feat: init pydantic ai agent & context 7 mcp (#1240)

* feat: init pydantic ai agent & context 7 mcp

* feat: integrate MCP documentation search into data science pipeline evaluation

* fix: disable MCP documentation search and update related docstrings and defaults

* lint

* fix: correct prompt formatting and conditional blocks in pipeline_eval section

* lint

* feat: add query method to PAIAgent for synchronous agent execution

* fix: apply nest_asyncio for agent and update context7 query method

* lint

* lint

* lint

* lint

* docs: update MCP folder docstring and rename test class in test_pydantic.py

* refactor: centralize completion kwargs logic and update pydantic_ai integration

* fixbug

* typo

* fix: bug triggered by padantic-ai version backtracking.

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Co-authored-by: Linlang <Lv.Linlang@hotmail.com>

.gitignore

@@ -177,4 +177,4 @@ rdagent/app/benchmark/factor/example.json
 
 # UI Server resources
 videos/
-static/
+static/