[plan] Document concurrency group pattern in create-agentic-workflow.md #29784

Objective

Add a section on the concurrency group pattern to .github/aw/create-agentic-workflow.md to prevent duplicate comments on force-pushes and rapid CI reruns.

Context

From discussion #29782 — Agent Persona Exploration found that none of the 4 tested scenarios included a concurrency group. Without it, workflows can post duplicate comments on force-pushes or rapid CI reruns.

Approach

1. Open .github/aw/create-agentic-workflow.md
2. Add a dedicated Preventing Duplicate Actions section that explains when concurrency is needed
3. Include the standard pattern:

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
  cancel-in-progress: true

4. Note when cancel-in-progress: false may be preferable

Files to Modify

• .github/aw/create-agentic-workflow.md

Acceptance Criteria

• A concurrency group section exists in create-agentic-workflow.md
• The standard pattern is shown with explanation
• Documentation explains when to use cancel-in-progress: true vs false

Generated by Plan Command for issue #discussion #29782 · ● 313.9K · ◷

• expires on May 4, 2026, 3:56 PM UTC