first push

src/streamlit_app.py

@@ -14,12 +14,13 @@ st.sidebar.title("Navigation")
 page = st.sidebar.selectbox("Go to", ["Upload File", "Preprocess Data", "Train & Select Model", "Create App"])
 
 # Writable directories for Hugging Face / Streamlit Cloud
-BASE_DIR = "/tmp"  # only /tmp is writable in HF Spaces
+BASE_DIR = "/tmp"
 UPLOAD_DIR = os.path.join(BASE_DIR, "uploads")
 PROCESSED_DIR = os.path.join(BASE_DIR, "processed")
 PKL_DIR = os.path.join(BASE_DIR, "pkl")
 ENCODER_DIR = os.path.join(BASE_DIR, "encoders")
 
+# Create all necessary writable directories
 for d in [UPLOAD_DIR, PROCESSED_DIR, PKL_DIR, ENCODER_DIR]:
     os.makedirs(d, exist_ok=True)