docs(update-notes): v3.38.1 release notes

[hannesrudolph]

Summary

Adds v3.38.1 release notes and updates the 3.38 combined notes, index, and sidebar navigation.

Changes

• Add v3.38.1 patch release notes (with hero image)
• Add/update combined 3.38 release notes
• Update update-notes index and sidebar entries

Notes

Acknowledgements follow the exclusions in .roorules.

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Important

Adds v3.38.1 release notes, updates combined v3.38 notes, and modifies index and sidebar navigation.

• Release Notes:
  • Adds v3.38.1.mdx with patch release notes for v3.38.1, including QOL improvements and bug fixes.
  • Updates v3.38.mdx to include combined release notes for v3.38.
• Documentation Index:
  • Updates index.md to include links to v3.38.1 and combined v3.38 notes.
• Sidebar Navigation:
  • Updates sidebars.ts to include v3.38.1 and combined v3.38 in the sidebar.

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Project	Deployment	Review	Updated (UTC)
roo-code-docs	Ready	Preview, Comment	Dec 30, 2025 1:06am

[roomote]

Oroocle   See task on Roo Cloud

Reviewed the changes for v3.38.1 release notes, combined v3.38 notes, and index/sidebar updates; no issues flagged.

• No changes requested

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