Claude Code Source Analysis Series, Chapter 4: Context Management

Chapter 4 of the Claude Code Source Analysis Series | Context Management In the previous article, we looked at Claude Code's prompt runtime: on every turn, the outer system rebuilds the model request from system rules, project memory, dynamic context, tool descriptions, message history, and prior tool results. This chapter asks the next question: Once all of that keeps accumulating, how does Claude Code decide what to keep, what to compress, and what to leave out? People often reduce context man