The runner's cache server is reachable again since the VPS fix of
2026-10-03 (cache proxy pinned to port 28100, ufw rule scoped to the
Docker job networks; diagnosed in #374). Bring caching back to check-rust
through Swatinem/rust-cache, as #232 deferred.
forgejo-runner v12.7.0 keeps what a pull_request run saves private to
that PR, so PR runs alone would only warm later pushes to the same PR. A
weekly scheduled run on main (Mondays 06:30 UTC) and workflow_dispatch
write the shared entries that every PR falls back to.
rust-cache v2.9+ declares node24 and the runner starts JavaScript actions
with the container's node, so the job now installs Node.js 24. zstd is
installed for faster, smaller cache archives.
No npm cache in check-frontend, by decision: with per-PR isolation it
would only serve later pushes of a PR, and npm ci takes 9s there. audit.yml
loses two comments this change makes false.
No CHANGELOG entry: CI configuration only.
Refs #234
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
cf1da2bea0