I Stopped Claude Code From Breaking My Projects. Here's the Exact Setup

A practical guide to anti-regression AI coding with Claude Code, subagents, hooks, and Google Antigravity — from someone who was ready to quit. Six months ago, my workflow with Claude Code looked like this: build a working prototype in an hour, spend the next three hours watching Claude systematically destroy it while "improving" things. Every developer using AI coding agents knows this pattern. You ask for a small change, and suddenly your auth module is rewritten, three tests are deleted, and there's a new dependency you never asked for. I'm a full stack developer running my own company (CREATMAN), and I code solo most of the time. I can't afford to babysit an AI agent on every keystroke. I needed a setup where Claude Code would help me ship faster without regressing what already works. After weeks of research, community deep-dives, and a lot of trial and error, I found a combination that actually works. This article is everything I learned — the tools, the config files, and the exac