Fix SSE route dependency and align architecture docs

backend/app/services/llm/deepseek_client.py

@@ -1,4 +1,4 @@
-"""DeepSeek LLM客户端 - OpenAI兼容API"""
+"""Provide service-layer logic for deepseek client."""
 
 import time
 from typing import List, Dict, Optional
@@ -6,20 +6,12 @@ from loguru import logger
 import httpx
 
 from .base_client import BaseLLMClient, LLMResponse, LLMConfig, LLMProvider
+# Keep provider-specific behavior explicit so debugging stays straightforward.
+
 
 
 class DeepSeekClient(BaseLLMClient):
-    """
-    DeepSeek API客户端（OpenAI兼容格式）
-
-    支持模型：
-    - deepseek-chat
-    - deepseek-coder
-    - deepseek-reasoner
-    - deepseek-v3
-    - deepseek-v3.2
-    - deepseek-v4-flash
-    """
+    """Represent the Deep Seek Client type."""
 
     SUPPORTED_MODELS = [
         "deepseek-chat",
@@ -31,13 +23,14 @@ class DeepSeekClient(BaseLLMClient):
     ]
 
     def __init__(self, config: LLMConfig):
+        """Initialize the Deep Seek Client instance."""
         if config.provider != LLMProvider.DEEPSEEK:
             raise ValueError(f"配置provider应为DEEPSEEK，实际为{config.provider}")
         super().__init__(config)
         self._init_client()
 
     def _init_client(self):
-        """初始化HTTP客户端"""
+        """Handle init client for this module for the Deep Seek Client instance."""
         self._client = httpx.Client(
             base_url=self.config.base_url,
             headers={
@@ -55,7 +48,7 @@ class DeepSeekClient(BaseLLMClient):
         temperature: Optional[float] = None,
         **kwargs
     ) -> LLMResponse:
-        """对话补全"""
+        """Handle chat for the Deep Seek Client instance."""
         start_time = time.time()
 
         try:
@@ -103,11 +96,11 @@ class DeepSeekClient(BaseLLMClient):
             )
 
     def get_available_models(self) -> List[str]:
-        """获取可用模型列表"""
+        """Return available models for the Deep Seek Client instance."""
         return self.SUPPORTED_MODELS
 
     def close(self):
-        """关闭客户端"""
+        """Release the resources held by this component."""
         if self._client:
             self._client.close()
 
@@ -118,7 +111,7 @@ def create_deepseek_client(
     base_url: str = "http://6.86.80.4:30080/v1",
     **kwargs
 ) -> DeepSeekClient:
-    """便捷函数：创建DeepSeek客户端"""
+    """Create deepseek client."""
     config = LLMConfig(
         provider=LLMProvider.DEEPSEEK,
         model=model,