feat: workloads pt.2

[dennisvankekem]

Considerations

• I have tested the changes in both light and dark mode.
• I have considered the need for new unit tests.
• I have tested the changes on a cluster.
• I have included relevant documentation updates.
• I have an approved Figma design or have reflected my changes in Figma
• I have verified that the UI/UX is consistent in major browsers (e.g., Chrome, Firefox, Safari, Edge).
• I have tested the changes for responsiveness in different screen resolutions.
• I have tested expected error states and verified that the user is presented with informative error messages.
• I have tested the feature with unusual or extreme inputs (e.g., very long strings, empty states, clicking a button multiple times quickly).

[Copilot]

Pull Request Overview

This PR refactors the workloads create/edit functionality by simplifying the UI and improving code organization. The changes remove the tab-based interface and streamline the user experience.

• Removed tab-based navigation and README display functionality
• Added a new dedicated CodeEditor component for YAML editing
• Simplified the main Catalog component by removing unused imports and UI elements

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 5 comments.

File	Description
WorkloadsCreateEditPage.tsx	Removed README handling and simplified workload loading logic
WorkloadsCodeEditor.tsx	New dedicated YAML editor component with validation and error handling
Catalog.tsx	Major refactor removing tabs, README display, and simplifying the interface

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