Closes: BS-3396
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced structured and validated configuration options for database and linked document views, allowing for more flexible and reliable customization.
- Enhanced view manager to conditionally enable AI-related paragraph placeholders and database/linked document extensions based on configuration.
- **Chores**
- Updated dependencies to include the latest version of the Zod validation library.
- Simplified and consolidated internal configuration and registration logic for AI and widget-related extensions.
- **Refactor**
- Streamlined configuration types and removed unused or redundant configuration utilities to improve maintainability.
- Improved robustness of linked widget configuration retrieval to handle optional service availability gracefully.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Close [BS-3268](https://linear.app/affine-design/issue/BS-3268/edgeless-下，-dark-mode-embed的配色应该更加清晰)
Close [BS-3067](https://linear.app/affine-design/issue/BS-3067/在embed上，添加split-view等相关的操作入口，基本接近page-block（见设计稿）)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced an interactive header for embedded synced documents with fold/unfold toggle, document opening, and multiple view options.
- Added info and copy link buttons for embedded synced documents and notes to improve document management and sharing.
- **Enhancements**
- Updated styles for embedded synced document blocks and headers for better visual consistency.
- Added new localization entries for header actions: "Fold", "Unfold", and "Open".
- Disabled redundant open document actions in toolbars, centralizing controls in the header.
- **Refactor**
- Unified header button components for notes and embedded synced documents into reusable components.
- Simplified header components by delegating button behaviors to shared components.
- **Bug Fixes**
- Fixed conditional rendering of editor content in embedded synced documents when folded.
- **Chores**
- Upgraded theme dependency version from "^1.1.12" to "^1.1.14" across multiple packages.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
close: BS-3378
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Introduced a modular virtualized table view with grouping, selection, drag-and-drop, clipboard support, and batch task management for optimized rendering.
- Added comprehensive keyboard shortcuts, drag-to-fill functionality, and clipboard operations for efficient table editing.
- Enabled dynamic column statistics, number formatting controls, and flexible switching between virtual and standard table views via a feature flag.
- Provided detailed row and group header/footer components with context menus, row management actions, and column reordering/resizing.
- Added a table view selector component to toggle between virtual and standard table views based on feature flags.
- **Style**
- Added extensive styling modules for virtual table elements including headers, footers, rows, cells, and interactive controls.
- **Chores**
- Registered numerous custom elements via modular effect functions to streamline component initialization.
- Updated feature flag system to include virtual table scrolling toggle.
- Added new dependencies to support styling and component functionality.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
