[dheerajturaga]

Highlight the selected task instance square in Grid view so it is easier to identify the currently open task.

The highlight is scoped to the selected Dag run and task, so selecting a task no longer highlights the same task across every visible Dag run column. Dark mode uses a lighter outline color for better contrast.

Tests added for selected task highlighting, dark-mode outline token selection, different-task behavior, and same-task/different-run behavior.

before: (Hard to easily see when you have a lot of tasks)

After:

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Was generative AI tooling used to co-author this PR?

• Yes — Codex (GPT-5)

Generated-by: Codex (GPT-5) following the guidelines

[shubhamraj-git]

Thanks for the changes..

The dark mode looks good, but the light mode is not that different from the original if we have lot of grids, maybe we need to increase the border.

[dheerajturaga]

Thanks for the changes..

The dark mode looks good, but the light mode is not that different from the original if we have lot of grids, maybe we need to increase the border.

Make it thicker 2px

[bbovenzi]

Adding a focus highlight makes sense. But why get rid of the row highlight?

[dheerajturaga]

Adding a focus highlight makes sense. But why get rid of the row highlight?

Good catch, That wasnt my intent. Let me fix this

[dheerajturaga]

Adding a focus highlight makes sense. But why get rid of the row highlight?

Done!

[vatsrahul1001]

Moving to 3.4.0 as this new addition suits minot better

[dheerajturaga]

@bbovenzi , @shubhamraj-git ok to merge?