refactor(agents): migrate console.warn/error/info to subsystem logger (#22906)

Merged via /review-pr -> /prepare-pr -> /merge-pr.

Prepared head SHA: a806c4cb27
Co-authored-by: Kepler2024 <166882517+Kepler2024@users.noreply.github.com>
Co-authored-by: gumadeiras <5599352+gumadeiras@users.noreply.github.com>
Reviewed-by: @gumadeiras

src/agents/tools/gateway-tool.ts

@@ -9,10 +9,13 @@ import {
   writeRestartSentinel,
 } from "../../infra/restart-sentinel.js";
 import { scheduleGatewaySigusr1Restart } from "../../infra/restart.js";
+import { createSubsystemLogger } from "../../logging/subsystem.js";
 import { stringEnum } from "../schema/typebox.js";
 import { type AnyAgentTool, jsonResult, readStringParam } from "./common.js";
 import { callGatewayTool, readGatewayCallOptions } from "./gateway.js";
 
+const log = createSubsystemLogger("gateway-tool");
+
 const DEFAULT_UPDATE_TIMEOUT_MS = 20 * 60_000;
 
 function resolveBaseHashFromSnapshot(snapshot: unknown): string | undefined {
@@ -116,7 +119,7 @@ export function createGatewayTool(opts?: {
         } catch {
           // ignore: sentinel is best-effort
         }
-        console.info(
+        log.info(
           `gateway tool: restart requested (delayMs=${delayMs ?? "default"}, reason=${reason ?? "none"})`,
         );
         const scheduled = scheduleGatewaySigusr1Restart({