[cueweb] Add Professional Empty States and Loading Skeletons

[ramonfigueiredo]

Describe the enhancement
Replace empty tables and loading states with professional illustrations, helpful messages, and skeleton screens that match the layout structure.

• Current: Basic "No data" text or blank screens
• Proposed: Illustrated empty states with actionable suggestions and shimmer loading effects

Version Number

• https://github.com/AcademySoftwareFoundation/OpenCue/releases/tag/v1.11.66

Additional context

• Create comprehensive empty states:
  • No jobs: Illustration with "No active jobs" + "Submit a job to get started" CTA
  • No search results: "No jobs match your filters" with clear filters button
  • Error states: Friendly error messages with retry options
  • Loading skeletons: Table row skeletons matching column structure
• Add subtle animations (fade-in, pulse for skeletons)
• Use consistent illustration style (could use unDraw or custom SVGs)
• Implement shimmer effect for loading states
• Files: Create /cueweb/components/ui/empty-states/, update data-table.tsx

[ramonfigueiredo]

FYI

• [docs] Add comprehensive CueWeb documentation #1955

CueWeb docs:

• Quick Starts > CueWeb Quick Start
• Getting Started > Deploying CueWeb
• CueWeb User Guide > CueWeb User Guide
• Other Guides > CueWeb
• Tutorials > CueWeb Tutorial
• Developer Guide > CueWeb Development

[ramonfigueiredo]

FYI ...

The OpenCue sandbox provides a quick way to run Cuebot, RQD, CueGUI, and CueSubmit locally for testing. This environment is ideal for developers who want to test changes, experiment with features, or learn how OpenCue works without setting up a full production environment.

• Using the OpenCue Sandbox for Testing

[ramonfigueiredo]

Closed in favor of consolidated tracking under the issue/enhacement:

• [cueweb] Finalize CueWeb with Full CueGUI Functionality and Professional UI #2016