issue_type: feature
title: "Feature 2.1: Implement PR Merge Blocker (DoD Check)"
priority: high
area: ci
domain: dotgithub
team: Engineering
effort: 3.5
parent_epic: "Epic: Issue Type & Metadata Automation Initiative"

Feature 2.1: Implement PR Merge Blocker (DoD Check)

Problem

PR can merge even if linked issue has incomplete DoD checklist.

Solution

Create new workflow validate-linked-issue-dod-on-pr.yml that:

1. Parses linked issues from PR body
2. For each linked issue: check DoD completion
3. If incomplete: block merge + post comment

Acceptance Criteria

1. ✅ Parse linked issues (closes PR: Add missing chatmode index entries and create master indexes for instructions and collections #123, fixes chore(workflows): migrate release/labeling bash logic to Node scripts #456)
2. ✅ Check DoD completion for each
3. ✅ Block merge if incomplete
4. ✅ Post clear comment listing incomplete items
5. ✅ Test: PR with incomplete linked issue → merge blocked
6. ✅ Test: PR with complete linked issue → merge allowed

Estimated Time

• Total: 3.5 hours

Type: Feature
Priority: High
Effort: 3.5 hours
Phase: 2
Target Date: Aug 6-7, 2026

Definition of Ready (DoR)

• Problem statement and outcome defined
• Acceptance criteria written (Given/When/Then)
• Designs/specs/references attached (if relevant)
• Dependencies mapped
• Estimate added
• Stakeholders/approvers listed
• Milestone/iteration assigned (if applicable)

Definition of Done (DoD)

• All acceptance criteria met
• Tests added/updated; CI green
• Accessibility: WCAG 2.2 AA compliance verified (semantic HTML, keyboard support, colour contrast)
• Security: input validated, output escaped, no OWASP Top 10 vulnerabilities
• Performance: no measurable regression introduced
• Docs/changelog updated
• Feature toggles/rollout considered
• QA verified/UAT approved (if applicable)
• Release notes prepared; monitoring/alerts set