Release v7.90.0

Added

• Corpus verification now fails when the rules a harness loads on every turn exceed that harness's always-on budget, and tells the author to displace or demote existing guidance or raise the budget in a reviewed change. New rules must name how they are enforced. (#412)
• cratis-engineering-regression-cluster skill for a surface that keeps breaking: find the shared cause and make one structural change instead of another fix round. (#412)

Fixed

• The project-specific context guidance in general.md no longer names repository-owned documentation as both the canonical context and its fallback; it now matches rules/project.md. (#801)