wtf is ai-context-library?

This repository, called Daitoshokan, which means The Great Library in Japanese, is a way to give an AI assistant a memory that survives between conversations. It is not a piece of software you install and run. It is just a set of plain Markdown text files, organized in a particular structure, that you copy into your own project folder. The problem it solves is one many people run into when working with AI chat tools: every new conversation starts from zero, so you keep re-explaining who you are, what you are working on, and what you already decided. Long conversations can also degrade in quality as they get longer, a known issue sometimes called context rot. Daitoshokan addresses this with three layers of files. A catalog file is the only one read every time, and it points the AI to the right shelf file for the current task. Shelf files hold organized knowledge by topic, such as work or preferences. A journal folder holds short daily entries logging what was done, and periodically the AI files those entries into the shelves, and can later condense a full year into one summary page called a yearbook. You set it up by copying a library folder into your working directory, and if you use Claude Code, adding a short snippet to your CLAUDE.md file so the AI automatically checks the catalog before starting new work. The README also gives a ready made prompt you can paste into an AI agent to have it fetch, install, and customize the whole system for you, asking you a few questions about what you use AI for along the way. The same files work with other AI tools too, such as ChatGPT, though the automatic file reading behavior works best with tools that can read files on their own. The author describes themselves as a non-engineer who started building with AI tools and got frustrated by having to repeat context constantly, and built this as a simple, repeatable routine rather than a clever piece of code. No programming knowledge is needed to use it, since everything is written in ordinary Markdown text.