Preview Deployments with Firebase Hosting & GitHub Actions

When I briefly worked with Peec AI, one of the first things I noticed that could greatly improve the developer experience was adding preview deployments to their toolbox. They already had code reviews, but the process felt incomplete without being able to click around a real, live version of the actual changes. This becomes even more critical in the age of vibe coding. Why Preview Deployments Matter If you've used Vercel or Netlify, you know this experience is built-in. Every pull request gets deployed to a separate environment, ideally with its own subdomain, so the result of the code changes can be showcased easily. For growing teams, the benefits compound quickly: Visual verification — Catch UI bugs that diffs can never reveal Faster feedback loops — Designers and PMs can review without setting up the project locally AI agent workflows — When an agent like Cursor opens a PR, a human can visually verify the result before approving Parallel development — Multiple PRs can be live simul