style: unify code formatting and import order

- Remove trailing whitespace and normalize blank lines
- Unify string quotes and line breaks for long lines
- Sort imports alphabetically across modules

nanobot/channels/slack.py

@@ -5,11 +5,10 @@ import re
 from typing import Any
 
 from loguru import logger
-from slack_sdk.socket_mode.websockets import SocketModeClient
 from slack_sdk.socket_mode.request import SocketModeRequest
 from slack_sdk.socket_mode.response import SocketModeResponse
+from slack_sdk.socket_mode.websockets import SocketModeClient
 from slack_sdk.web.async_client import AsyncWebClient
-
 from slackify_markdown import slackify_markdown
 
 from nanobot.bus.events import OutboundMessage