feat: Require group prefix for hybrid commands

Added a _require_group_prefix check to all hybrid commands in each cog to ensure commands are only executed when invoked with the appropriate group prefix. Also updated error handling in bot.py to silently ignore CheckFailure errors. This improves command organization and prevents accidental command execution outside their intended context.

cogs/utilities/__init__.py

@@ -27,10 +27,21 @@ class Utilities(commands.GroupCog, name="utils"):
         else:
             await context.send(f"Unknown utilities command: {name}")
 
+    def _require_group_prefix(context: Context) -> bool:
+        if getattr(context, "interaction", None):
+            return True
+        group = getattr(getattr(context, "cog", None), "qualified_name", "").lower()
+        if not group:
+            return True
+        prefix = context.prefix or ""
+        content = context.message.content.strip().lower()
+        return content.startswith(f"{prefix}{group} ")
+
     @utilities_group.command(name="translate")
     async def utilities_group_translate(self, context: Context, text: str = None, to_lang: str = "en", from_lang: str = None):
         await self._invoke_hybrid(context, "translate", text=text, to_lang=to_lang, from_lang=from_lang)
 
+    @commands.check(_require_group_prefix)
     @commands.hybrid_command(
         name="translate",
         description="Translate text to another language"