Sonnet + WebSearch reviews each PR between generation and schema
steps. Returns [NO_ERRORS] or [CORRECTED] with change log; rewrites
that shift word count by more than 15% are rejected. Fact-check
failures are graceful -- PR still ships with a ClickUp note that
manual review is recommended. Wired into both the legacy pipeline
and the headless clickup_runner.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>