add hcw classification

.gitignore

@@ -1,5 +1,4 @@
 flagged/
-*.png
 *.jpg
 *.mp4
 *.jpeg

app.py

@@ -58,7 +58,7 @@ def classify_image(img, conf_threshold=0.25, iou_threshold=0.45):
     return Image.fromarray(annotated_img), waste_details
 
 
-with open("hcw-classification.png", "rb") as image_file:
+with open("hcw_classification.png", "rb") as image_file:
     encoded_image = base64.b64encode(image_file.read()).decode()
 image_data_uri = f"data:image/png;base64,{encoded_image}"