add dashscope support

nanobot/providers/litellm_provider.py

@@ -51,6 +51,8 @@ class LiteLLMProvider(LLMProvider):
                 os.environ.setdefault("GEMINI_API_KEY", api_key)
             elif "zhipu" in default_model or "glm" in default_model or "zai" in default_model:
                 os.environ.setdefault("ZHIPUAI_API_KEY", api_key)
+            elif "dashscope" in default_model or "qwen" in default_model.lower():
+                os.environ.setdefault("DASHSCOPE_API_KEY", api_key)
             elif "groq" in default_model:
                 os.environ.setdefault("GROQ_API_KEY", api_key)
         
@@ -95,6 +97,13 @@ class LiteLLMProvider(LLMProvider):
             model.startswith("openrouter/")
         ):
             model = f"zhipu/{model}"
+
+        # For DashScope/Qwen, ensure prefix is present
+        if ("qwen" in model.lower() or "dashscope" in model.lower()) and not (
+            model.startswith("dashscope/") or
+            model.startswith("openrouter/")
+        ):
+            model = f"dashscope/{model}"
         
         # For vLLM, use hosted_vllm/ prefix per LiteLLM docs
         # Convert openai/ prefix to hosted_vllm/ if user specified it