## Summary

- Reuse the existing Zed clone activity indicator, which previously
showed only a static `Cloning <URL>` message.
- Add filesystem job updates so the existing indicator can change while
a job is running.
- Stream exact `git clone --progress` messages into that indicator
without maintaining a phase allowlist.
- Preserve the final Git stderr message when cloning fails.


https://github.com/user-attachments/assets/a9b8cbfd-b87f-4d83-a24b-992eb1c4de1f

## Testing

- `cargo test -p fs git_clone_progress::tests -- --nocapture`
- `CCACHE_DISABLE=1 ./script/clippy -p fs -p activity_indicator`
- Manually cloned a repository and verified live Git progress in the
activity indicator.

Release Notes:

- Improved repository cloning by showing live Git progress in the
activity indicator.