ultrareview fails with Firestore 'file not found' error

Description

Running /ultrareview consistently fails with the following error:

Ultrareview could not start the remote session: seed bundle: seed bundle import: failed to import files: error executing request: file not found: {"code":"not_found","message":"file to import not found: error retrieving file to import: firestore: not found"}

Steps to reproduce / sequence of events

1. First attempt: ran /ultrareview with a large database dump file (~untracked) present in the repo directory. Failed with the error above.
2. Moved the dump file out of the repo directory (based on a suggestion that large files might be causing the issue).
3. Second attempt: ran /ultrareview again with a clean repo state (branch up to date with origin/main, only a few small untracked files remaining). Failed with the identical error.

The two failures look identical, suggesting the same root cause. However, it's possible the first attempt partially registered files with Firestore (including the now-missing dump file), and the second attempt failed trying to retrieve that stale registration. The Anthropic team would be best placed to determine whether the first failed attempt left any partial Firestore state.

Environment

• Repo state on second attempt: clean (modified doc, two small untracked files — a markdown file and a PNG)
• Error is reproducible across multiple attempts with different repo states

Expected behavior

Ultrareview should start a remote review session.

Actual behavior

Remote session fails during seed bundle import due to a Firestore lookup error.