### TL;DR
For canvas elements, this PR adds placeholders during zooming operations to improve performance.

### What changed?
- Implemented placeholder rendering during zooming operations in the canvas renderer, but not only DOM.
- Added a `forceFullRender` property to the `GfxCompatibleInterface` to allow elements to opt out of placeholder rendering
- Set `forceFullRender = true` for connectors to ensure they always render properly, even during zooming
- Connected the turbo renderer to the viewport's zooming state to automatically switch between full and placeholder rendering
### Why make this change?
Rendering complex elements during zooming operations can cause performance issues and make the UI feel sluggish. Rendering connector label also leads to high cost DOM `set font` delays.

The turbo renderer improves performance by displaying simple placeholders for elements during zooming, while still rendering critical elements like connectors fully. This creates a smoother user experience while maintaining essential visual information.
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced a feature-flag-controlled "turbo" rendering mode that displays placeholder graphics during zooming for improved performance.
- Added the ability to override placeholder rendering for specific elements, ensuring full rendering when required.
- **Bug Fixes**
- Enhanced rendering logic to ensure connectors always render fully, even during zoom operations.
- **Documentation**
- Updated API documentation to reflect new properties related to rendering behavior.
- **Tests**
- Improved tests to verify correct rendering behavior for connectors.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: BS-3364
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced a new "Page Dragging Area" widget, enabling enhanced block selection and drag area detection within the user interface.
- Added utilities for more precise block selection based on rectangular selection areas.
- **Improvements**
- Integrated the new widget into the view extension system for consistent behavior across supported views.
- Enhanced clipboard handling with comprehensive adapter configurations for various data types.
- **Refactor**
- Streamlined widget registration and block selection logic for improved maintainability and modularity.
- Removed legacy widget exports and registrations to centralize widget management.
- **Chores**
- Updated workspace and TypeScript configurations to support the new widget module.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: [BS-3143](https://linear.app/affine-design/issue/BS-3143/更新-attachment-错误样式)
Closes: [BS-3341](https://linear.app/affine-design/issue/BS-3341/attachment-select状态ui调整)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Improved attachment block with unified reactive state handling for loading, errors, and downloads.
- Enhanced card layouts with modular rendering and dynamic buttons based on state.
- **Bug Fixes**
- Fixed UI state for "Embed view" action, now correctly disabled when not embedded.
- Resolved attachment card styling issues and text overflow with new utility classes.
- **Refactor**
- Streamlined attachment block rendering and state management for better performance and maintainability.
- Updated toolbar configuration for consistent parameter naming.
- Simplified embedded and open methods for improved clarity.
- Made internal functions private to reduce exported API surface.
- **Chores**
- Removed unused icon export and legacy upload tracking functions.
- Updated attachment utilities to use reactive state, added data refresh, and improved error handling.
- Refined image dimension handling for consistent resizing behavior.
- Improved test selectors to target focused attachment containers for better reliability.
- Refactored CSS to separate container and card styling and adopt theme-based colors consistently.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Enhanced clipboard support with multiple adapter configurations for various MIME types, improving clipboard handling and compatibility.
- **Refactor**
- Relocated clipboard adapter configurations to a new location for better organization and maintainability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: BS-3360
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced a new viewport overlay widget, making it available as part of the workspace and enabling its integration into supported pages.
- **Refactor**
- Updated internal imports and exports to utilize the new viewport overlay widget package.
- Streamlined widget registration and extension mechanisms for improved modularity.
- **Chores**
- Added configuration and project references to support the new viewport overlay widget package in the build system.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Close [BS-3357](https://linear.app/affine-design/issue/BS-3357/duplicate-note-注意设置z轴的数据)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Duplicating an edgeless note now ensures the new note appears above other elements in the stacking order.
- **Tests**
- Added a test to verify that duplicated edgeless notes are rendered above existing elements.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: [BS-3303](https://linear.app/affine-design/issue/BS-3303/改進-pack-attachment-props-流程)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Enhanced attachment and image uploads with improved file size validation and clearer notifications.
- Upload telemetry tracking added for attachments to monitor upload success or failure.
- **Refactor**
- Streamlined and unified the process of adding attachments and images, making uploads more reliable and efficient.
- Parameter names updated for clarity across attachment and image insertion features.
- **Documentation**
- Updated API documentation to reflect parameter name changes for consistency.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced the Affine Foundation package, providing a centralized layer for initializing core UI effects, custom elements, and foundational services.
- Added new foundational store and view extensions to improve core service registration and UI effect setup.
