[Feature]: Drag & drop files from desktop to upload

[DenizAltunkapan]

Description

Users should be able to drag files from their desktop or file manager directly into the cloud view to upload them, instead of always having to use the file picker button.

Current Behavior

Drag & drop is already implemented for moving files and folders within the cloud storage. However, dropping files from outside the browser (desktop/OS) does nothing — there are no drop or dragover handlers for external file uploads.

Expected Behavior

• Dragging a file from the desktop over the cloud view shows a visual drop zone
• Dropping the file triggers an upload to the current folder

Implementation Notes

• Add dragover and drop event listeners to the file list container
• Prevent default browser behavior on dragover
• On drop, read event.dataTransfer.files and pass each file to the existing upload method
• Add visual feedback (e.g. highlight border) while dragging over the drop zone

[Mahi1215]

hlo sir,
can i work on it

[DenizAltunkapan]

hlo sir,
can i work on it

@Mahi1215 i assigned you

[Mahi1215]

Hi! I've completed the drag-and-drop upload feature and opened a PR for review: #256. When you have a chance, I'd appreciate it if you could take a look. Thank you!