add TrellisClient, use it for model generation

Assets/_PROJECT/Scripts/ModeGeneration/ImageGenerationBox.cs

@@ -9,14 +9,16 @@ public class ImageGenerationBox : MonoBehaviour
     public Material loadingMaterial;
 
     public VoiceTranscriptionBox voiceTranscriptionTestBox;
-    public Image UIImage;
+    public Image imageDisplay;
+    public Texture2D LastTexture { get; private set; }
     public string promptSuffix = ", single object, front and side fully visible, realistic style, plain neutral background, clear details, soft studio lighting, true-to-scale";
 
     private MeshRenderer meshRenderer;
     private bool isLoading;
 
-    // Start is called before the first frame update
-    void Start()
+
+// Start is called before the first frame update
+void Start()
     {
         meshRenderer = GetComponent<MeshRenderer>();
     }
@@ -42,15 +44,16 @@ public class ImageGenerationBox : MonoBehaviour
             meshRenderer.material = loadingMaterial;
 
             byte[] imageBytes = await InvokeAiClient.Instance.GenerateImage(refinedPrompt);
-            Sprite sprite = CreateSprite(imageBytes);
-            UIImage.sprite = sprite;
+            LastTexture = CreateTexture(imageBytes);
+            Sprite sprite = CreateSprite(LastTexture);
+            imageDisplay.sprite = sprite;
 
             isLoading = false;
             meshRenderer.material = inactiveMaterial;
         }
     }
 
-    private Sprite CreateSprite(byte[] imageBytes)
+    private Texture2D CreateTexture(byte[] imageBytes)
     {
         var tex = new Texture2D(2, 2, TextureFormat.RGBA32, false);
         // ImageConversion.LoadImage returns bool (true = success)
@@ -59,10 +62,15 @@ public class ImageGenerationBox : MonoBehaviour
             Destroy(tex);
             throw new InvalidOperationException("Failed to decode image bytes into Texture2D.");
         }
-        
+
         tex.filterMode = FilterMode.Bilinear;
         tex.wrapMode = TextureWrapMode.Clamp;
 
+        return tex;
+    }
+
+    private Sprite CreateSprite(Texture2D tex)
+    {
         var sprite = Sprite.Create(
             tex,
             new Rect(0, 0, tex.width, tex.height),