The /plan command now accepts a description argument to immediately start planning with context, instead of only supporting open.
Usage
/plan add authentication to the API
Evidence
Argument hint change from "[open]" to "[open|<description>]"
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agreeAdded optional description argument to /plan (e.g., /plan fix the auth bug) that enters plan mode and immediately starts
