Merge main into refactor/instance-split

Resolved conflicts in:
- pkg/instance/instance.go: Combined remote detection logic from main with refactored structure
- pkg/manager/manager_test.go: Updated manager initialization to include localNodeName parameter
- pkg/manager/remote_ops.go: Removed stripNodesFromOptions function that was deleted in main
- pkg/manager/remote_ops_test.go: Removed file that was deleted in main

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

pkg/manager/timeout_test.go

@@ -23,7 +23,7 @@ func TestTimeoutFunctionality(t *testing.T) {
 		MaxInstances:         5,
 	}
 
-	manager := manager.NewInstanceManager(backendConfig, cfg, map[string]config.NodeConfig{})
+	manager := manager.NewInstanceManager(backendConfig, cfg, map[string]config.NodeConfig{}, "main")
 	if manager == nil {
 		t.Fatal("Manager should be initialized with timeout checker")
 	}