Fixes [BS-3349](https://linear.app/affine-design/issue/BS-3349/)
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## Summary by CodeRabbit
- **New Features**
- Improved edge scrolling during selection dragging for smoother and more responsive viewport navigation.
- Dragging area and mouse position tracking now update reactively with viewport changes, ensuring more accurate selection and movement.
- **Refactor**
- Unified and clarified coordinate handling for dragging and mouse position, with clearer naming and separation between model and browser coordinates.
- Simplified selection logic and removed unnecessary accumulated state for cleaner and more maintainable behavior.
- Enhanced flexibility in coordinate conversion by allowing viewport transformations relative to arbitrary zoom and center.
- Streamlined clipboard paste handling by simplifying mouse position extraction and adjusting attachment options.
- **Bug Fixes**
- Enhanced overlay and dragging area accuracy by updating position calculations and coordinate transformations.
- Fixed paste operations to correctly handle mouse position without unnecessary coordinate conversions.
- Corrected drag initiation positions in toolbar and shape dragging to align with viewport-relative coordinates.
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<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **Chores**
- Removed multiple internal export entries related to effects modules across various packages.
- Updated dependencies and configuration references to improve internal consistency. No visible changes for end-users.
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<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced two new widgets: Edgeless Dragging Area and Note Slicer, now available for use.
- Added extension support for these widgets, enabling enhanced interaction and integration within the application.
- **Chores**
- Updated package configurations and workspace settings to include the new widgets and their dependencies.
- Added project references and configuration files to support modular development and build processes.
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