fix(neuron): run service as neuron user, not cortex

neuron and cortex are independent packages installable on different
hosts. Having neuron run under a 'cortex' system user implied a
shared identity that doesn't exist. Give neuron its own user/group.

- New data/neuron-sysusers.conf declares the neuron user/group with
  home /var/lib/neuron.
- systemd unit User/Group changed to neuron.
- Spec file attrs, explicit Provides, and %sysusers_create_compat
  updated to reference the neuron user.

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

Cargo.lock

@@ -351,7 +351,7 @@ checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
 
 [[package]]
 name = "cortex-cli"
-version = "0.1.3"
+version = "0.1.7"
 dependencies = [
  "anyhow",
  "clap",
@@ -366,7 +366,7 @@ dependencies = [
 
 [[package]]
 name = "cortex-core"
-version = "0.1.3"
+version = "0.1.7"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -381,7 +381,7 @@ dependencies = [
 
 [[package]]
 name = "cortex-gateway"
-version = "0.1.3"
+version = "0.1.7"
 dependencies = [
  "anyhow",
  "axum",
@@ -1184,7 +1184,7 @@ dependencies = [
 
 [[package]]
 name = "neuron"
-version = "0.1.3"
+version = "0.1.7"
 dependencies = [
  "anyhow",
  "async-trait",

Cargo.toml

@@ -8,7 +8,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.1.3"
+version = "0.1.7"
 edition = "2024"
 license = "GPL-3.0-or-later"
 repository = "https://git.lair.cafe/helexa/cortex"

cortex.spec

@@ -1,5 +1,5 @@
 Name:           cortex
-Version:        0.1.3
+Version:        0.1.7
 Release:        1%{?dist}
 Summary:        Inference gateway for multi-node GPU clusters
 

data/neuron-sysusers.conf

@@ -0,0 +1,3 @@
+g neuron - -
+u neuron - "Neuron GPU node daemon" /var/lib/neuron /sbin/nologin
+m neuron neuron

data/neuron.service

@@ -5,11 +5,11 @@ Wants=network-online.target
 
 [Service]
 Type=simple
-ExecStart=/usr/bin/neuron --config /etc/cortex/neuron.toml
+ExecStart=/usr/bin/neuron --config /etc/neuron/neuron.toml
 Restart=on-failure
 RestartSec=5
-User=cortex
+User=neuron
-Group=cortex
+Group=neuron
 
 [Install]
 WantedBy=multi-user.target

neuron.example.toml

@@ -1,6 +1,6 @@
 # neuron.example.toml — example configuration
 #
-# Copy to /etc/cortex/neuron.toml and adjust for your environment.
+# Copy to /etc/neuron/neuron.toml and adjust for your environment.
 #
 # Environment variable overrides use NEURON_ prefix with __ separators:
 #   NEURON_PORT=9090

neuron.spec

@@ -1,5 +1,5 @@
 Name:           neuron
-Version:        0.1.3
+Version:        0.1.7
 Release:        1%{?dist}
 Summary:        Per-node GPU discovery and harness management daemon for cortex
 
@@ -22,11 +22,11 @@ BuildRequires:  systemd-rpm-macros
 Requires(pre):  shadow-utils
 Requires:       systemd
 
-# rpm's sysusers provides-generator only emits versioned user(cortex) when
+# rpm's sysusers provides-generator only emits versioned user(neuron) when
-# the u-line has GECOS/home/shell fields. %attr(,,cortex) in %files emits
+# the u-line has GECOS/home/shell fields. %attr(,,neuron) in %files emits
-# an unversioned Requires: user(cortex), so we provide it explicitly.
+# an unversioned Requires: user(neuron), so we provide it explicitly.
-Provides:       user(cortex)
+Provides:       user(neuron)
-Provides:       group(cortex)
+Provides:       group(neuron)
 
 %description
 Neuron is a per-node daemon for cortex inference clusters. It discovers
@@ -51,12 +51,12 @@ cargo build --release -p neuron
 %install
 install -Dm755 target/release/neuron %{buildroot}%{_bindir}/neuron
 install -Dm644 data/neuron.service %{buildroot}%{_unitdir}/neuron.service
-install -Dm644 data/cortex-sysusers.conf %{buildroot}%{_sysusersdir}/neuron.conf
+install -Dm644 data/neuron-sysusers.conf %{buildroot}%{_sysusersdir}/neuron.conf
-install -dm750 %{buildroot}%{_sysconfdir}/cortex
+install -dm750 %{buildroot}%{_sysconfdir}/neuron
-install -Dm640 neuron.example.toml %{buildroot}%{_sysconfdir}/cortex/neuron.toml
+install -Dm640 neuron.example.toml %{buildroot}%{_sysconfdir}/neuron/neuron.toml
 
 %pre
-%sysusers_create_compat %{_builddir}/%{name}-%{version}/data/cortex-sysusers.conf
+%sysusers_create_compat %{_builddir}/%{name}-%{version}/data/neuron-sysusers.conf
 
 %post
 %systemd_post neuron.service
@@ -73,8 +73,8 @@ install -Dm640 neuron.example.toml %{buildroot}%{_sysconfdir}/cortex/neuron.toml
 %{_bindir}/neuron
 %{_unitdir}/neuron.service
 %{_sysusersdir}/neuron.conf
-%dir %attr(750,root,cortex) %{_sysconfdir}/cortex
+%dir %attr(750,root,neuron) %{_sysconfdir}/neuron
-%config(noreplace) %attr(640,root,cortex) %{_sysconfdir}/cortex/neuron.toml
+%config(noreplace) %attr(640,root,neuron) %{_sysconfdir}/neuron/neuron.toml
 
 %changelog
 * Tue Apr 15 2026 Rob Thijssen <grenade@rob.tn> - 0.1.0-1