fix: add setLayerPortName() public method (layerPortName is private)

Source/Helper/HelperPluginHost.h

@@ -42,6 +42,8 @@ public:
     void hideGui();
     int getGuiWidth() const { return guiWidth; }
     int getGuiHeight() const { return guiHeight; }
+    void setLayerPortName(const juce::String& name) { layerPortName = name; }
+    juce::String getLayerPortName() const { return layerPortName; }
 
     // Event injection (from host process)
     void injectMouseDown(float x, float y, int button);
@@ -57,9 +59,6 @@ public:
     bool setStateBase64(const juce::String& base64State);
     void configure(double sampleRate, int blockSize, int channels);
 
-    // CARemoteLayerServer port name (set after GUI is created)
-    juce::String getLayerPortName() const { return layerPortName; }
-
     // Callback for resize
     std::function<void(int w, int h)> onGuiResized;