chore: condense inline comments per code review

Remove redundant rationale from test body (test names already convey it)
and trim the production comment to what/consequence/link (mechanism
details live in #39760).

Author: daymade

src/infra/process-respawn.test.ts

@@ -54,8 +54,6 @@ function expectLaunchdSupervisedWithoutKickstart(params?: { launchJobLabel?: str
   process.env.OPENCLAW_LAUNCHD_LABEL = "ai.openclaw.gateway";
   const result = restartGatewayProcessWithFreshPid();
   expect(result.mode).toBe("supervised");
-  // launchd path no longer calls triggerOpenClawRestart — it relies on
-  // KeepAlive=true to restart the service after the caller exits.
   expect(triggerOpenClawRestartMock).not.toHaveBeenCalled();
   expect(spawnMock).not.toHaveBeenCalled();
 }
@@ -74,7 +72,6 @@ describe("restartGatewayProcessWithFreshPid", () => {
     process.env.LAUNCH_JOB_LABEL = "ai.openclaw.gateway";
     const result = restartGatewayProcessWithFreshPid();
     expect(result.mode).toBe("supervised");
-    // launchd relies on KeepAlive=true — no kickstart call needed.
     expect(triggerOpenClawRestartMock).not.toHaveBeenCalled();
     expect(spawnMock).not.toHaveBeenCalled();
   });

src/infra/process-respawn.ts

@@ -31,10 +31,8 @@ export function restartGatewayProcessWithFreshPid(): GatewayRespawnResult {
   const supervisor = detectRespawnSupervisor(process.env);
   if (supervisor) {
     // launchd: exit(0) is sufficient — KeepAlive=true restarts the service.
-    // Calling `kickstart -k` from within the service itself races with
-    // launchd's async bootout state machine: the spawnSync timeout kills the
-    // launchctl child, but launchd continues the bootout and eventually
-    // SIGKILLs this process, leaving the LaunchAgent permanently unloaded.
+    // Self-issued `kickstart -k` races with launchd's bootout state machine
+    // and can leave the LaunchAgent permanently unloaded.
     // See: https://github.com/openclaw/openclaw/issues/39760
     if (supervisor === "schtasks") {
       const restart = triggerOpenClawRestart();