# Check for worktrees
WORKTREES=$(git worktree list --porcelain | grep -c "^worktree" || echo "0")
if [ "$WORKTREES" -le 1 ]; then
  echo "❌ No RALPH worktrees found"
  echo "Run /ralph-run first to create a worktree"
  exit 1
fi

# List available worktrees
echo "Available RALPH worktrees:"
git worktree list | grep "ralph/"

? Which worktree do you want to merge?
  ○ ralph/user-authentication (4 commits, 12 files)
  ○ ralph/payment-integration (2 commits, 5 files)
  ○ Cancel

╔════════════════════════════════════════════════════════════════╗
║                    Merge Preview                                ║
╚════════════════════════════════════════════════════════════════╝

Worktree: .worktrees/user-authentication
Branch: ralph/user-authentication
Target: main

Commits to merge: 4
  abc1234 feat: ST-001-1 - Create User type definitions
  def5678 feat: ST-001-2 - Create Zod validation schema
  ghi9012 feat: ST-001-3 - Create User service layer
  jkl3456 feat: ST-001-4 - Add unit tests

Files changed: 12
  src/types/user.ts (new)
  src/types/index.ts (modified)
  src/schemas/user.schema.ts (new)
  src/services/user.service.ts (new)
  ...

Diff stats:
  +342 lines added
  -12 lines removed

? Proceed with merge?
  ○ Yes, merge to main (Recommended)
  ○ Yes, squash merge (combine all commits)
  ○ No, review changes first (/ralph-review)
  ○ No, abandon changes (/ralph-discard)

# Save current branch
CURRENT=$(git rev-parse --abbrev-ref HEAD)

# Checkout main
git checkout main

# Merge worktree branch (--no-ff preserves history)
git merge ralph/{spec-name} --no-ff -m "feat: Implement {spec-name}

Merged from RALPH worktree:
- {summary of changes}

Stories completed:
- US-001: {title}
- US-002: {title}

Co-Authored-By: RALPH <noreply@anthropic.com>"

# Remove worktree
git worktree remove .worktrees/{spec-name} --force

# Delete branch
git branch -d ralph/{spec-name}

╔════════════════════════════════════════════════════════════════╗
║                    Merge Complete                               ║
╚════════════════════════════════════════════════════════════════╝

✓ Merged ralph/user-authentication into main
✓ Removed worktree: .worktrees/user-authentication
✓ Deleted branch: ralph/user-authentication

Commits merged: 4
Files changed: 12

Current branch: main

Next steps:
  - Run tests: npm test
  - Push to remote: git push origin main

git checkout main
git merge ralph/{spec-name} --squash
git commit -m "feat: Implement {spec-name}

Combined from 4 commits in RALPH worktree.

Changes:
- Created User type definitions
- Added Zod validation schema
- Implemented User service layer
- Added unit tests

Co-Authored-By: RALPH <noreply@anthropic.com>"

╔════════════════════════════════════════════════════════════════╗
║                    Merge Conflicts                              ║
╚════════════════════════════════════════════════════════════════╝

Conflicts in 2 files:
  ✗ src/types/index.ts
  ✗ src/services/auth.service.ts

Options:
  1. Resolve conflicts now (I'll help)
  2. Abort merge (keep worktree)
  3. Accept theirs (worktree version)
  4. Accept ours (main version)