🔧 chore(context): change default model from qwen-turbo to qwen-flash

- Updated default model to "qwen:qwen-flash" in context.py and documentation files
- Modified README and CLAUDE.md to reflect new default model name
- Removed references to TestModels with specific model names in tests
- Adjusted test code to use context with default model without explicit test model overrides
- Ensured consistency across internationalized README_CN.md and README.md files

Author: webup

CLAUDE.md

@@ -60,7 +60,7 @@ make dev_ui                 # Start LangGraph development server with UI
 - **Model Providers**: `ANTHROPIC_API_KEY`, `OPENAI_API_KEY`, `DASHSCOPE_API_KEY` (for Qwen models)
 - **Optional**: `REGION` (set to `prc` or `international` for Qwen API endpoints)
 - **Optional**: `ENABLE_DEEPWIKI=true` to enable DeepWiki MCP documentation tools
-- **Default Model**: Uses `qwen:qwen-turbo` as default model (configurable via `MODEL` environment variable)
+- **Default Model**: Uses `qwen:qwen-flash` as default model (configurable via `MODEL` environment variable)
 
 ## Key Files and Their Purposes
 

README.md

@@ -119,7 +119,7 @@ The primary [search tool](./src/common/tools.py) uses [Tavily](https://tavily.co
 
 ## Model Configuration
 
-The template uses `qwen:qwen-turbo` as the default model, defined in [`src/common/context.py`](./src/common/context.py). You can configure different models in three ways:
+The template uses `qwen:qwen-flash` as the default model, defined in [`src/common/context.py`](./src/common/context.py). You can configure different models in three ways:
 
 1. **Runtime Context** (recommended for programmatic usage)
 2. **Environment Variables** 
@@ -240,7 +240,7 @@ In LangGraph Studio, configure models through [Assistant management](https://doc
 "openai:gpt-4o"
 
 # Qwen models (with regional support)
-"qwen:qwen-turbo"          # Default model
+"qwen:qwen-flash"          # Default model
 "qwen:qwen-plus"           # Balanced performance
 "qwen:qwq-32b-preview"     # Reasoning model
 "qwen:qvq-72b-preview"     # Multimodal reasoning

README_CN.md

@@ -130,7 +130,7 @@ ENABLE_DEEPWIKI=true
 
 ## 模型配置
 
-模板使用 `qwen:qwen-turbo` 作为默认模型，定义在 [`src/common/context.py`](./src/common/context.py) 中。您可以通过三种方式配置不同的模型：
+模板使用 `qwen:qwen-flash` 作为默认模型，定义在 [`src/common/context.py`](./src/common/context.py) 中。您可以通过三种方式配置不同的模型：
 
 1. **运行时上下文**（编程使用推荐）
 2. **环境变量**
@@ -175,7 +175,7 @@ MODEL=anthropic:claude-3.5-haiku
 "openai:gpt-4o"
 
 # 通义千问模型（支持区域配置）
-"qwen:qwen-turbo"          # 默认模型
+"qwen:qwen-flash"          # 默认模型
 "qwen:qwen-plus"           # 平衡性能
 "qwen:qwq-32b-preview"     # 推理模型
 "qwen:qvq-72b-preview"     # 多模态推理

src/common/context.py

@@ -21,7 +21,7 @@ class Context:
     )
 
     model: Annotated[str, {"__template_metadata__": {"kind": "llm"}}] = field(
-        default="qwen:qwen-turbo",
+        default="qwen:qwen-flash",
         metadata={
             "description": "The name of the language model to use for the agent's main interactions. "
             "Should be in the form: provider:model-name."

