Tree view platform badge

[harleenkaur2003]

Title:

Display Latest Job Platform on Unexpanded Task Node

Description:

• This pull request addresses issue Tree view: show latest job platform next to unexpanded task #2153.
• Displays the latest job’s platform (e.g., [localhost]) next to collapsed task nodes in the Tree View.
• Mimics the behavior of the job summary icon — platform info disappears once the node is expanded.
• Uses the existing platform property for consistency with job nodes.
• Ensures UI alignment with the provided mockup.

Screenshot:

Checklist:

• I have read CONTRIBUTING.md and added my name as a Code Contributor.
• Contains logically grouped changes (else tidy your branch by rebase).
• Does not contain off-topic changes (use other PRs for other changes).
• Tests are included (or explain why tests are not needed). [Tests are not included since this is a visual UI change with no backend logic or new components]
• Changelog entry not included - UI is improved but this is a minor visual enhancement
• Docs not required- this change does not require documentation update

[hjoliver]

Thanks @harleenkaur2003! We'll take a look at this soon.

[harleenkaur2003]

Hey @hjoliver @MetRonnie !
Just checking in to see if there's any feedback needed on this pr. I'd be happy to make any changes if required.
Thanks!

[hjoliver]

Sorry for the delay @harleenkaur2003 - we are just slammed with higher priority issues at the moment. However, this is quite a small code change so maybe we can take a look very soon...

[hjoliver]

This looks good to me.

Tested with a platform group, of two faked platforms:

# global.cylc
[platforms]
    [[one]]
        hosts = localhost
        install target = localhost
    [[two]]
        hosts = localhost
        install target = localhost
[platform groups]
    [[nums]]
        platforms = one, two

@cylc/core -

• the code looks good to me, but need a second review from someone more familiar with the UI codebase
  • I've added @MetRonnie, as author of the associated issue (however, I think he is on leave at the moment)
• note the platform name, when collapsed, uses a smaller font and square brackets, which differs from the mock-up on the issue. Question: this might be sensible as it correctly suggests that the name is more loosely associated with the task (than with the job, when expanded), but on the other hand it looks a bit busier - preference?

[harleenkaur2003]

Thank you for the review and feedback!

Regarding the platform name style, I used brackets and a smaller font to visually separate the platform from the task name, but I'm happy to align it with mock-up style if preferred - just let me know!

Looking forward to @MetRonnie's review.

[MetRonnie]

Hi @harleenkaur2003, thanks for your contribution. I've added some suggestions

[MetRonnie]

Thanks for your contribution 👍

[MetRonnie]

(Waiting for approval from @hjoliver )

[harleenkaur2003]

Hey @hjoliver !
Just following up to see if the PR is ready for your review .Please let me know if any additional changes are needed from my side.
Thankyou.

[hjoliver]

Apologies @harleenkaur2003 - it just slipped off my radar screen! Taking a look today...

[hjoliver]

Great, thanks @harleenkaur2003 🎉