Three intertwined changes — split conceptually but landed together
because they share the same workflow rewrite:
1. MULTI-VERSION SITE. The published site now keeps every prior spec
version alongside the rolling latest build (docs.rs / readthedocs
pattern):
- .github/workflows/mdbook.yml builds latest from current HEAD and
each v* tag in a git worktree, placing each into _site/<ver>/.
Each per-version build gets MDBOOK_OUTPUT__HTML__SITE_URL set to
/meshcore-spec/<ver>/ so the sitemap/canonical links resolve
correctly per version.
- Workflow emits _site/versions.json (newest first) and a root
index.html that redirects to /latest/.
- theme/version-picker.js is a small client-side dropdown that
fetches /<base>/versions.json and lets the reader switch to the
same chapter in any other version. Slots into mdbook's menu bar
(.right-buttons); falls back to a fixed top-right widget if the
menu isn't found.
- theme/version-picker.css styles it to fit the navy theme.
- book.toml wires the picker files via additional-js /
additional-css; site-url defaults to /meshcore-spec/latest/ for
the main build (CI overrides per tag).
- Old tags built without these files render without a picker, which
is fine — users won't typically need to navigate AWAY from an
older version. v0.1.0 onward will all carry the picker.
Spec versions use independent semver and do NOT mirror MeshCore
firmware versions; each spec release records the upstream commit
hash it was validated against in CHANGELOG.md.
2. MISE-PINNED TOOLS. mise.toml pins cargo:mdbook so local dev and
CI use the same version. The workflow installs everything via
jdx/mise-action instead of peaceiris/actions-mdbook, making
mise.toml the single source of truth for tool versions.
3. JUSTFILE. justfile gives short names (build / serve / clean /
validate / setup) for the common tasks. Recipes run under
`mise exec -- sh -c …` so they always pick up the mise-pinned
tools (sh is intentional, keeping recipes POSIX-compatible).
Documentation: README's spec link now mentions the versioning model;
src/00-overview.md gets a "Spec Versions" subsection explaining the
URL layout and version-picker.
Verified locally: `just build` produces a clean book/ with the
version-picker JS/CSS injected (hashed filenames, slotted into
theme/). JS parses clean under `node --check`.
Note for first-time deploy: GitHub Pages source must be set to
"GitHub Actions" in repo settings (one-time, manual). After that,
push to main builds + deploys latest, and pushing a v* tag adds
the snapshot to the site.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
swaitsandClaude Opus 4.7
9ad31f7470