<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
- **New Features**
- Introduced a document picker UI for embedding and selecting AFFiNE
documents, with improved search and recent document functionality.
- Added support for searching and fetching recently updated documents
within a workspace.
- Enhanced error handling for login and metadata validation during
document operations.
- Added ability to attach documents directly from the input box.
- **Improvements**
- Refined UI animations and layout behaviors for attachment and document
picker components.
- Updated attachment and header views for clearer pluralization and
display logic.
- Improved selection indicators and search experience in the document
picker.
- Enhanced delegate handling for user actions across input and
attachment components.
- **Bug Fixes**
- Fixed progress indicators and error alerts for failed document
operations.
- **Chores**
- Updated project configuration for improved build and signing
processes.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
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