Add config schema review rule documentation

[sestinj]

This happened for basePlanSystemMessage, which isn't that big a deal but just thought this might be an interesting PR review rule. Wouldn't be triggered super often

[netlify]

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[github-actions]

⚠️ Conventional Commit Format

Your commit messages don't follow the conventional commit format, but this won't block your PR from being merged. We recommend downloading this extension if you are using VS Code.

Expected Format:

<type>[optional scope]: <description>

[optional body]

[optional footer(s)]

Examples:

• feat: add changelog generation support
• fix: resolve login redirect issue
• docs: update README with new instructions
• chore: update dependencies

Valid Types:

feat, fix, docs, style, refactor, perf, test, build, ci, chore, revert

This helps with:

• 📝 Automatic changelog generation
• 🚀 Automated semantic versioning
• 📊 Better project history tracking

This is a non-blocking warning - your PR can still be merged without fixing this.

[cubic-dev-ai]

cubic reviewed 1 file and found no issues. Review PR in cubic.dev.