* feat(cli): add Version var and version subcommand
* build(gradle): introduce uatu.version property for lockstep releases
* build(sdk-android): swap GitHub Packages for vanniktech Maven Central plugin
* build(spec-api): make package publish-ready for npm
* ci(release): add goreleaser config for cross-platform uatu CLI builds
* ci: add ci and release GitHub Actions workflows
* ci: restrict ci.yml to PR + workflow_dispatch (no direct push to master)
* docs(release): add local release targets, env example, and install docs
* build(sdk-android): make signAllPublications conditional on signing key
* ci(release): stage sidecar JAR at embed path before go build
* chore(spec-api): regenerate package-lock for updated package.json
* ci: install protoc-gen-go plugins before buf generate
* ci: bump Node to 22 (required for --experimental-strip-types)
Doctor flags a shipped binary that's still carrying the build-time
placeholder so `uatu test` won't silently fail trying to launch a
nonexistent sidecar. Makefile uatu target now copies the freshly
built fat JAR into the embed directory before `go build`.
pj