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.
When messages are hidden due to /focus mode, the prompt now displays a count like "3 messages hidden (/focus to show)" to help users know when context has been abbreviated.
Evidence
New label format — search for "hidden (/focus to show)"
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
