Stabilize protocol schema fixture generation

[aibrahim-oai]

What changed

• TypeScript schema fixture generation now goes through in-memory tree helpers rather than a heavier on-disk generation path.
• The comparison logic normalizes generated banner and path differences that are not semantically relevant to the exported schema.
• TypeScript and JSON fixture coverage are split into separate tests, and the expensive schema-export tests are serialized in nextest.

Why this fixes the flake

• The original fixture coverage mixed several heavy codegen paths into one monolithic test and then compared generated output that included incidental banner/path differences.
• On Windows CI, that combination created both runtime pressure and output variance unrelated to the schema shapes we actually care about.
• Splitting the coverage isolates failures by format, in-memory generation reduces filesystem churn, normalization strips generator noise, and serializing the heavy tests removes parallel resource contention.

Scope

• Production helper change plus test changes.

[aibrahim-oai]

@codex review this

[chatgpt-codex-connector]

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[aibrahim-oai]

@codex review this

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: cd1bf5a2fe

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[aibrahim-oai]

@codex review this

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Bravo.

ℹ️ About Codex in GitHub

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