The One File That Makes Claude Code Sessions Actually Persistent

Every Claude Code session ends the same way: context window fills up, session compresses, and your AI forgets what it was doing. I fixed this with one file. The Problem Claude Code has no persistent memory between sessions. When you start a new terminal, it reads your CLAUDE.md and starts fresh. Any decisions made, approaches tried, or context built up - gone. For a single quick task, this is fine. For multi-day projects with complex state, it's a disaster.