🎨 Palette: [UX improvement] Enhance architecture diagram semantic clarity

[Igor Holt (igor-holt)]

💡 What:

Updated the README.md architecture diagram to improve visual hierarchy and semantic clarity.

• Added a title Arbiter Hybrid Scheduling Architecture to the diagram.
• Included AI Workloads and aSHARD VRAM Pinning nodes to align with the project description.
• Utilized semantic Mermaid shapes: ([ stadium ]) for workloads/clusters and {{ hexagon }} for specialized scheduling/hardware components.
• Applied dashed borders to architectural subgraphs for better layer delineation.

🎯 Why:

The previous diagram was incomplete (missing VRAM pinning) and used uniform node shapes, making it harder for users to distinguish between different types of system components. These micro-UX enhancements improve the "Developer Experience" (DX) by making the complex orchestration layer more intuitive at a glance.

♿ Accessibility:

• Added an explicit title to the Mermaid block, providing better context for screen readers and document structure.

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PR created automatically by Jules for task 7116092526855712331 started by Igor Holt (@igor-holt)

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[gemini-code-assist]

Code Review

This pull request updates the architecture diagram in the README.md file to include AI workloads, aSHARD VRAM Pinning, and styling enhancements. The review feedback suggests using comma-separated values for the stroke-dasharray properties in the Mermaid diagram to ensure maximum compatibility across different parsers.

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[gemini-code-assist]

While stroke-dasharray: 5 5 is valid SVG, some Mermaid parsers (especially older versions or specific markdown renderers) can struggle to parse space-separated values within the style declaration. Using a comma-separated value like stroke-dasharray: 5,5 is more robust and ensures maximum compatibility across all platforms (such as GitHub, GitLab, and local IDE previewers).

Suggested change

	style CloudNative stroke-dasharray: 5 5
	style Orchestration stroke-dasharray: 5 5
	style Infrastructure stroke-dasharray: 5 5
	style CloudNative stroke-dasharray: 5,5
	style Orchestration stroke-dasharray: 5,5
	style Infrastructure stroke-dasharray: 5,5