chore: import upstream snapshot with attribution

apps/webapp/app/services/httpAsyncStorage.server.ts

@@ -0,0 +1,33 @@
+import { AsyncLocalStorage } from "node:async_hooks";
+
+export type HttpLocalStorage = {
+  requestId: string;
+  path: string;
+  host: string;
+  method: string;
+  abortController: AbortController;
+};
+
+const httpLocalStorage = new AsyncLocalStorage<HttpLocalStorage>();
+
+export type RunWithHttpContextFunction = <T>(context: HttpLocalStorage, fn: () => T) => T;
+
+export function runWithHttpContext<T>(context: HttpLocalStorage, fn: () => T): T {
+  return httpLocalStorage.run(context, fn);
+}
+
+export function getHttpContext(): HttpLocalStorage | undefined {
+  return httpLocalStorage.getStore();
+}
+
+// Fallback signal that is never aborted, safe for tests and non-Express contexts.
+const neverAbortedSignal = new AbortController().signal;
+
+/**
+ * Returns an AbortSignal wired to the Express response's "close" event.
+ * This bypasses the broken request.signal chain in @remix-run/express
+ * (caused by Node.js undici GC bug nodejs/node#55428).
+ */
+export function getRequestAbortSignal(): AbortSignal {
+  return httpLocalStorage.getStore()?.abortController.signal ?? neverAbortedSignal;
+}