Build a UniversalDataGrid Component

[lishmanTech]

Description

Develop a reusable enterprise-grade data grid.

Acceptance Criteria

Virtualization
Sorting
Filtering
Column pinning
Export
Keyboard accessibility

[Truphile]

Hi! I'd like to work on this.

I'll start by tracing the current execution flow to understand where the behavior is implemented and identify any related code paths that may be affected. I'll implement the requested changes while preserving existing behavior, add regression tests covering both expected and edge-case scenarios, and verify that the changes remain backward compatible with the current API and UI contracts before submitting a PR.

[ThatCodeBabe]

Hi Maintainer, can i work on this?

[grantfox-oss]

🦊 GrantFox — @ThatCodeBabe has been assigned to this issue as part of the Official Campaign | FWC26 campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #611)
2. Your PR will be reviewed by the Gatheraa maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign | FWC26 campaign!

@ThatCodeBabe's PR #633 was approved and merged by @lishmanTech.

🏆 @ThatCodeBabe: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (449 total points). Track your full progress on GrantFox.

👏 Great work, @ThatCodeBabe! Keep contributing to Gatheraa.