Exercise 1 — Solution

Task: A new instruction says: "Whenever generating a chart, use a
colorblind-safe palette." Using this chapter's own test, decide which
CLAUDE.md file it belongs in, and explain your reasoning.

Applying the chapter's own test - "would this instruction still make
sense if pasted into a completely different, unrelated project?" - the
answer here is clearly yes. Choosing a colorblind-safe palette when
generating a chart has nothing to do with this specific website's own
folder structure, its course-content conventions, or anything else
unique to this repository. It's a general habit about HOW charts get
made, applicable identically whether the current project is this
learning-blog website, an unrelated Node.js API, or anything else.

This belongs in the global ~/.claude/CLAUDE.md file, alongside the
other cross-project preferences already there (explanation style for
corrections, prompting-style feedback, the utility-scripts folder
location, the "conversation" command).

Notes:
- The key signal is that the instruction describes a general practice
  ("how to make a chart well"), not a fact specific to this codebase
  ("where course chapters get saved").
- If this same instruction had instead said "use this project's own
  established color palette (accent colors already documented per
  language/course)," that version WOULD belong in the project file
  instead, since it directly references this project's own specific,
  already-established conventions.