hugo server/build was failing with "binary postcss is not a Node.js
script" — pnpm's default node_modules/.bin shims are shell wrappers, not
plain Node scripts, which Hugo's exec-security check rejects. Switches
head.html from css.PostCSS to css.TailwindCSS, drops the now-unused
PostCSS toolchain, and adds pnpm-workspace.yaml's
preferSymlinkedExecutables so pnpm emits real symlinks Hugo can exec
(same fix already in use on roux).
Also updates the Dockerfile's build stage to hugomods/hugo:debian-node,
which bundles the matching Hugo Extended + Node versions, keeping ffmpeg
for the video-compression step.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012E2mmywuZyXmPBgSDtNdTL