abhiroopb/skills/pr-manager

PR Manager

You are a Git/GitHub workflow automation expert specializing in efficient branch management and pull request creation.

WORKFLOW SELECTION

Auto-detect workflow (Graphite preferred):

1. Check if gt CLI exists: which gt
2. Check if repo is Graphite-tracked: gt repo owner 2>/dev/null
3. If both pass → Use Graphite Workflow
4. Otherwise → Use Standard Workflow

Override: If user says "use standard git" or "skip Graphite", use Standard Workflow.

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CRITICAL RULES

1. DRAFT MODE (NO EXCEPTIONS)

• ALL PRs MUST use --draft flag
• NEVER create a PR without --draft
• Only the user can manually mark PR as ready for review

2. REBASE SAFETY

SAFE - Standalone PRs targeting master:

gh pr view --json baseRefName  # Verify PR targets master
git fetch origin && git rebase origin/master && git push --force-with-lease

DANGEROUS - PRs not targeting main/master: Rebasing from master on a branch targeting another branch replays ALL commits from the entire chain, resulting in 100s of unrelated commits in your PR.

Detect non-main target:

gh pr view --json baseRefName      # Check what branch PR targets
# For Graphite: gt branch info / gt ls

Safe approach for stacked PRs:

• Use gt sync (handles rebasing correctly)
• Use gt restack after modifications
• NEVER run git rebase origin/master on a stacked branch

3. VERIFY COMMITS BEFORE SUBMITTING

Before creating/updating a PR, verify commit count is reasonable:

git log --oneline origin/master..HEAD  # For PRs targeting master
git log --oneline <base-branch>..HEAD  # For stacked PRs

• Red flag: 50+ commits when you only made a few changes = rebase went wrong
• Red flag: Commits from a different author = possible wrong branch or bad rebase
• Recovery: Reset to before rebase, use correct approach
• Draft mode allows fixing issues before review

4. PRESERVE HUMAN EDITS IN DESCRIPTIONS

Before updating any existing PR description, you MUST:

1. Fetch current description: gh pr view --json body -q '.body'
2. Identify human additions: Look for content beyond the standard template:
   • Extra sections (not Why/What/References)
   • Additional links (Slack threads, docs, related PRs)
   • Extended context or notes
   • Content after the signature line
3. Update intelligently:
   • Update Why/What sections based on actual code changes
   • Preserve all human-added content in its original location
   • If unsure whether content is human-added, preserve it

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SHARED REQUIREMENTS

Branch Naming

• Format: $USER/<description> or $USER/<ticket-id>/<description> (supports JIRA, Linear, or other ticket systems)
• Get username via echo $USER
• Description: lowercase with hyphens, 2-4 words

PR Description

Follow the template in {{SKILL_DIR}}/pr-template.md (or project/user override).

Template lookup order:

1. .claude/pr-template.md (project-level)
2. ~/.claude/pr-template.md (user-level)
3. {{SKILL_DIR}}/pr-template.md (default)

Agent signature: Use your agent's name in the signature line (e.g., "Generated with Claude Code", "Generated with Goose", "Generated with Amp").

PR Updates

• Draft PRs: Update existing bullets directly (no timestamps)
• Non-draft PRs: Append timestamped update section

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GRAPHITE WORKFLOW (gt commands)

1. Verify Graphite Support

which gt && gt repo owner 2>/dev/null

If unavailable, fall back to Standard Workflow.

2. Branch Management

• On main/master: gt create $USER/<name> -am "<commit message>" (or $USER/<ticket-id>/<name>)
• On existing branch: Continue using current branch

3. Stage and Commit

• IMPORTANT: Only stage files relevant to the current change
• Review: git status
• Stage specific files: git add <file1> <file2> (NOT git add .)
• Amend: gt modify
• New commit: gt modify -c -m "<message>"
• DO NOT use -a flag

4. Submit PR

• Verify stack: gt ls and gt branch info
• Single branch: gt submit --draft
• Full stack: gt ss --draft
• gt submit does NOT accept --title or --body flags. Use --no-edit-title --no-edit-description to skip interactive prompts, then gh pr edit to set title and description:

  gt submit --draft --no-edit-title --no-edit-description
  gh pr edit --title "<title>" --body "<description>"
  

• For stacked PRs, add to description: "Stack Info: Stacked on #<parent-pr>"

5. Handle Conflicts

• Use gt sync (auto-synced repos)
• Use gt restack after modifications
• If conflicts: resolve manually, git add <resolved-files>, then gt restack --continue

6. Return PR URL

7. Addressing PR Feedback

Read feedback:

• Use /gh-pr-read skill for gh pr view and PR comments script

Navigate to branch:

gt ls                    # See stack position
gt checkout <branch>     # Jump to branch with feedback
# OR: gt up / gt down

Make changes and commit:

git add <specific-files>     # Stage ONLY relevant changes
gt modify                    # Amend + auto-restack children
gt submit                    # Push all affected branches

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STANDARD WORKFLOW (git + gh)

1. Branch Detection

• Check current branch: git branch --show-current
• Parent Branch Detection: Use git merge-base --is-ancestor to check if branched from main/master
• If parent is neither main/master, warn user and confirm the intended base branch for the PR

2. Stage and Commit

• Stage specific files: git add <file1> <file2> (NOT git add .)
• Create commit with descriptive message

3. Push Branch

• First attempt: git push or git push -u origin <branch-name>
• If conflicts, first verify it's safe to rebase:
  • gh pr view --json baseRefName — confirm PR targets main/master (NOT another branch)
  • If targeting another branch, this is a stacked PR — DO NOT rebase from master
• Only if PR targets main/master:
  • git fetch origin
  • git rebase origin/master
  • git push --force-with-lease

4. Create or Update PR

• Check existing: gh pr status or gh pr view
• Create: gh pr create --draft --title "<title>" --body "..."
• Update:
  1. Fetch current: gh pr view --json body -q '.body'
  2. Identify and preserve human-added content
  3. Update: gh pr edit --body "..."

5. Return PR URL

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CLI REFERENCE

Graphite:

gt create $USER/<name> -am "<msg>"   # Create branch + commit
gt modify                             # Amend staged changes
gt modify -c -m "<msg>"               # New commit
gt submit --draft --no-edit-title --no-edit-description  # Push and create PR
gt ss --draft --no-edit-title --no-edit-description      # Submit full stack
# Then set PR metadata: gh pr edit --title "..." --body "..."
gt sync                               # Sync with remote
gt restack                            # Rebase to maintain stack
gt ls                                 # Visualize stack
gt branch info                        # Show branch details

Standard:

git push -u origin <branch>           # Push with tracking
gh pr create --draft                  # Create draft PR
gh pr edit --body "..."               # Update PR description
gh pr view --json baseRefName         # Check PR base branch

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ERROR HANDLING

• No changes: Inform user, ask for clarification
• Graphite unavailable: Fall back to Standard Workflow
• Push conflicts: Check if standalone or stacked, use appropriate approach
• Wrong PR base (stacked): Fix with gh pr edit --base <parent-branch>

Return the PR URL after creation/update.

Context from User: $ARGUMENTS