- **Refactor**
- Streamlined and reorganized block, store, and view extension arrays to rely on the new foundation layer, reducing duplication and simplifying extension management.
- Removed redundant or now-centralized services and UI effects from existing modules.
- **Chores**
- Updated configuration files and workspace dependencies to support the new Affine Foundation package.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **Refactor**
- Updated and reorganized import paths for transcription block models and types to improve module structure and maintainability.
- **Chores**
- Removed deprecated transcription block schema and related exports from core libraries.
- Registered transcription block schema directly within the workspace schema for improved schema management.
- **Bug Fixes**
- Ensured consistent registration and availability of transcription block features across relevant modules.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced a new pointer graphics module with tools and quick tool integration for edgeless surfaces.
- Added a quick tool button for pointer interactions in edgeless mode.
- Exposed new extension points for pointer graphics and effects.
- **Improvements**
- Integrated pointer graphics as a dependency into related packages.
- Enhanced toolbar context to support additional surface alignment modes.
- Added conditional clipboard configuration registrations for edgeless contexts across multiple block types.
- **Removals**
- Removed legacy tool and effect definitions and related quick tool exports from edgeless components.
- Streamlined extension arrays and removed unused exports for a cleaner codebase.
- Deleted obsolete utility functions and component registrations.
- **Chores**
- Updated workspace and TypeScript project references to include the new pointer graphics module.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: BS-3226
Closes: BS-3227
Closes: BS-3228
Closes: BS-3229
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced new view extensions for remote selection, scroll anchoring, slash menu, and toolbar widgets, enhancing customization and integration capabilities.
- **Refactor**
- Updated export paths and module structure for widget-related packages to improve modularity and accessibility.
- Reorganized internal dependencies and removed redundant widget imports from core block packages.
- Refactored edgeless-related widgets and components to use a standardized scope interface for improved context and state management.
- Centralized graphics controller access and slot management through standardized context objects.
- **Chores**
- Added and updated dependencies to streamline extension loading and workspace management.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: BS-3223
Closes: BS-3224
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced new view extensions for frame title and keyboard toolbar widgets with conditional registration based on context and environment.
- Enhanced widget integration by adding explicit exports for view components.
- **Chores**
- Updated export paths and package dependencies to improve modularity and compatibility.
- Removed deprecated widget dependencies and related imports from core packages.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: BS-3221
Closes: BS-3222
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced extensions that conditionally register edgeless auto-connect and toolbar widgets with associated effects based on the view context.
- Added new exports for edgeless auto-connect and toolbar widget views, making them available for external use.
- **Chores**
- Updated dependencies and project references to include the extension loader for improved module integration.
- Refined workspace configuration to reflect new package dependencies.
- **Refactor**
- Streamlined registration and effect logic by removing legacy integration points for edgeless auto-connect and toolbar widgets.
- Reorganized widget export paths to a more modular directory structure.
- **Bug Fixes**
- Disabled pointer events on the edgeless navigator black background to prevent interaction interference.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: [BS-3302](https://linear.app/affine-design/issue/BS-3302/處理-affine-中的-redos-風險)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **Bug Fixes**
- Improved handling of footnote definitions with varied spacing, special characters, and malformed or incomplete entries, ensuring more reliable processing and display.
- **New Features**
- Introduced advanced parsing for footnote URLs to improve accuracy and validation of footnote content.
- **Tests**
- Expanded test coverage for footnote processing to include additional edge cases and mixed content scenarios, enhancing overall robustness.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: [BS-3113](https://linear.app/affine-design/issue/BS-3113/footnote-popup-ui-更新)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Added a description display below the chip in the footnote popup when available.
- **Style**
- Improved the appearance of footnote popups with enhanced border radius, padding, and layout.
- Updated font styling for labels and descriptions.
- Simplified chip styling by reducing height and removing unnecessary CSS properties.
- **Bug Fixes**
- Tooltip content for URL references now displays both the link preview title and URL when available.
- **Refactor**
- Simplified click handling by attaching it to the container instead of individual elements.
- Removed unused click event properties from the footnote popup chip.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Images and icons in bookmark cards are now loaded through an image proxy for improved reliability and consistency.
- Embed blocks for GitHub, Loom, and YouTube now display banner and creator images via an image proxy service for enhanced image loading.
- **Refactor**
- Simplified backend URL handling and proxy logic for images, resulting in more efficient processing and reduced complexity.
- Consolidated image proxy middleware and services into a shared adapter module for streamlined imports and improved maintainability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **Chores**
- Updated package dependencies to reduce the number of direct dependencies for improved maintainability. No changes to user-facing features or functionality.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: BS-3208
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced a new group view extension, enhancing how group elements are handled and displayed.
