Move images from repo root to /public/images/

[vayungodara]

Problem

7 large PNG files (~2.5MB total) sit in the repo root, cluttering the project structure and bloating the working directory.

What to change

• Create /public/images/ directory
• Move all root-level PNG/image files into /public/images/
• Update all references in components, CSS, and markdown to point to new paths
• Verify images render correctly after move

Acceptance criteria

• No image files in repo root
• All images accessible via /images/ URL path
• All existing references updated
• No broken images in the app

Label: tech-debt | Priority: medium