feat:support A2A protocol

protocol/a2a/app/README.md

@@ -13,7 +13,7 @@ This is an experimental integration of the A2A protocol (https://google.github.i
 
    ```bash
    cd OpenManus
-   python -m A2A.Manus.main
+   python -m protocol.a2a.app.main
    ```
 
 2. Clone A2A official repository and run A2A Client,there are two ways to use A2AClient——CLI and  Register A2A Agent Server in UI.(details at https://github.com/google/A2A):

protocol/a2a/app/README_zh.md

@@ -14,7 +14,7 @@
 
    ```bash
    cd OpenManus
-   python -m A2A.Manus.main
+   python -m protocol.a2a.app.main
    ```
 
 2. 拉取A2A官方库并运行A2A Client，有两种使用A2A客户端的方式——CLI以及在前端页面注册Agent服务。（详情参考https://github.com/google/A2A）:

protocol/a2a/app/agent_executor.py

@@ -14,7 +14,7 @@ from a2a.utils import (
     completed_task,
     new_artifact,
 )
-from A2A.Manus.agent import A2AManus
+from .agent import A2AManus
 from a2a.utils.errors import ServerError
 from typing import Callable, Awaitable
 

protocol/a2a/app/main.py

@@ -9,9 +9,9 @@ from a2a.types import (
     AgentSkill,
 )
 
-from A2A.Manus.agent_executor import ManusExecutor
+from .agent_executor import ManusExecutor
 
-from A2A.Manus.agent import A2AManus
+from .agent import A2AManus
 from app.tool.browser_use_tool import _BROWSER_DESCRIPTION
 from app.tool.str_replace_editor import _STR_REPLACE_EDITOR_DESCRIPTION
 from app.tool.terminate import _TERMINATE_DESCRIPTION