Here’s how I use Claude Code, the ultimate AI coding tool, to implement new features in an existing complex codebase with many users. This is not a vibe coding tutorial building throwaway MVPs.This AI coding guide is for software developers who want to improve their daily AI coding workflows, maintain a clean production-grade codebase, and reduce bugs introduced by AI.I walk through my CLAUDE.md file containing AI coding rules, then implement a real feature from scratch, following a structured s...