feat: apply organization Apple design baseline

[VincentAdamNemessisX]

Summary

• add semantic surface/state/motion/accessibility tokens
• implement accessible project and release navigation for all MHToolkit products
• add reduced motion/transparency and increased contrast behavior
• capture desktop/mobile runtime screenshots with hashes

Verification

• rtk test python -m unittest tests/test_apple_design.py
• rtk git diff --check
• Playwright Chrome desktop/mobile screenshots under docs/design/