Closes: [BS-3438](https://linear.app/affine-design/issue/BS-3438/attachment-embed-view-中的-status-组件)
Closes: [BS-3447](https://linear.app/affine-design/issue/BS-3447/触发-litportal-re-render)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced a visual status indicator for embedded attachments with reload capability.
- Added a new resource status component to display error messages and reload actions.
- **Improvements**
- Enhanced attachment rendering flow with reactive state and unified embed handling.
- Simplified resource state and blob URL lifecycle management.
- Added status visibility flags for PDF and video embeds.
- **Bug Fixes**
- Improved error handling and refresh support for embedded content including PDFs, videos, and audio.
- **Style**
- Added styles for the attachment embed status indicator positioning.
- **Refactor**
- Streamlined attachment and resource controller implementations for better maintainability.
- **Tests**
- Added end-to-end test verifying PDF viewer reload and re-rendering in embed mode.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: [BS-3434](https://linear.app/affine-design/issue/BS-3434/修复-attachment-从-card-切换为-embed-尺寸问题)
<img width="1073" alt="Screenshot 2025-05-07 at 20 38 53" src="https://github.com/user-attachments/assets/9fbb7e40-3c01-4473-88d8-3469758ed06b" />
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Added dedicated embed actions for PDF and video attachments, ensuring consistent sizing and improved rendering for these media types.
- **Refactor**
- Centralized PDF and video embed card dimensions using shared constants for more consistent and maintainable sizing.
- Improved styling for video embeds, including better layout and responsive sizing.
<!-- 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**
- Added enhanced privacy controls by including the `credentialless` attribute to embedded content iframes for PDF, Figma, Loom, YouTube, and generic iframe blocks. This helps improve security and privacy when displaying embedded content.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: [BS-3359](https://linear.app/affine-design/issue/BS-3359/重构-filesizelimitservice-支持-handle-文件超出限制)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Added an "Upgrade" button to attachment blocks that appears when file size limits are exceeded, enabling users to view storage plans and upgrade.
- **Refactor**
- Unified file size limit handling across attachments and images for consistency.
- Redesigned file size limit service with improved integration and dependency injection.
- **Chores**
- Updated service registrations and dependency management for file size limit enforcement.
- Integrated a new file size limit extension that triggers storage plan dialogs and tracking events on limit exceedance.
<!-- 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 -->
fundon