Disable background tasks deterministically; drop debug artifact step#17
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Replace the --append-system-prompt instruction (which relied on the model following it) with CLAUDE_CODE_DISABLE_BACKGROUND_TASKS=1 on the action step, which removes background task capability entirely so all subagents run synchronously. Reported working in anthropics/claude-code-action#1462. Also remove the execution-log artifact upload that was added to debug the silent-review failure; it has served its purpose. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Summary
Cleanup after the silent-review investigation:
--append-system-promptworkaround (prompt-level, relies on the model complying) withCLAUDE_CODE_DISABLE_BACKGROUND_TASKS: '1'as a step-levelenvon the action. This removes background task capability from the session entirely, so subagents always run synchronously — the deterministic fix reported in anthropics/claude-code-action#1462.Upload Claude execution logdebug step added in Upload Claude review execution log as artifact #14; it served its purpose (it's how we found the root cause) and can be re-added if the workflow ever goes silent again.Note: this PR's own review run will be skipped by the action's workflow-file validation, as usual for PRs that modify the workflow. Verification happens on the first PR reviewed after merge.
Test plan
🤖 Generated with Claude Code