refactor(string): split utilities by responsibility

app/modules/wechat/wechatbot.py

@@ -20,7 +20,7 @@ from app.runtime.log import logger
 from app.schemas import CommingMessage
 from app.schemas.types import MessageChannel
 from app.adapters.network.http import RequestUtils
-from app.domain.string import StringUtils
+from app.foundation import size as size_tools
 
 
 class WeChatBot:
@@ -629,7 +629,7 @@ class WeChatBot:
                 f"{meta.resource_term} "
                 f"{meta.video_term} "
                 f"{meta.release_group} "
-                f"{StringUtils.str_filesize(torrent.size)} "
+                f"{size_tools.format_compact_size(torrent.size)} "
                 f"{torrent.volume_factor} "
                 f"{torrent.seeders}↑"
             )