DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
The Bash tool help text now explicitly instructs the model to never prepend cd <current-directory> before commands, reducing unnecessary directory changes in generated commands.
Evidence
Bash tool help (search for "never prepend")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.