tests/e2e_tests/test_deepwiki.py

@@ -2,15 +2,13 @@
 
 import pytest
 
-from tests.test_data import TestModels
 
 
 @pytest.fixture
 async def assistant_deepwiki_disabled(langgraph_client):
     """Create an assistant with deepwiki explicitly disabled."""
     config = {
         "configurable": {
-            "model": TestModels.QWEN_TURBO,
             "enable_deepwiki": False,
             "system_prompt": "You are a helpful AI assistant.",
         }
@@ -27,7 +25,6 @@ async def assistant_deepwiki_enabled(langgraph_client):
     """Create an assistant with deepwiki explicitly enabled."""
     config = {
         "configurable": {
-            "model": TestModels.QWEN_TURBO,
             "enable_deepwiki": True,
             "system_prompt": "You are a helpful AI assistant with access to deepwiki tools. When asked to use deepwiki tools, you must use them to get current documentation.",
         }
@@ -317,7 +314,6 @@ async def test_deepwiki_configuration_persistence_e2e(
         input_data = {
             "messages": [{"role": "human", "content": "Hello, please keep it brief"}],
             "configurable": {
-                "model": TestModels.QWEN_PLUS,
                 "enable_deepwiki": True,
                 "max_search_results": 3,
                 "system_prompt": "You are a helpful AI assistant with deepwiki access.",

tests/integration_tests/test_deepwiki.py

@@ -7,7 +7,6 @@
 
 from common.context import Context
 from common.mcp import MCP_SERVERS, clear_mcp_cache, get_deepwiki_tools
-from tests.test_data import TestModels
 
 
 class TestMCPIntegration:
@@ -29,15 +28,15 @@ def test_mcp_cache_management(self) -> None:
     @patch.dict(os.environ, {"ENABLE_DEEPWIKI": "false"}, clear=True)
     def test_context_with_deepwiki_disabled(self) -> None:
         """Test context creation with deepwiki explicitly disabled."""
-        context = Context(enable_deepwiki=False, model=TestModels.QWEN_PLUS)
+        context = Context(enable_deepwiki=False)
         # Environment variable overrides explicit setting only if explicit value equals default
         # Since we explicitly set enable_deepwiki=False and default is False, no override should occur
         assert not context.enable_deepwiki
 
     @patch.dict(os.environ, {"ENABLE_DEEPWIKI": "true"}, clear=False)
     def test_context_with_deepwiki_enabled_via_env(self) -> None:
         """Test context creation with deepwiki enabled via environment."""
-        context = Context(model=TestModels.QWEN_PLUS)
+        context = Context()
         # Environment variable should be converted to boolean when current value equals default
         assert context.enable_deepwiki
 
@@ -57,13 +56,13 @@ class TestDeepWikiConfiguration:
 
     def test_deepwiki_context_field_exists(self) -> None:
         """Test that the enable_deepwiki field exists in Context."""
-        context = Context(model=TestModels.QWEN_PLUS)
+        context = Context()
         assert hasattr(context, "enable_deepwiki")
 
     def test_deepwiki_can_be_configured(self) -> None:
         """Test that deepwiki can be explicitly enabled and disabled."""
-        context_disabled = Context(enable_deepwiki=False, model=TestModels.QWEN_PLUS)
-        context_enabled = Context(enable_deepwiki=True, model=TestModels.QWEN_PLUS)
+        context_disabled = Context(enable_deepwiki=False)
+        context_enabled = Context(enable_deepwiki=True)
 
         # These should not be the same
         assert context_disabled.enable_deepwiki != context_enabled.enable_deepwiki

tests/integration_tests/test_graph.py

@@ -1,15 +1,12 @@
 from common.context import Context
 from react_agent import graph
-from tests.test_data import TestModels
 
 
 async def test_react_agent_simple_passthrough() -> None:
     """Test that the agent can answer a simple question about LangChain founder."""
     res = await graph.ainvoke(
         {"messages": [("user", "Who is the founder of LangChain?")]},  # type: ignore
-        context=Context(
-            model=TestModels.QWEN_TURBO, system_prompt="You are a helpful AI assistant."
-        ),
+        context=Context(system_prompt="You are a helpful AI assistant."),
     )
 
     # Should have user message + AI response