Harden async task flows and enhance analysis tooling

server/mediaService.test.ts

@@ -41,8 +41,16 @@ describe("getRemoteMediaSession", () => {
     const session = await getRemoteMediaSession("session-1");
 
     expect(session.id).toBe("session-1");
-    expect(fetchMock).toHaveBeenNthCalledWith(1, "http://127.0.0.1:8081/sessions/session-1");
-    expect(fetchMock).toHaveBeenNthCalledWith(2, "http://127.0.0.1:8081/media/sessions/session-1");
+    expect(fetchMock).toHaveBeenNthCalledWith(
+      1,
+      "http://127.0.0.1:8081/sessions/session-1",
+      expect.objectContaining({ signal: expect.any(AbortSignal) }),
+    );
+    expect(fetchMock).toHaveBeenNthCalledWith(
+      2,
+      "http://127.0.0.1:8081/media/sessions/session-1",
+      expect.objectContaining({ signal: expect.any(AbortSignal) }),
+    );
   });
 
   it("uses the configured /media base URL directly when already present", async () => {
@@ -68,6 +76,9 @@ describe("getRemoteMediaSession", () => {
 
     expect(session.id).toBe("session-2");
     expect(fetchMock).toHaveBeenCalledTimes(1);
-    expect(fetchMock).toHaveBeenCalledWith("http://media:8081/media/sessions/session-2");
+    expect(fetchMock).toHaveBeenCalledWith(
+      "http://media:8081/media/sessions/session-2",
+      expect.objectContaining({ signal: expect.any(AbortSignal) }),
+    );
   });
 });