the test run.
Fix: prefix all pool-supervisor @then decorators with 'Pool:' so they're
uniquely identifiable by Behave while reusing the same validator logic.
Also fix PROJECT_ROOT from parents[3] -> parents[2] for correct repo root
resolution in step files located at features/steps/.
ISSUES CLOSED: #9824
Add a new implementation-pool-supervisor agent definition with an embedded
8-item PR Compliance Checklist. Workers dispatched by the pool supervisor
must complete all 8 items before creating any PR: CHANGELOG.md update,
CONTRIBUTORS.md update, commit footer (ISSUES CLOSED: #N), CI verification,
BDD tests, Epic reference, label application via forgejo-label-manager,
and milestone assignment. Includes concrete markdown examples for each
subsection and compliance verification pseudocode.
Also adds BDD test coverage (pr_compliance_pool_supervisor.feature + steps)
to verify the pool supervisor agent definition contains all 8 checklist items.
Parent Epic: #9779
ISSUES CLOSED: #9824
HAL9000