ci: add RPM packaging for cortex and neuron

- cortex.spec: gateway binary, cortex.service systemd unit,
  cortex.toml + models.toml config files
- neuron.spec: neuron binary, neuron.service systemd unit,
  neuron.toml config file
- Parallel CI: srpm-cortex and srpm-neuron jobs build SRPMs
  concurrently, then publish to separate COPR repos
  (helexa/cortex and helexa/neuron)
- Shared cortex user/group across both packages
- Example configs: cortex.example.toml, neuron.example.toml,
  models.example.toml

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cortex.spec

@@ -1,7 +1,7 @@
 Name:           cortex
 Version:        0.1.0
 Release:        1%{?dist}
-Summary:        Inference gateway for multi-node mistral.rs clusters
+Summary:        Inference gateway for multi-node GPU clusters
 
 License:        GPL-3.0-or-later
 URL:            https://git.lair.cafe/helexa/cortex
@@ -15,11 +15,13 @@ BuildRequires:  cargo
 BuildRequires:  gcc
 BuildRequires:  systemd-rpm-macros
 
+Requires(pre):  shadow-utils
+
 %description
-Cortex is a Rust reverse-proxy that sits in front of multiple mistral.rs
-inference nodes and presents a unified OpenAI and Anthropic compatible
-API surface. It handles model routing, lifecycle management, request
-translation, and metrics collection.
+Cortex is a Rust reverse-proxy that sits in front of multiple inference
+nodes (via neuron daemons) and presents a unified OpenAI and Anthropic
+compatible API surface. It handles model routing, lifecycle management,
+request translation, and metrics collection.
 
 %prep
 %autosetup
@@ -38,12 +40,33 @@ cargo build --release -p cortex-cli
 
 %install
 install -Dm755 target/release/cortex %{buildroot}%{_bindir}/cortex
+install -Dm644 data/cortex.service %{buildroot}%{_unitdir}/cortex.service
+install -dm750 %{buildroot}%{_sysconfdir}/cortex
+install -Dm640 cortex.example.toml %{buildroot}%{_sysconfdir}/cortex/cortex.toml
+install -Dm640 models.example.toml %{buildroot}%{_sysconfdir}/cortex/models.toml
+
+%pre
+getent group cortex >/dev/null || groupadd -r cortex
+getent passwd cortex >/dev/null || useradd -r -g cortex -d /var/lib/cortex -s /sbin/nologin cortex
+
+%post
+%systemd_post cortex.service
+
+%preun
+%systemd_preun cortex.service
+
+%postun
+%systemd_postun_with_restart cortex.service
 
 %files
 %license LICENSE
 %doc README.md
 %{_bindir}/cortex
+%{_unitdir}/cortex.service
+%dir %attr(750,root,cortex) %{_sysconfdir}/cortex
+%config(noreplace) %attr(640,root,cortex) %{_sysconfdir}/cortex/cortex.toml
+%config(noreplace) %attr(640,root,cortex) %{_sysconfdir}/cortex/models.toml
 
 %changelog
-* Mon Apr 14 2026 Rob Thijssen <grenade@rob.tn> - 0.1.0-1
+* Tue Apr 15 2026 Rob Thijssen <grenade@rob.tn> - 0.1.0-1
 - Initial package