feat: implement model management system and integrate OpenVINO NPU support for image generation.

.gitignore

@@ -3,8 +3,12 @@ app/models/*.safetensors
 app/models/*.gguf
 app/models/*.ckpt
 app/models
+app/openvino-models/
 app/outputs/
 
+# Ignore generated frontend build output
+app/dist/
+
 # Ignore portable Node.js binaries and packages
 app/tools/
 **/node_modules/
@@ -22,8 +26,3 @@ app/backend/
 Thumbs.db
 *.log
 *.tmp
-
-
-
-# output images folder
-/app/outputs