* feat: implement message editing and resend functionality with block management
* fix: move start_time_millsec initialization to onChunk for accurate timing
* feat: refactor message update thunks to separate block addition and updates
* feat: enhance MessageBlockEditor with toolbar buttons and attachment functionality
* refactor: implement message editing context and integrate with message operations
* style: adjust padding in MessageBlockEditor and related components
* refactor: remove MessageEditingContext and integrate editing logic directly in Message component
* refactor: streamline message rendering logic by using conditional rendering for MessageEditor and MessageContent
* refactor: remove redundant ipcRenderer variable in useMCPServers hook
* fix: Add mock for electron's ipcRenderer to support testing
* test: Update mocks for ipcRenderer and remove redundant window.electron mock
* fix: enhance file handling in MessageEditor with new Electron API
- Added support for file dragging with visual feedback.
- Improved file type validation during drag-and-drop and clipboard pasting.
- Displayed user notifications for unsupported file types.
- Refactored file handling logic for better clarity and maintainability.
- Updated vitest.config.ts to handle optional chaining for plugins and alias.
- Added setup.ts for mocking electron-log in renderer tests.
- Adjusted test include and exclude patterns to refine test coverage.
