[BUG] ultrareview crashes before producing findings — credits consumed but no results returned

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Two consecutive /ultrareview runs against the same branch crashed with:

Both runs were deducted from my free monthly quota (2 of 3 used) despite producing no findings.

Details:

• Scope: 20 files changed, 1503 insertions(+), 209 deletions(-)
• Branch: auth/simplify-tier-resolution diffed against main
• Session 1: https://claude.ai/code/session_01A8kogE6ZBurxwy6SD5prwX?from=cli
• Session 2: https://claude.ai/code/session_0117XjT6jPzSq8rqkwQaebqH?from=cli
• Date: 2026-05-15/16
• Platform: macOS (Darwin 25.4.0), Claude Code CLI via Remote

Control

Actual: Credit consumed, no findings returned. Crash happened both times on the same diff, suggesting a deterministic issue with the review input rather than a transient failure.

What Should Happen?

Review completes and returns findings, or credit is not consumed on crash.

Error Messages/Logs

{"error":"Review crashed before producing findings. See session logs
   for details."}

  Remote review completed
    ⎿  API Error: Server is temporarily limiting requests (not your usage limit) · Rate limited

Steps to Reproduce

Begin /ultrareview, it launches and an the error is received after some time.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.143

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_