Add type hints to message handling functions for improved clarity

botbotbot/__main__.py

@@ -81,12 +81,12 @@ async def ai_reply(message):
         await message.reply(answer)
 
 
-async def react(message):
+async def react(message: discord.Message) -> None:
     await message.add_reaction(random.choice(message.guild.emojis))
 
 
 @bot.listen("on_message")
-async def on_message(message):
+async def on_message(message: discord.Message) -> None:
     if message.flags.ephemeral:
         return
 
@@ -105,7 +105,9 @@ async def on_message(message):
 
 
 @bot.listen("on_reaction_add")
-async def add_more_reaction(reaction, user):
+async def add_more_reaction(
+    reaction: discord.Reaction, user: discord.Member | discord.User
+) -> None:
     if random.random() < 50 / 100:
         logger.info(f"Copy reaction from {user}")
         await reaction.message.add_reaction(reaction.emoji)
@@ -123,7 +125,7 @@ async def react_message_edit(before: discord.Message, after: discord.Message) ->
 
 
 @bot.listen("on_message")
-async def rando_shuffle(message):
+async def rando_shuffle(message: discord.Message) -> None:
     if not message.flags.ephemeral and random.random() < 5 / 100 and message.guild:
         logger.info(f"Message shuffle after message from {message.author}")
         await try_shuffle(message.guild)