pub fn write_omne_readme(root: &Path, content: &str) -> Result<()>Expand description
Write stamped README content to .omne/omne.md.
Per the v2 design, omne.md is a non-loaded README — the boot
chain skips it and goes straight from CLAUDE.md to
@.omne/dist/AGENTS.md. omne upgrade and omne validate still
read this file for identity metadata (volume, distro versions,
kernel-source, distro-source frontmatter).