- Added new store and view modules for group-related features, improving modularity and integration.
- **Refactor**
- Updated the group element architecture to use extension-based registration for views, toolbars, and effects.
- Simplified and reorganized exports for group and text modules.
- **Chores**
- Updated dependencies and project references to improve build consistency and compatibility.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Fixed compat error for new built-in template with test updated.

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Added an option to enable or disable bitmap rendering in the renderer settings.
- Introduced a cooldown period after zooming before block optimization resumes, improving rendering performance and stability.
- **Bug Fixes**
- Improved handling of cases where block components may be missing, preventing potential runtime errors.
- **Tests**
- Expanded and refined tests to verify zooming behavior, bitmap caching, and internal state transitions for enhanced reliability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: BS-3209
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced mind map view and store extensions, enhancing mind map integration and conversion to plain text and markdown formats.
- Added priority property to quick tools, allowing for custom ordering in the toolbar.
- **Improvements**
- Toolbar quick tools are now sorted by priority for a more intuitive user experience.
- Updated toolbar and extension configurations to streamline available tools and extensions.
- **Bug Fixes**
- Conditional registration of certain components ensures correct behavior in edgeless mode.
- **Chores**
- Updated dependencies and project references to improve module integration and maintainability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: BS-3206
Closes: BS-3210
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced new brush and note view extensions, enhancing integration and extensibility for brush and note tools.
- Added store extension for brush tools, allowing for improved adapter integration.
- **Improvements**
- Expanded module exports for brush and note graphics, making store and view functionalities more accessible.
- Added new dependencies to support extension loading and improved project structure.
- **Refactor**
- Updated extension arrays and toolbars to use the new view and store extensions for brush and note tools.
- Removed legacy brush and note tools, effects, and toolbar extensions in favor of the new extension-based approach.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: [BS-3272](https://linear.app/affine-design/issue/BS-3272/footnote-适配-exa-api-返回结果)
## What's Changed
Add link preview data support (favicon, title, description) for URL references in footnotes:
- Store and display URL preview data in footnotes
- Add encoding/decoding support for favicon URLs
- Optimize link preview by using existing preview data when available
### What Changes
- Refactors the `notify` function call with undo button. It is called `notifyWithUndo`, which can associate the visibility of the `NotificationCard` with the top undo item in history stack, such as undo by shortcut `Cmd+Z`.
- change icon of the "Insert into page" button. Close [BS-3267](https://linear.app/affine-design/issue/BS-3267/frame和group的insert-into-page图标也更换一下)
### TL;DR
Prevent pasting content when a document is in readonly mode.
### What changed?
Added a check in the `PageClipboard` class to prevent pasting operations when the document is in readonly mode. The function now returns early if `this.std.store.readonly` is true, preventing any clipboard operations from being executed.
### How to test?
1. Open a document and add some content
2. Set the document to readonly mode: `document.querySelector('affine-page-root')!.doc.readonly = true`
3. Try to paste content into the document using:
- Regular paste operation
- Keyboard shortcut (Ctrl+V/Cmd+V)
4. Verify that no content is pasted and the document remains unchanged
5. Set the document back to editable mode and confirm pasting works again
### Why make this change?
This change ensures that documents in readonly mode maintain their integrity by preventing unintended modifications through clipboard operations. This is consistent with the expected behavior of readonly documents, where users should not be able to modify content through any means.
### TL;DR
Refactored extension registration to follow a more modular approach by moving extensions to their respective block packages.
### What changed?
- Removed centralized registration of several extensions from `store.ts` in the main package
- Moved the following extensions to their respective block packages:
- `CodeMarkdownPreprocessorExtension` to the code block package
- `LatexMarkdownPreprocessorExtension` to the latex block package
- `EmbedIframeConfigExtensions` and `EmbedIframeService` to the embed block package
- `ImageStoreSpec` removed from central registration
- Cleaned up unused arrays and imports in the main store file
- Removed empty `defaultBlockPlainTextAdapterMatchers` array
### How to test?
1. Verify that markdown preprocessing for code and latex blocks still works correctly
2. Check that iframe embeds function properly
3. Ensure image handling continues to work as expected
4. Test import/export functionality for all affected block types
### Why make this change?
This change improves code organization by following a more modular architecture where each block package is responsible for registering its own extensions. This approach reduces coupling between packages, makes the codebase more maintainable, and follows the principle that extensions should be registered where they are defined.