refactor: replace huggingface-hub secret retrieval with environment variable

app.py

@@ -2,13 +2,10 @@ import os
 from google import genai
 from PIL import Image
 import gradio as gr
-from huggingface_hub.secrets import get_secret
+
 
 def get_api_key():
-    try:
-        return get_secret('GEMINI_API_KEY')
-    except Exception as e:
-        return None
+    return os.environ.get('GEMINI_API_KEY')
 
 def analyze_images(image1, image2):
     api_key = get_api_key()

requirements.txt

@@ -1,3 +1,2 @@
 google-genai
 pillow
-huggingface-hub