fix: add Dockerfile to root for HF Space

fix: remove empty sdk_version from frontmatter

fix: add HF Space frontmatter to root README.md

fix: clean README frontmatter with empty sdk_version

fix: simplify README frontmatter for HF Docker space

fix: add sdk_version to README frontmatter

Fix Dockerfile: use npm install instead of npm ci

Add hf-space deployment files for ContentMint

Rebuild frontend with vanilla Three.js sacred geometry aesthetic

Initial commit: only-bands (cleaned)