Replace deprecated deepseek-v4-flash with deepseek-v4-1-flash (default + fallback)

config.yaml

@@ -6,10 +6,10 @@
 # via environment variable TINFOIL_API_KEY.
 
 model_list:
-  # DeepSeek V4 Flash — default model (1M context, tool calling)
-  - model_name: deepseek-v4-flash
+  # DeepSeek V4.1 Flash — default model (replaces V4 Flash, deprecated 2026-09-15)
+  - model_name: deepseek-v4-1-flash
     litellm_params:
-      model: openai/deepseek-v4-flash
+      model: openai/deepseek-v4-1-flash
       api_base: http://127.0.0.1:3301/v1
       api_key: os.environ/TINFOIL_API_KEY
 
@@ -32,7 +32,7 @@ router_settings:
   num_retries: 2
   timeout: 30
   fallbacks:
-    - deepseek-v4-flash:
+    - deepseek-v4-1-flash:
         - gpt-oss-120b
 
 general_settings: