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.
/plugin Command (Singular) Now Used in Error Messages
What's wrong with this entry?
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Error messages that previously said "Run /plugins to refresh the plugin cache" now say "Run /plugin to refresh the plugin cache" — matching the actual command name.
Evidence
Updated error string (search for "Run /plugin to refresh the plugin cache")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.