feat: config max_search_results for search engine (#192)

* feat: implement UI

* feat: config max_search_results for search engine via api

---------

Co-authored-by: Henry Li <henry1943@163.com>

src/agents/__init__.py

@@ -1,6 +1,6 @@
 # Copyright (c) 2025 Bytedance Ltd. and/or its affiliates
 # SPDX-License-Identifier: MIT
 
-from .agents import research_agent, coder_agent
+from .agents import create_agent
 
-__all__ = ["research_agent", "coder_agent"]
+__all__ = ["create_agent"]

src/agents/agents.py

@@ -4,12 +4,6 @@
 from langgraph.prebuilt import create_react_agent
 
 from src.prompts import apply_prompt_template
-from src.tools import (
-    crawl_tool,
-    python_repl_tool,
-    web_search_tool,
-)
-
 from src.llms.llm import get_llm_by_type
 from src.config.agents import AGENT_LLM_MAP
 
@@ -23,10 +17,3 @@ def create_agent(agent_name: str, agent_type: str, tools: list, prompt_template:
         tools=tools,
         prompt=lambda state: apply_prompt_template(prompt_template, state),
     )
-
-
-# Create agents using the factory function
-research_agent = create_agent(
-    "researcher", "researcher", [web_search_tool, crawl_tool], "researcher"
-)
-coder_agent = create_agent("coder", "coder", [python_repl_tool], "coder")