Consolidate app changes, ensure PNG/LFS removed

.gitattributes

@@ -33,4 +33,3 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
-*.png filter=lfs diff=lfs merge=lfs -text

app.py

@@ -78,7 +78,7 @@ if not all_parsed_documents:
 EMBEDDING_MODEL_NAME = "geetach/finetuned-prompt-retriever"
 embeddings = HuggingFaceEmbeddings(
     model_name=EMBEDDING_MODEL_NAME,
-    model_kwargs={'device': 'mps'},  # Use 'cuda' for GPU, 'cpu' for CPU, 'mps' for M1/M2 Mac
+    model_kwargs={},  # Let sentence-transformers auto-detect device (cuda or cpu)
     encode_kwargs={'normalize_embeddings': True}  # Ensures cosine similarity works correctly
 )