## Summary
The prerelease (snapshot) path of the release workflow fails immediately
whenever `main` carries an active `.changeset/pre.json` (i.e. during an
in-progress RC cycle, like the current v4 RC):
```
🦋 error Snapshot release is not allowed in pre mode
🦋 To resolve this exit the pre mode by running `changeset pre exit`
```
This blocks `chat-prerelease` snapshots from main even though the
snapshots are unrelated to the RC cycle.
Adds a conditional `changeset pre exit` step right before `Snapshot
version` in the prerelease job. The job runs on a checkout with
`persist-credentials: false`, so the `pre.json` deletion stays on the
runner's working tree — main's persisted pre-mode state is untouched,
and v4 RC publishes keep working normally.
## Test plan
- [ ] Re-run the `🦋 Changesets Release` workflow with `type=prerelease`,
`ref=main`, `prerelease_tag=chat-prerelease` and confirm it gets past
the snapshot step and publishes.
- [ ] Confirm `.changeset/pre.json` on `main` is unchanged after the
run.
Eric Allam
e825409f0e