Make the service build, run, and install on Linux as a first-class
target while keeping the Windows Service + Event Log behaviour intact.
- Build: drop the hardcoded win-x64 RID — single-file publish now works
for any RID. publish.ps1 gains -Rid; new publish.sh for Linux hosts.
- Diagnostics: DiagnosticSinkSelector picks the Error+ sink per host —
Windows Event Log under the SCM, local syslog under systemd
(Serilog.Sinks.SyslogMessages), none for interactive runs. The
EventLog truncation helper is extracted so it is testable cross-OS.
- Host: Program.cs registers AddSystemd() alongside AddWindowsService().
- Config: a RID-conditioned appsettings template ships Windows or Unix
paths; both templates are schema-validated by a test.
- Install: systemd unit (Type=exec) plus install.sh / uninstall.sh.
Also fixes two cross-platform bugs found while testing: install.ps1
and uninstall.ps1 used New-EventLog / Remove-EventLog (absent in
PowerShell 7), and the E2E sim launcher hardcoded Windows venv paths.
- Docs updated across README, CLAUDE.md, and docs/ for dual-platform.
413 tests pass on Windows; 374 (all non-simulator) on Linux.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Joseph Doherty
b330faff03