Update app.py

app.py

@@ -17,6 +17,8 @@ GEMINI_API_KEY = os.getenv("GEMINI_API_KEY")
 if not GEMINI_API_KEY:
     raise RuntimeError("GEMINI_API_KEY not found in environment.")
 
+model = genai.GenerativeModel("gemini-2.5-flash")
+
 def call_gemini(prompt: str) -> str:
     """Use Gemini via REST API instead of gRPC-based SDK"""
     url = f"https://generativelanguage.googleapis.com/v1beta/models/gemini-pro:generateContent?key={GEMINI_API_KEY}"