feat: AI autocomplete [render preview]

[YousefED]

Summary

Adds support for AI AutoComplete

Rationale

This feature helps users to get automatic AI generated suggestions based on the current context.

Changes

• An API endpoint has been added here: https://github.com/TypeCellOS/BlockNote/pull/2191/files#diff-17c91c67f28aa1ed975bff4586bdbcd87164a3688342272b581ec712949d7d15
• The AI example has been extended here: https://github.com/TypeCellOS/BlockNote/pull/2191/files#diff-9ebfeb550917300e498ffaa17f4360d2a9a53b6e654ee6ed76ecbddeff1a7940
• The AutoComplete extension has been added: https://github.com/TypeCellOS/BlockNote/pull/2191/files#diff-1012946af8cf61494dcd571394754f8f3609299bdc700cf8901d09eba7958eaa

Impact

Testing

For now, only manual testing

Screenshots/Video

Demo: https://blocknote-git-feature-ai-autocomplete-typecell.vercel.app/ai/minimal

autocomplete.mp4

Checklist

• Code follows the project's coding standards.
• Unit tests covering the new feature have been added.
• All existing tests pass.
• The documentation has been updated to reflect the new feature

Additional Notes

Consider this an early draft, we're still working out the API and UX

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Project	Deployment	Preview	Updated (UTC)
blocknote	Ready	Preview	Nov 20, 2025 2:38pm
blocknote-website	Ready	Preview	Nov 20, 2025 2:38pm

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commit: 5f8a12c