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 interactive /stop hook command for setting session-only stopping conditions has been removed. The underlying stop hook system still functions (hooks configured via other means continue to work), but the interactive prompt-based UI for creating them is gone.
Evidence
Removed kF7 stop hook editor component and zR1 command handler from old version
Strings lifted out of the shipped bundle, so the claim above can be checked against them.