Replaces the placeholder index.html with a full personal-projects page
listing all 17 projects across four sections (CipherDolls, decentralized
apps, AI on GPU, Ethereum infrastructure) as cards with name, description,
tech tags, and GitHub links. Adds styles.css (dark-first, light override,
mobile-first responsive grid) and a .dockerignore to keep the build context
clean. Updates the Dockerfile to copy styles.css alongside index.html.