Refactor the code directory structure to better suit the current complexity

src/component/mail_environment/issue.py

@@ -1,8 +1,7 @@
 # define a knowledge base class
 import json
 import string
-from aios_kernel import AIStorage, Environment, SimpleAIFunction, CustomAIAgent, AgentPrompt, AgentMsg
-from knowledge import *
+from aios import *
 from .mail import MailStorage, Mail
 
 class IssueState(Enum):

src/component/mail_environment/local.py

@@ -2,8 +2,7 @@ import os
 import logging
 import json
 import string
-from knowledge import *
-from aios_kernel.storage import AIStorage
+from aios import *
 from .mail import Mail, MailStorage
 
 

src/component/mail_environment/mail.py

@@ -7,7 +7,7 @@ import datetime
 from bs4 import BeautifulSoup
 import sqlite3
 import html2text
-from knowledge import *
+from aios import *
 
 class Mail:
     def __init__(self, **kwargs) -> None:

src/component/mail_environment/spider.py

@@ -3,8 +3,7 @@ import logging
 import json
 import imaplib
 import mailparser
-from knowledge import *
-from aios_kernel.storage import AIStorage
+from aios import *
 
 
 class EmailSpider: