chore: fix dev script

server/src/scripts/dev.ts

@@ -2,6 +2,8 @@
 //Runs `npm run dev-bg` and listens for interrupts to execute `npm run teardown`
 import { spawn } from "node:child_process";
 
+let isShuttingDown = false;
+
 const child = spawn("npm", ["run", "dev-bg"], {
   stdio: "inherit",
   shell: true,
@@ -12,12 +14,15 @@ async function teardown() {
   const teardownProcess = spawn("npm", ["run", "teardown"], {
     stdio: "inherit",
     shell: true,
+    detached: true
   });
 
   await new Promise((resolve) => teardownProcess.on("exit", resolve));
 }
 
 async function shutdown(signal: any) {
+  if(isShuttingDown) return;
+  isShuttingDown = true;
   child.kill(signal);
   await teardown();
   process.exit();
@@ -27,6 +32,5 @@ process.on("SIGINT", () => shutdown("SIGINT"));
 process.on("SIGTERM", () => shutdown("SIGTERM"));
 
 child.on("exit", async (code) => {
-  await teardown();
   process.exit(code ?? 0);
 });