Update app.py

app.py

@@ -55,8 +55,8 @@ DATA_DIR = Path("/data") if Path("/data").is_dir() else Path("./data")
 CHROMA_PERSIST_DIR = str(DATA_DIR / "chroma_db")
 TRAIN_DOCS_DIR = Path("./train_data")
 COLLECTION_NAME = "rag_documents"
-CHUNK_SIZE = 512
-CHUNK_OVERLAP = 50
+CHUNK_SIZE = 1200
+CHUNK_OVERLAP = 200
 TOP_K_RESULTS = 3
 
 # Settings loaded from data/config.json (runtime config).