Merge - Merge PRs, Close Issues, Clean Up Branches

Merge all open PRs and close related issues. Requires the gh CLI to be authenticated (gh auth status).

Phase 0: Get Repository Info

0. Get GitHub owner/repo: use the cached values from the session context (injected at SessionStart). Only if absent, parse once from git remote get-url origin (SSH: git@github.com:owner/repo.git, HTTPS: https://github.com/owner/repo.git). Use the owner/repo for ALL GitHub calls in this command.

Phase 1: Gather State

1. Gather state:
   • List all open PRs: gh pr list --json number,title,headRefName,baseRefName,url,body
   • List all open issues with "feature" or "bugfix" labels: gh issue list --label feature --label bugfix --json number,title
   • Read .claude-harness/features/active.json:
     • Check features array for linked issue/PR numbers
     • Check fixes array for linked issue/PR numbers

Phase 2: Build Dependency Graph

2. Build dependency graph:
   • For each PR, check if its base branch is another feature branch (not main/master)
   • Order PRs so that dependent PRs are merged after their base PRs
   • If PR A base is PR B head branch, merge B first

Phase 3: Pre-merge Validation

3. Pre-merge validation for each PR (gh pr view {number} --json state,mergeable,reviewDecision,statusCheckRollup):
   • CI status passes
   • No merge conflicts
   • Has required approvals (if any)
   • Report any PRs that cannot be merged and why

Phase 4: Execute Merges

4. Execute merges in dependency order:
   • Merge the PR: gh pr merge {number} --squash --delete-branch (--delete-branch removes the remote branch and, when the repo is checked out on it, moves you back to the default branch)
   • Find and close any linked issues:
     • Check PR body for "Closes #XX" or "Fixes #XX" (these auto-close on merge)
     • Check .claude-harness/features/active.json for linked issues; close stragglers with gh issue close {number}
   • For fix PRs:
     • Close the fix issue
     • Add comment to original feature issue: gh issue comment {number} --body "Related fix merged: #{fix-issue} - {description}"
   • Delete the local branch if it remains: git branch -d {branch} (safe delete)
   • Update .claude-harness/features/active.json:
     • For features: Set status="passing" in features array
     • For fixes: Set status="passing" in fixes array

Phase 5: Cleanup

5. Cleanup:
   • Prune local branches: git fetch --prune
   • Delete local feature branches that were merged
   • Verify remote branches were deleted (list any that remain)
   • Switch to main/master branch
   • Pull latest: git pull

Phase 6: Report Summary

6. Report summary:
   • PRs merged (with commit hashes)
   • Issues closed
   • Branches deleted (local and remote)
   • Any failures or skipped items

Note: Version tagging and GitHub releases should be managed separately using git commands or GitHub's release UI directly.