Feature Request: Support concurrent executions across different git worktrees

[binc4t]

I tried to run Claude concurrently using git worktree, but ran into an error.

Reproduction Steps

1. Run an RLCR loop via Claude on branch feat-1.
2. Create a new worktree: git worktree add -f /tmp/xx-feat-2 feat-2
3. Attempt to run Claude in the new worktree, which failed with the following error

Branch switching is not allowed during an active RLCR loop. Please switch back to the original branch or cancel the loop with /humanize:cancel-rlcr-loop

Expected Behavior

Since git worktree creates isolated workspaces, multiple instances of Claude should be able to run concurrently.

[binc4t]

It's an occasional issue that I can't reliably reproduce.

[Buyi-wsgzg]

This is expected behavior if the second worktree is started from the same Claude/Codex session that already owns an active RLCR loop.

RLCR currently treats the active loop as bound to the session and its starting branch, so switching to another branch/worktree inside that same session triggers the branch-switch guard.

Recommended workflow:

1. Create one git worktree per RLCR task.
2. Use a distinct branch per worktree.
3. Start a fresh Claude/Codex session in each worktree.
4. Run setup-rlcr-loop.sh from inside that worktree.

So yes, parallel RLCR should work with worktrees, but not by reusing the same active RLCR session across worktrees.