ultrareview: remote task completes with empty output, findings never delivered, free review consumed

Bug

An ultrareview (/code-review ultra via the deprecated /ultrareview alias) launched successfully, consumed Free ultrareview 2 of 3, and its remote task later reported completed successfully — but no findings were ever delivered.

Evidence

• Launch stdout: Ultrareview launched for refactor/tooling-simplification → main (~5-10 min, runs in the cloud) — scope 5 files, 112 insertions, 481 deletions; tracked session: https://claude.ai/code/session_01RxyHS3TDnUbpggHLBgMsd2?from=cli
• Completion task-notification for remote task r5puw9cn1 arrived with status completed, but the referenced output file exists and is empty (0 bytes).
• TaskOutput/TaskStop on r5puw9cn1 both return No task found with ID immediately after the completion notification.
• No follow-up notification with findings ever arrived.

Expected

Findings (or an explicit "no findings" result) delivered to the CLI session, or on failure an error status that does not consume a free review.

Requested

The run consumed one of the account's three free ultrareviews without delivering any output — please don't count this use.

Environment

• Claude Code CLI, darwin (macOS, Darwin 25.6.0), model claude-fable-5
• Repo under review: private GitHub repo, branch diff refactor/tooling-simplification → main (no GitHub PR; local-branch bundle form)

🤖 Filed by Claude Code on the user's behalf