feat: add DeepSeek extreme reasoning tier

agent_platform/config.py

@@ -26,6 +26,8 @@ def _float(name: str, default: float) -> float:
 class Settings:
     model_api_base_url: str
     model_api_key: str
+    deepseek_api_base_url: str
+    deepseek_api_key: str
     openwebui_forward_jwt_secret: str
     internal_provider_key: str
     internal_gateway_key: str
@@ -49,6 +51,8 @@ class Settings:
         return cls(
             model_api_base_url=os.getenv("MODEL_API_BASE_URL", "https://api.k1412.top").rstrip("/"),
             model_api_key=os.getenv("MODEL_API_KEY", ""),
+            deepseek_api_base_url=os.getenv("DEEPSEEK_API_BASE_URL", "https://api.deepseek.com").rstrip("/"),
+            deepseek_api_key=os.getenv("DEEPSEEK_API_KEY", ""),
             openwebui_forward_jwt_secret=os.getenv("OPENWEBUI_FORWARD_JWT_SECRET", ""),
             internal_provider_key=os.getenv("INTERNAL_PROVIDER_KEY", ""),
             internal_gateway_key=os.getenv("INTERNAL_GATEWAY_KEY", ""),
@@ -73,6 +77,7 @@ class Settings:
             name
             for name, value in (
                 ("MODEL_API_KEY", self.model_api_key),
+                ("DEEPSEEK_API_KEY", self.deepseek_api_key),
                 ("OPENWEBUI_FORWARD_JWT_SECRET", self.openwebui_forward_jwt_secret),
                 ("INTERNAL_PROVIDER_KEY", self.internal_provider_key),
                 ("INTERNAL_GATEWAY_KEY", self.internal_gateway_key),