feat: 完成项目助手与监控演示并修复聊天及云部署配置

backend/graph/agent.py

@@ -9,6 +9,7 @@ from langchain_core.messages import HumanMessage, AIMessage
 from config import get_rag_mode
 from graph.prompt_builder import build_system_prompt
 from graph.session_manager import session_manager
+from graph.chat_model_options import chat_model_options
 from tools import get_all_tools
 
 
@@ -39,6 +40,7 @@ class AgentManager:
             api_base=os.getenv("DEEPSEEK_BASE_URL", "https://api.deepseek.com"),
             temperature=0.7,
             streaming=True,
+            **chat_model_options(),
         )
 
         session_manager.initialize(base_dir)

backend/graph/chat_model_options.py

@@ -0,0 +1,12 @@
+"""Explicit chat-only provider compatibility, without exposing reasoning as answers."""
+import os
+
+
+def chat_model_options():
+    mode = os.getenv("CHAT_THINKING_MODE", "").strip().lower()
+    if mode not in ("", "disabled", "enabled"):
+        raise ValueError("CHAT_THINKING_MODE 只允许 disabled、enabled 或留空")
+    options = {"timeout": 60, "max_retries": 0}
+    if mode:
+        options["extra_body"] = {"thinking": {"type": mode}}
+    return options