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.
/effort no longer surfaces a "Failed to set effort level: …" toast when the underlying user-settings write returns an error; the value is still applied via the in-memory app state.
Evidence
Effort command simplification (search for the removed "Failed to set effort level:" string).
Strings lifted out of the shipped bundle, so the claim above can be checked against them.