[NFS]: Default Sticky Entity Page Layout

[camilaibs]

Hey, I just made a Pull Request!

Now the default entity page layout can be customized with cards of 3 types: info, peek and full.

• Cards of type info will be rendered in a right sticky area;
• Peek cards are rendered at the top of the main content area;
• Full cards and cards with undefined type are rendered as they were before, in the main area, below the peek cards.

So if you want to keep the layout as it was before, you don't need to do anything. But if you want to experiment with the card types and see how they are rendered, here is an example configuring the about card to be rendered as a card of type info:

app:
  extensions:
    # Entity page cards
+   - entity-card:catalog/about:
+       config:
+         type: info

✔️ 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)
• All your commits have a Signed-off-by line in the message. (more info)

[backstage-goalie]

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
example-app-next	packages/app-next	none	v0.0.21-next.1
@backstage/plugin-catalog	plugins/catalog	minor	v1.28.0-next.1

[backstage-goalie]

Thanks for the contribution!
All commits need to be DCO signed before they are reviewed. Please refer to the the DCO section in CONTRIBUTING.md or the DCO status for more info.

[Rugvip]

Kinda imagining that these will always be 12, regardless of size. Maybe if you expand to widescreen we'd have some side by side, but that'd be xxxl={6}

[camilaibs]

I used md={6} for visual backwards compatibility. Wouldn't it be a breaking change if I changed this for everyone using the default layout?

[Rugvip]

ah, arguably not or even the other way around I'd say. Currently we're kinda switching to 3 columns instead of 2 in total, but if we keep these cards at 12 it'd be more like 1.2 + 0.8 columns :p

[camilaibs]

In my mind, we only switch to 3 columns if people add types to the cards, but if they don't, the layout will remain 2 columns. However, I updated it to the size you suggested.

[Rugvip]

Nice! 👌

Couple of things but pre-approved

Tried it out with a couple of peek cards to see what it looks like, in case anyone else is curious: