fix(docker): añade libgl1 para resolver error de OpenCV

fix: add libxcb1 for opencv-python-headless in Docker

build: consolida y optimiza Dockerfile (1 solo, no-root, libs mínimas, sin cache de wheels) + compose/render

feat(deploy): despliegue a Hugging Face Spaces (Dockerfile raíz + deploy_hf.ps1 + frontmatter)