A few improvements via the 🐇 review

Author: ericallam

packages/cli-v3/src/entryPoints/dev-run-controller.ts

@@ -123,7 +123,7 @@ export class DevRunController {
       },
     });
 
-    process.on("SIGTERM", this.sigterm);
+    process.on("SIGTERM", this.sigterm.bind(this));
   }
 
   private async sigterm() {

packages/cli-v3/src/entryPoints/managed-run-worker.ts

@@ -559,6 +559,8 @@ const zodIpc = new ZodIpcConnection({
             });
           }
         } finally {
+          standardHeartbeatsManager.stopHeartbeat();
+
           _execution = undefined;
           _isRunning = false;
 

packages/core/src/v3/heartbeats/api.ts

@@ -4,11 +4,11 @@ import { HeartbeatsManager } from "./types.js";
 const API_NAME = "heartbeats";
 
 class NoopHeartbeatsManager implements HeartbeatsManager {
-  async startHeartbeat(id: string) {
+  startHeartbeat(id: string) {
     return;
   }
 
-  async stopHeartbeat() {
+  stopHeartbeat() {
     return;
   }
 

packages/core/src/v3/heartbeats/manager.ts

@@ -29,6 +29,7 @@ export class StandardHeartbeatsManager implements HeartbeatsManager {
   }
 
   startHeartbeat(id: string) {
+    this.stopHeartbeat();
     this.currentAbortController = new AbortController();
     this.lastHeartbeatYieldTime = Date.now();