feat(homepage): add customizable homepage functionality

[lokanandaprabhu]

Hey, I just made a Pull Request!

Story:

https://issues.redhat.com/browse/RHIDP-8731
https://issues.redhat.com/browse/RHIDP-8764
https://issues.redhat.com/browse/RHIDP-8766

The customizable homepage provides:

• Drag and drop - Move cards around the layout
• Resize - Adjust card dimensions
• Add widget - Select from available cards to add to the homepage
• Remove cards - Delete cards from the homepage
• Restore defaults - Reset to the original card configuration
• User persistence - Settings are saved per user using Backstage's Storage API

Homepage-customization.mov

✔️ Checklist

• A changeset describing the change and affected packages. (more info)
• Added or Updated documentation
• Tests for new functionality and regression tests for bug fixes
• Screenshots attached (for UI changes)

[rhdh-gh-app]

Important

This PR includes changes that affect public-facing API. Please ensure you are adding/updating documentation for new features or behavior.

Changed Packages

Package Name	Package Path	Changeset Bump	Current Version
app	workspaces/homepage/packages/app	none	v0.0.0
@red-hat-developer-hub/backstage-plugin-dynamic-home-page	workspaces/homepage/plugins/dynamic-home-page	minor	v1.8.0

[lokanandaprabhu]

/cc @christoph-jerolimov @its-mitesh-kumar

[karthikjeeyar]

Thanks @lokanandaprabhu This looks great 🎉

I noticed that default cards are getting scrollbars and content flows behind the card height, can we fix the height of these cards ? The corners in the scrollbar side of cards are not rounded like it is on the non-scrollbar end.

[karthikjeeyar]

I am able to add the same widget again and again, probably a bug in upstream repo. but I'd like to get some thoughts from you folks before opening an issue in upstream. cc: @christoph-jerolimov

[HusneShabbir]

@lokanandaprabhu the "Clear all" functionality isn't working as expected when a duplicate widget is added.
Please refer to the recording attached for a demonstration of the issue.

Screen.Recording.2025-09-26.at.1.17.43.PM.mov

[lokanandaprabhu]

backstage/backstage#31292 Created upstream issue.

[lokanandaprabhu]

@karthikjeeyar , updated the heights. PTAL.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[karthikjeeyar]

Looks much better now, thanks @lokanandaprabhu

/approve
/lgtm