Update app.py

app.py

@@ -11,10 +11,11 @@ except ImportError as e:
     print("📦 Required packages: torch, sentence-transformers, chromadb")
 
 # Global variables for model and collection (initialized lazily)
-model = None
-collection = None
-device = None
 config = Config()
+device = Config.get_device()
+model = SentenceTransformer(config.MODEL_PATH)
+collection = None
+
 
 class EmbeddingGemmaPrompts:
     """