The test suite no longer compiled after the -p/-i match-modifier refactor,
there was no RPM packaging or shell-completion story, and running without a
TTY against an empty pipe silently returned nothing.
- Replace the fragile !isTerminal stdin check with stdinReader(): only read
node names when stdin is a real pipe/redirect carrying data, so /dev/null,
terminals, and empty/closed pipes fall through to a normal query (works when
invoked by an agent/CI with no TTY).
- Rewrite main_test.go to match the current buildQuery/run signatures and add
coverage for match modifiers, output modes, config precedence, and the new
stdinReader logic.
- Add nfpm packaging (packaging/nfpm.yaml, scripts/build-rpm.sh) that installs
the binary to /usr/bin and bundles generated bash/zsh/fish completions.
- Rework the Makefile to build into dist/ and add completions/rpm targets.
- Split the PR CI into build + test + pre-commit workflows and extend release
to build the RPM and PUT it to the artifactapi rpm-internal repo; every step
now sets a serviceAccount and k8s resources.
