jjk caused a lot of problems for me when using multiple agents. It's running some sort of jj command that snap-shotted stuff and caused divergence (might have benefited from `--ignore-working-copy`). Not sure what the precise details were, but I gave up and uninstalled it after a week.
Multiple agents is definitely tempting fate. Concurrent modification of the same git repo by multiple entities?
At that point you should use multiple repos so they can merge & resolve.
EDIT: of course, if a single agent uses git to modify a repo instead of jj, jj may have trouble understanding what's happened. You could compare it to using an app that uses an sqlite db, and then also editing that db by hand.
The point of jj is that it supports lockless concurrent writes to the same repo out of the box. It is what makes it a lot more suitable than git for agent workflows
The OP is talking about the `jj workspace create` command, which creates a separate working copy backed by the same repository. It’s not a bad way to work with multiple agents, but you do have to learn what to do about workspace divergence.
Even with multiple workspaces (like git worktrees), once you use something like jjk, both the agent and jjk in the associated VS Code are operating on the same workspace, so that doesn't isolate enough. I don't think jjk uses `--ignore-working-copy` for read-only status updates, so it's snapshotting every time it checks the repo status while the agent is editing.
On top of that, throw in whatever Claude does if you "rewind" a conversation that also "reverts" the code, and agents wrongly deciding to work on code outside their focus area.
It's possible watchman helps (I need to look into that), but I'm so rarely using jj in VS Code (all I really want is inline blame), that it was easier to remove jjk than try to debug it all.
Divergence won't hide or lose any work, but it's an annoying time-suck to straighten out.
