Production builds failed CI's baseline preflight because flake.nix pinned
the app to tag 1.8 (channel.appVersion = "1.8") while the published
manifest had moved on to 1.9.
Stop pinning the app anywhere. flake.nix now fetches the channel's
published manifest at eval time (builtins.fetchurl) and bakes its
storePath verbatim, so every image carries exactly the closure RadiantWave
published to Attic and never compiles the app from source.
- flake.nix: drop the radiantwave/radiantwave-dev inputs, appInput,
appVersion, channelVersion and baselineOutPaths; add channelAtticUrl,
channelManifestDir and publishedApp; builders consume the published path.
- configuration.nix: wrap the published store path in a symlinkJoin so it
can live in environment.systemPackages; add --impure to autoUpgrade
flags and set tarball-ttl = 0 so eval reads the current manifest.
- radiantwave-updater.nix: baselinePackage (package) -> baselinePath (str),
seeded from the exact manifest path.
- CI (build.yml): replace the version-equality preflight with a fail-fast
check that the announced closure is in the channel's Attic; set
tarball-ttl = 0.
- build-rpi.sh: pass --impure.
- AGENTS.md: document the manifest-driven baseline.
NeilClack