josh/create-pr v1.0.0

Push the current branch and create a pull request with a conventional commit title, summary, and optional test plan. Use this skill for ALL pull request operations — creating PRs, pushing branches for review, opening merge requests, submitting code for review, or any workflow that ends with a PR on GitHub. Trigger on any mention of creating a PR, opening a pull request, pushing for review, submitting changes, "make a PR", "open a PR", "push and create PR", "send this for review", or preparing a branch for merge. Also trigger when the user says "PR this", "ship it", "send it up", or asks to get their changes reviewed.