CodeRabbit trial verdict review

[hadamrd]

Purpose\n\nReview the 4-week CodeRabbit trial for forge-loop after the trial window ending July 1, 2026.\n\n## Measurement template\n\n- Count of CodeRabbit findings the manifesto-aware critic missed:\n- Count of noise or duplicate-with-ruff findings:\n- Overlap with manifesto rules:\n\n## Decision\n\n- Retain CodeRabbit and harvest recurring bug classes into the manifesto, or\n- Drop CodeRabbit if it duplicates existing review too much.\n\n## Related\n\nFollow-up for #159.

[hadamrd]

Closing with the CodeRabbit trial. There is no four-week trial to review because the enabling PR was closed for depending on manual GitHub App installation and manual smoke checks.