Unified MR/PR workflow — detects git state, creates a branch if on main, commits with conventional format, pushes, and creates a GitLab merge request (glab) or GitHub pull request (gh) in one command. Auto-detects platform from remote URL. Use when user says /ship, "create MR", "create PR", "ship this", "merge request", "pull request", "push and create MR/PR", "wrap up", or is done with changes and wants to get them into review.
