<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Footnote definitions and "Sources" headings are now always included in notes, without requiring a feature flag.
- Enhanced footnote-related content with additional citation-style blocks such as bookmarks, embedded documents, and attachments.
- **Chores**
- Removed the citation feature flag and its related configuration, logic, and translations from the application.
- **Documentation**
- Updated localization files to remove entries related to the citation experimental feature.
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Closes: BS-3393
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced a new "Embed Doc" block, enabling embedding and rendering of linked and synced documents within cards, including support for banners and note previews.
- Added new toolbar and quick search options for inserting embedded linked and synced documents.
- **Improvements**
- Updated dependencies and internal references to support the new embed doc functionality across related blocks and components.
- Enhanced support for edgeless environments with new clipboard and configuration options for embedded docs.
- **Refactor**
- Streamlined and reorganized embed-related code, moving linked and synced doc logic into a dedicated embed doc module.
- Removed obsolete adapter and utility files to simplify maintenance.
- **Chores**
- Updated project and TypeScript configuration files to include the new embed doc module in builds and references.
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