fix(server): a desktop backend whose launcher died shuts down cleanly instead of crashing (#22471)

Author: SunkenInTime

apps/server/src/cli/server.ts

@@ -13,6 +13,13 @@ import { type CliServerFlags, resolveServerConfig, sharedServerCommandFlags } fr
 
 const encodeCommand = Schema.encodeEffect(Schema.fromJsonString(Schema.String));
 
+// The desktop launcher reads this process's stdout and stderr. Once it is gone,
+// every log write fails, and Node turns an unhandled stream error into a crash
+// that skips shutdown and leaves the ownership lock and runtime record behind.
+function ignoreClosedLauncherPipe(error: NodeJS.ErrnoException): void {
+  if (error.code !== "EPIPE" && error.code !== "ERR_STREAM_DESTROYED") throw error;
+}
+
 const runServerCommand = Effect.fn("server.runServerCommand")(function* (
   flags: CliServerFlags,
   options?: {
@@ -25,6 +32,10 @@ const runServerCommand = Effect.fn("server.runServerCommand")(function* (
   const config = yield* resolveServerConfig(flags, logLevel, options);
   const run = runServer.pipe(Effect.provideService(ServerConfig.ServerConfig, config));
   if (config.mode !== "desktop" || config.desktopBootstrapToken === undefined) return yield* run;
+  yield* Effect.sync(() => {
+    process.stdout.on("error", ignoreClosedLauncherPipe);
+    process.stderr.on("error", ignoreClosedLauncherPipe);
+  });
   return yield* Effect.raceFirst(
     run,
     awaitLauncherLoss().pipe(