Create and Publish a GitHub Action in Typescript

A comprehensive step-by-step guide to building, testing, and publishing a custom GitHub Action using TypeScript. Covers the full lifecycle: setting up the project with TypeScript and @vercel/ncc, reading workflow inputs via @actions/core, integrating with GitHub's REST API via Octokit to auto-label pull requests, writing Jest unit tests, debugging with VS Code and ts-node, publishing to the GitHub Marketplace, and adding final DX improvements with Husky git hooks, ESLint, and Prettier.