[Bug] NameError in orchestrator error handler crashes Bug Hunter review on agent failure

Bug Description
Ran /code-review ultra 936 against PR stratis-technology/stratOS#936. The remote Bug Hunter review authenticated and started, then crashed after ~24s with 0 findings — and the root cause is in the orchestrator's own error handler, not the reviewed PR. A worker-agent subprocess exited 1, and the handler then threw: NameError: name 'stderr_lines' is not defined. Did you mean: 'stderr_file'? at bughunter/orchestrator.py:4536 That undefined-variable bug turned a recoverable agent failure into a fatal crash, aborting the whole run (all 5 agents cancelled, exit 1). It counted as "Free ultrareview 1 of 3" despite delivering nothing — requesting that credit be refunded. Cloud session: session_01VAa8bsC2U3rehymxdqGybw.

Environment Info

• Platform: darwin
• Terminal: vscode
• Version: 2.1.163
• Feedback ID: 0af4c12f-d6fb-4d75-9f1b-2752578a683a

Errors

[{"error":"Error: CreateSession 400: {\"error\":{\"message\":\"GitHub repository access check failed — re-authorize GitHub in settings\",\"reason\":\"github_repo_access_denied\",\"type\":\"invalid_request_error\"},\"request_id\":\"req_011CbkbMvjUjfjx3zMdMzuPv\",\"type\":\"error\"}\n    at Wn (/$bunfs/root/src/entrypoints/cli.js:3898:3312)\n    at async uKq (/$bunfs/root/src/entrypoints/cli.js:8517:715)\n    at async bh3 (/$bunfs/root/src/entrypoints/cli.js:8607:51)\n    at async <anonymous> (/$bunfs/root/src/entrypoints/cli.js:8609:402)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-06-05T18:33:43.564Z"}]