refactor: centralize llm backend configuration

config.yaml

@@ -36,3 +36,62 @@ wx_config:
   #微信管理账号，用于接收部分管理员指令
   #菜单调整和系统更新
   admin: [ "Jyunere" ]
+
+llm:
+  default_backend: "dify_workflow_chat"
+  backends:
+    dify_workflow_chat:
+      provider: "dify"
+      mode: "workflow"
+      api_key: "app-u5EnYq3ill19bm6pWJwGkY4D"
+      api_base_url: "http://192.168.2.240/v1"
+      endpoint: "workflows/run"
+      response_mode: "blocking"
+      request_timeout: 40
+    dify_workflow_member_context:
+      provider: "dify"
+      mode: "workflow"
+      api_key: "app-b2cj03DipGCIAmgBfcx7SKsT"
+      api_base_url: "http://192.168.2.240/v1"
+      endpoint: "workflows/run"
+      workflow_output_key: "text"
+      response_mode: "streaming"
+      request_timeout: 240
+    dify_workflow_message_summary:
+      provider: "dify"
+      mode: "workflow"
+      api_key: "app-shCA6bo5l2VDmnvhg2BtuJbk"
+      api_base_url: "http://192.168.2.240/v1"
+      endpoint: "workflows/run"
+      workflow_output_key: "text"
+      response_mode: "streaming"
+      request_timeout: 180
+    dify_chat_global_news:
+      provider: "dify"
+      mode: "chat"
+      api_key: "app-rhhKkbvHd2IAQoGX7xTzXZJj"
+      api_base_url: "http://192.168.2.240/v1"
+      endpoint: "chat-messages"
+      response_mode: "blocking"
+      request_timeout: 60
+    openai_compatible_game_task:
+      provider: "openai_compatible"
+      api_url: "https://ark.cn-beijing.volces.com/api/v3/chat/completions"
+      api_key: "b8586595-eb81-483d-8e91-a35cc789729e"
+      model: "doubao-1-5-lite-32k-250115"
+      stream: false
+      temperature: 0.2
+      max_tokens: 1000
+      timeout_seconds: 60
+    openai_compatible_ai_auto_response:
+      provider: "openai_compatible"
+      api_base_url: "http://192.168.2.240:3000/v1"
+      endpoint: "chat/completions"
+      api_key: "sk-hC6WMLAsTdItpywyrYdxT6pQ4E7NARGbUKuPWRH0zMheen9e"
+      model: "gpt-5.4"
+      stream: true
+      temperature: 0.35
+      max_tokens: 120
+      timeout_seconds: 45
+      max_retries: 3
+      retry_delay_seconds: 1.0