The festive season is here, so I vibe-coded a full-stack Secret Santa app from scratch in one session—setup, features, and deployment. I show you why I prefer this workflow over platforms like Bolt or Lovable: just use a real editor (I use Cursor) or the Claude Code CLI/extension, keep everything in your repo, and ship like you would on a real product. I run Opus 4.5 as my coding agent, start from my free agentic app boilerplate, and then plan the entire build inside the IDE before writing code. From there I walk through the full workflow: generating a proper requirements + phased implementation plan, managing the context window (this matters a lot), and using checkpoints/commits so you can always roll back. I push to GitHub early, then I use a workflow I’ve been enjoying recently—publishing the plan into GitHub Issues + a project board, and letting Claude Code implement phase-by-phase while automatically updating issue status. On the build side, we use Next.js, Postgres (Docker locally, Neon in prod), BetterAuth with Google OAuth, and OpenRouter via the Vercel AI SDK for AI gift suggestions. I also show how I test the app end-to-end, do an AI-assisted code review, generate public-facing docs, and deploy to Vercel. And yes—we hit real bugs (budgets, routing, LLM prompt quality) and I show you exactly how I feed those back to the agent to fix properly.