fix: use bot._commands registry to find prefix commands

- Changed on_message handler to use bot._commands.get(content) instead of bot.get_command()
- bot._commands is the internal command registry that stores commands by their exact name
- This properly routes prefix commands to their handlers without relying on process_commands()
- Fixes: commands were not being invoked because process_commands() doesn't route to prefix commands

main.py

@@ -200,7 +200,7 @@ async def on_command_error(ctx: commands.Context, error: commands.CommandError)
 
 @bot.event
 async def on_message(message: discord.Message) -> None:
-    """Handle text messages sent in channels."""
+    """Handle text messages sent in channels (prefix commands)."""
     # Ignore bot's own messages
     if message.author == bot.user:
         return
@@ -211,10 +211,34 @@ async def on_message(message: discord.Message) -> None:
 
     # Check if the message starts with the command prefix (exactly one !)
     if message.content.startswith("!."):
-        # Strip ONLY the first "!" character (not all of them)
+        # Strip ONLY the first '!' character
         content = message.content[1:]
-        # Now process the command
-        await bot.process_commands(message)
+
+        # Find the matching command by name from the bot's internal command registry
+        command = bot._commands.get(content)
+
+        if command is not None:
+            logger.debug(f"Found command: {command.name}")
+            # Create a minimal context for the command
+            ctx = commands.Context(bot=bot, channel=message.channel, message=message, guild=message.guild)
+            # Call the command directly (bypassing prefix parsing)
+            await command.invoke(ctx)
+        else:
+            logger.debug(f"No command found for: {content}")
+            await message.channel.send("Command not found. Type `!list-commands` for a list of commands.")
+    else:
+        # Message doesn't start with '!', check for normal prefix commands
+        if message.content.startswith("!"):
+            content = message.content[1:]
+            command = bot._commands.get(content)
+
+            if command is not None:
+                logger.debug(f"Found command: {command.name}")
+                ctx = commands.Context(bot=bot, channel=message.channel, message=message, guild=message.guild)
+                await command.invoke(ctx)
+            else:
+                logger.debug(f"No command found for: {content}")
+                await message.channel.send("Command not found. Type `!list-commands` for a list of commands.")
 
 
 @bot.event