Stop copy-pasting project context: 4 stages of CLAUDE.md evolution

The piece explains how CLAUDE.md should grow with a project instead of staying a static note.

It outlines four stages: a minimal prototype file, an MVP version that records architecture and rejected options, a production rulebook with standards and hard bans, and a later enterprise harness for broader operations.

The goal is to reduce repeated context-pasting and keep AI-assisted coding aligned with current decisions.

Keeping CLAUDE.md updated helps prevent outdated or unsafe guidance from lingering as the codebase matures.