feat: add cross-platform release pipeline [CI SKIP]

backend/tests/Monitor.Backend.Tests/ProbeEndToEndTests.cs

@@ -3,7 +3,7 @@ using System.Text.Json.Nodes;
 namespace Monitor.Backend.Tests;
 
 /// <summary>真实的后端 + 真实的 Agent + 真实的 Probe（都在进程内，回环网络）。</summary>
-[Collection("backend")]
+[Collection("probe-e2e")]
 public sealed class ProbeEndToEndTests
 {
     private readonly BackendFixture _backend;