Prepare a quick guide to this type of project

この issue には説明がありません。

No files, tests, or entry points are identified, and the issue body is empty. Start by reviewing the repository structure and existing project description to determine what “this type of project” refers to. Done should be a focused quick guide with a defined audience and scope, but those requirements need clarification first.

索引モデルが issue の本文から書いたものです。