Every Linux step now runs under ci/guard-step.py. The first step that fails, is cancelled or times out marks the pipeline; running steps get SIGTERM (so traps release flock and Buildah state) then SIGKILL, steps that have not started exit at once, and any process a step leaves behind is killed. A pipeline deadline is the last resort. build-linux-agent.sh now prints the lookup error, store configuration and the restore images present when the prepared restore image cannot be found.
Build musl and glibc for amd64 and arm64 through one native package path. Reuse musl outputs for OCI images and OpenWrt installers, and export binaries inside a rootless unshare session.
Restore the executable dependency graph into a shared persistent NuGet cache, build managed dependencies once, and run isolated native publishes in parallel.
Clean temporary outputs and expired image layers under store locks, retire inactive legacy stores after seven days, and retain two toolchain exports. Add regression coverage for staging, extraction, packaging and cleanup boundaries.
Namespaces, assemblies, solution, binaries, images, systemd units, config paths, environment variables, protocol methods and the Linux user are all renamed. Breaking: existing databases, node identities and installed units must be recreated.
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