Have secret api key

app.py

@@ -169,6 +169,9 @@ def create_ui():
             if not text.strip() and not files:
                 return "❌ Please provide either text or upload files", ""
             
+            # Use API key from environment variable if not provided in UI
+            api_key_to_use = api_key or os.getenv("API_KEY", "")
+            
             # Create client
             client = OmniAPIClient(base_url)
             
@@ -186,7 +189,7 @@ def create_ui():
             success, response = client.send_chat_completion(
                 text=text,
                 files=valid_files,
-                api_key=api_key,
+                api_key=api_key_to_use,
                 model=model,
                 max_tokens=max_tokens
             )