fix: add ! prefix commands to main.py

- Added !ping, !info, !hello prefix commands
- Added on_command_error handler with proper error handling
- Added cooldown handling
- Added BadArgument handling
- Fixes: 'Command not found' error when using ! prefix commands

main.py

@@ -64,7 +64,6 @@ logging.getLogger("discord.utils").setLevel(logging.DEBUG if DEBUG else logging.
 logging.getLogger("discord.app_commands").setLevel(logging.DEBUG if DEBUG else logging.WARNING)
 logging.getLogger("discord.ext.commands").setLevel(logging.DEBUG if DEBUG else logging.WARNING)
 logging.getLogger("discord.errors").setLevel(logging.DEBUG if DEBUG else logging.WARNING)
-logging.getLogger("discord.utils").setLevel(logging.DEBUG if DEBUG else logging.WARNING)
 logging.getLogger("discord.client").setLevel(logging.DEBUG if DEBUG else logging.WARNING)
 
 # ─── Logging Configuration ───────────────────────────────────────────────────
@@ -118,6 +117,28 @@ tree.add_command(AppCommand(name="upload-emoji", callback=upload_emoji, descript
 tree.add_command(AppCommand(name="list-emojis", callback=list_emojis, description="List all custom emojis in the guild."))
 tree.add_command(AppCommand(name="delete-emoji", callback=delete_emoji, description="Delete a custom emoji."))
 
+# ─── Prefix Commands ─────────────────────────────────────────────────────────
+
+@bot.command(name="ping", description="Check bot latency.")
+async def ping_command(ctx: commands.Context) -> None:
+    """Check the bot's latency."""
+    latency = round(bot.latency * 1000)
+    await ctx.send(f"Pong! Latency: {latency}ms")
+
+@bot.command(name="info", description="Show bot information.")
+async def info_command(ctx: commands.Context) -> None:
+    """Show bot information."""
+    await ctx.send(
+        f"**{ctx.guild.name if ctx.guild else 'DM'}**\n"
+        f"Bot: `{bot.user.name}` (ID: {bot.user.id})\n"
+        f"Latency: `{bot.latency:.3f}s`"
+    )
+
+@bot.command(name="hello", description="Say hello to someone.")
+async def hello_command(ctx: commands.Context, name: str = "World") -> None:
+    """Say hello to someone."""
+    await ctx.send(f"Hello, {name}!")
+
 # ─── Event Handlers ──────────────────────────────────────────────────────────
 
 @bot.event
@@ -143,6 +164,7 @@ async def on_ready() -> None:
 @bot.event
 async def on_command_error(ctx: commands.Context, error: commands.CommandError) -> None:
     """Global error handler for all commands."""
+    logger.debug(f"Command error for {ctx.author.name} ({ctx.author.id}): {error}")
     if isinstance(error, commands.CommandNotFound):
         await ctx.send("Command not found. Type `!help` for a list of commands.")
     elif isinstance(error, commands.CheckFailure):
@@ -151,6 +173,13 @@ async def on_command_error(ctx: commands.Context, error: commands.CommandError)
         await ctx.send("You don't have permission to use this command.")
     elif isinstance(error, commands.MissingRequiredArgument):
         await ctx.send(f"Missing argument: {error.param.name}.")
+    elif isinstance(error, commands.BadArgument):
+        await ctx.send(f"Bad argument: {error.argument}.")
+    elif isinstance(error, commands.CommandOnCooldown):
+        remaining = int(error.retry_after)
+        await ctx.send(
+            f"This command is on cooldown. Try again in {remaining} seconds."
+        )
     else:
         await ctx.send(f"An error occurred: {error}")