Update Documentation Images to Use Realistic, Structured Diagrams

What happened: The current images in the documentation appear to be AI-generated. Their structure, visual style, and elements do not accurately represent real system architecture or workflows, which affects clarity and credibility.

What you expected to happen: The documentation should include images that follow a clear, realistic structure and accurately convey the intended concepts. The visuals should be technically meaningful, consistent with the project’s design, and suitable for a production-grade open-source codebase like IAVNS.

How to reproduce it (as minimally and precisely as possible):

• Open the documentation pages where images are used. [docs/proposals/scenarios/example-restoration/Architecture-1.png]

• Observe the visual style and structure of the diagrams/images.

• Compare them with standard technical diagrams used for system architecture or workflows.

Anything else we need to know?: