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-3352](https://linear.app/affine-design/issue/BS-3352/[improvement]-附件上传时禁止切-view)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **Bug Fixes**
- Improved the logic for enabling or disabling the embed and card actions in the attachment toolbar, ensuring actions are only available when the file is ready and conditions are met.
- **Refactor**
- Enhanced reliability by centralizing block state checks and refining conditions for action availability in the attachment dropdown menu.
- Centralized resource state management with a new computed signal, improving consistency in loading and error state handling.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Related to: [BS-3143](https://linear.app/affine-design/issue/BS-3143/更新-loading-和错误样式)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced a unified resource controller for managing image and attachment resources, providing improved loading, error, and state handling.
- Added a visual loading indicator overlay to image blocks for better feedback during image loading.
- **Improvements**
- Simplified and centralized image and attachment state management, reducing redundant properties and manual state tracking.
- Updated fallback UI for image blocks with clearer titles, descriptions, and improved layout.
- Enhanced batch image block creation and download handling for improved efficiency.
- Refined image block accessibility with improved alt text and streamlined rendering logic.
- Centralized target model selection for image insertion in AI actions.
- Reordered CSS declarations without affecting styling.
- Improved reactive state tracking for blob upload/download operations in mock server.
- **Bug Fixes**
- Improved cleanup of object URLs to prevent resource leaks.
- Adjusted toolbar logic to more accurately reflect available actions based on image state.
- **Tests**
- Updated end-to-end tests to match new UI text and behaviors for image loading and error states.
- **Chores**
- Refactored internal logic and updated comments for clarity and maintainability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Closes: [BS-3398](https://linear.app/affine-design/issue/BS-3398/实现资源控制器)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
## Summary by CodeRabbit
- **New Features**
- Introduced a ResourceController for centralized and reactive management of attachment resource states, improving error handling, loading indicators, and UI state resolution for attachments.
- Added public access to resource management utilities via new export paths.
- **Refactor**
- Streamlined attachment state management by replacing manual state tracking with the new ResourceController, simplifying code and enhancing maintainability.
- Updated rendering logic for attachments to use unified state objects for clearer UI feedback.
- Centralized blob URL creation and download state management within the ResourceController.
- **Chores**
- Updated dependencies and internal references to reflect the new resource management approach, ensuring consistency across packages.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
fundon
