fix: keep context tool backwards-compatible with pre-v48 agent bundles (#828)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: milind-jain-uipath

src/uipath_langchain/agent/tools/context_tool.py

@@ -150,7 +150,6 @@ def create_context_tool(
     llm: BaseChatModel | None = None,
     agent: LowCodeAgentDefinition | None = None,
 ) -> StructuredTool | BaseTool | None:
-    assert resource.context_type is not None
     tool_name = sanitize_tool_name(resource.name)
 
     if resource.context_type == AgentContextType.DATA_FABRIC_ENTITY_SET:

tests/agent/tools/test_context_tool.py

@@ -396,6 +396,19 @@ def test_case_insensitive_retrieval_mode(self, deep_rag_config):
         result = create_context_tool(deep_rag_config)
         assert isinstance(result, StructuredToolWithArgumentProperties)
 
+    def test_legacy_none_context_type_semantic_search(self, semantic_search_config):
+        # Agents packaged with storage-schema < v48 have no contextType field.
+        semantic_search_config.context_type = None
+        result = create_context_tool(semantic_search_config)
+        assert isinstance(result, StructuredToolWithOutputType)
+        assert result.name == "test_semantic_search"
+
+    def test_legacy_none_context_type_deep_rag(self, deep_rag_config):
+        deep_rag_config.context_type = None
+        result = create_context_tool(deep_rag_config)
+        assert isinstance(result, StructuredToolWithArgumentProperties)
+        assert result.name == "test_deep_rag"
+
 
 class TestHandleSemanticSearch:
     """Test cases for handle_semantic_search function."""