Implement forced tool selection in AIClient and OpenAIModel, enhancing tool invocation capabilities. Added methods for extracting forced tool names from user messages and updated logging to reflect forced tool usage. Improved error handling for timeout scenarios in message handling and model interactions, ensuring better user feedback and robustness.

src/handlers/message_handler_ai.py

@@ -102,7 +102,7 @@ class MessageHandler:
             f"{command_name} add <model_name>  （保持 provider/api_base/api_key 不变）\n"
             f"{command_name} add <key> <provider> <model_name> [api_base]\n"
             f"{command_name} add <key> <json>\n"
-            "  json 字段：provider, model_name, api_base, api_key, temperature, max_tokens, top_p\n"
+            "  json 字段：provider, model_name, api_base, api_key, temperature, max_tokens, top_p, timeout\n"
             f"{command_name} switch <key|index>\n"
             f"{command_name} remove <key|index>"
         )