update env example

Author: tskoyo

.env.example

@@ -68,6 +68,12 @@ MEDIUM_HEURIST_MODEL=
 LARGE_HEURIST_MODEL=
 HEURIST_IMAGE_MODEL=
 
+# DeepSeek Configuration
+DEEPSEEK_API_URL=              # Default: https://api.deepseek.com
+SMALL_DEEPSEEK_MODEL=          # Default: deepseek-chat
+MEDIUM_DEEPSEEK_MODEL=         # Default: deepseek-chat
+LARGE_DEEPSEEK_MODEL=          # Default: deepseek-chat
+
 WALLET_PRIVATE_KEY=EXAMPLE_WALLET_PRIVATE_KEY
 WALLET_PUBLIC_KEY=EXAMPLE_WALLET_PUBLIC_KEY