Improve visual feedback in MemoEditor for drag/drop file uploads

[sawatkins]

Improve drag/drop file upload experience with better visual feedback and state management. This enhances clarity and usability.

Changes:

• Allow file drop on entire area of MemoEditor
• Add clear drag/drop visual feedback with dashed border, cursor: copy, and loading spinner
• Pass isUploadingResource from MemoEditor to UploadResourceButton as a prop to always display spinner during active uploads
• Add isDraggingFile state in MemoEditor to track drag UI state

20250416_123429.mp4

[Copilot]

Pull Request Overview

This PR improves the drag/drop file upload experience in the MemoEditor by extending the drop area, adding visual cues, and managing upload state more explicitly.

• Introduces a new isDraggingFile state in MemoEditor for drag event tracking.
• Updates the MemoEditor drop zone styling and event handlers to reflect drag state.
• Passes isUploadingResource to UploadResourceButton and updates its behavior accordingly.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
web/src/components/MemoEditor/index.tsx	Adds state and drag event handling for file drops with corresponding UI updates and error handling refinements.
web/src/components/MemoEditor/ActionButton/UploadResourceButton.tsx	Adjusts UploadResourceButton to accept an isUploadingResource prop and disables the component while an upload is in progress.

Comments suppressed due to low confidence (2)

web/src/components/MemoEditor/index.tsx:226

• Consider providing a fallback error message in case error.details is undefined to ensure the user always sees a clear error alert during file uploads.

toast.error(error.details);

web/src/components/MemoEditor/ActionButton/UploadResourceButton.tsx:70

• Consider providing a fallback error message in the catch block to handle cases where error.details might be undefined, thereby improving clarity in the error notifications.

toast.error(error.details);

[johnnyjoygh]

LGTM