You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Plan ModeArea: what it touches
RemovedKind: in v2.1.312,
RemovedSection of the release
What
In plan mode, Claude Code saves the plan to a file named after the plan, ending in .md. Before, a second file with the same name ending in .workshop.md was handled alongside it. That companion file is no longer handled:
Forking and resuming: forking a session (starting a new session that branches off an existing one) or resuming one (picking an earlier session back up) copies only the plan's .md file.
Recognising plans: the .workshop.md file no longer counts as part of a plan.
Listing and naming: plan listings, and the check that stops two plans getting the same name, look only at the .md file.
The parts of Claude Code that watch plan files for changes were also reworked.
Why
If you relied on a .workshop.md file next to a plan, it will no longer follow the plan into a forked or resumed session.