Claude Code just got up to 3x faster at starting its replies, and part of the fix is a file-shrinking format from 1992 that your browser already uses on almost every web page you open. Here's the weird part. Every single time you hit enter, your laptop re-uploads the entire conversation to the AI from scratch. In a long session that can be a whole megabyte per message, and until recently none of it was compressed. AI models don't remember anything between messages. The conversation lives on…