🍌 [just] clarify just for Claude (#51)

* 🍌 [just] clarify just for Claude

* fixes for markdownlint

Author: chicks-net

CLAUDE.md

@@ -99,3 +99,5 @@ Run `just clean_readme` to strip template documentation from README.
 - PR checks poll every 5 seconds for faster feedback
 - Release notes for workflow changes are tracked in `.just/RELEASE_NOTES.md`
 - The `.just` directory contains modular just recipes that can be copied to other projects for updates
+- just catches errors from commands when the recipe isn't a "#!" form that runs another scripting engine
+- just colors come from built-in constants <https://just.systems/man/en/constants.html>