markdown: normalize ordered list markers

[maxbuchan]

Key Info

• Implementation plan: link
• Priority: normal

What changed?

Problem: Ordered lists rendered as “1., 1., 1.”. Our custom CSS-counter list implementation in markdownComponents reset the counter per item, and CommonMark doesn’t treat “1)” as an ordered list marker.

With whatever fix we ended up moving forward with here, we should also apply this fix to the design system because this issue is present in Codex as well (check AI Response section in slide)

• Added a minimal pre-parse normalization that converts leading “N) ” → “N. ” before rendering so model output is recognized as an ordered list.

Before:

After:

What do you want the reviewer(s) to focus on?

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Checklist

• Did you link the GitHub issue?
• Did you follow deployment steps or bump the version if needed?
• Did you add/update tests?
• What QA did you do?
  • Tested...