fix: mirror error-level logs to stderr in production

TheLastCicada · TheLastCicada · commit 56cca04a5379 · 2026-04-20T15:27:54.000-07:00
With NODE_ENV=production, the logger had no Console transport, so
logger.error(...) calls only reached the on-disk log files and were
invisible to journalctl/pm2/docker. The previous console.trace fallback
in the staging commit handler was the only thing operators saw in
systemd for that endpoint.

Add a production-only Console transport at error level with stderrLevels
so errors are written to process.stderr and picked up by the process
supervisor, without pushing verbose/info/debug traffic into journalctl.
File transports are unchanged, so the full log stream still lives on
disk.
diff --git a/src/config/logger.js b/src/config/logger.js
@@ -116,6 +116,16 @@ const createVersionLogger = (version) => {
         ),
       }),
     );
+  } else {
+    // In production, mirror error-level logs to stderr so operators can see
+    // them via journalctl/pm2/docker alongside the on-disk log files.
+    versionLogger.add(
+      new transports.Console({
+        level: 'error',
+        stderrLevels: ['error'],
+        format: format.combine(format.json()),
+      }),
+    );
   }
 
   return versionLogger;
