Use the server suite timeout for Cursor sandbox qualification

The loaded CI shard exceeded this test's shorter 10-second override. Inherit the existing 15-second server test limit, matching the adjacent sandbox case, while retaining all command and environment assertions. Record the original CI interruption and timeout separately from live qualification.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

server/src/__tests__/cursor-local-execute.test.ts

@@ -388,7 +388,7 @@ describe("cursor execute", () => {
       else process.env.HOME = previousHome;
       await fs.rm(root, { recursive: true, force: true });
     }
-  }, 10_000);
+  });
 
   it("keeps explicit command overrides for remote sandbox execution", async () => {
     const root = await fs.mkdtemp(path.join(os.tmpdir(), "paperclip-cursor-sandbox-explicit-"));