[Bug/Improvement]: Consolidate bulk file operation notifications into single progress indicator

[ProfPhoenix]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

When performing bulk file operations through the web interface, e.g. moving multiple files into a folder using drag and drop, Nextcloud currently creates individual notifications for each file. This results in notification spam and poor user experience, especially with large numbers of files.

Current behavior:

• Each file operation generates its own toast notification
• Multiple notifications stack up and clutter the interface
• Operations appear slower due to notification overhead
• No clear indication of overall progress

Proposed behavior:

• Single consolidated notification for bulk operations like when Uploading multiple files
• Progress bar showing completion percentage
• Counter displaying "X of Y files processed"
• Clear indication when operation completes
• Reduced visual clutter

Environment:
Nextcloud version: 31.0.7.1
Browser: Firefox 142.0.1

Steps to reproduce

1. Create a folder and multiple files (e.g. 100) in one location in the Files app.
2. Mark all files and drag & drop them into the folder.

Expected behavior

Single consolidated notification for bulk operations with progress bar.

Nextcloud Server version

31

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.2

Web server

Apache (supported)

Database engine version

MySQL

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

Additional info

No response