Fix remaining cog -> extension renames

jarvis/client.py

@@ -775,10 +775,12 @@ class Jarvis(Client):
     async def on_button(self, event: Button) -> None:
         """Process button events."""
         context = event.context
+
+        if not context.custom_id.startswith("modcase|"):
+            return  # await super().on_button(event)
+
         if not context.deferred and not context.responded:
             await context.defer(ephemeral=True)
-        if not context.custom_id.startswith("modcase|"):
-            return await super().on_button(event)
 
         if not context.author.has_permission(Permissions.MODERATE_MEMBERS):
             return

jarvis/cogs/botutil.py

@@ -20,7 +20,7 @@ class BotutilCog(Extension):
     def __init__(self, bot: Client):
         self.bot = bot
         self.logger = logging.getLogger(__name__)
-        self.add_cog_check(self.is_owner)
+        self.add_ext_check(self.is_owner)
 
     async def is_owner(self, ctx: PrefixedContext) -> bool:
         """Checks if author is bot owner."""

jarvis/utils/cogs.py

@@ -20,7 +20,7 @@ class ModcaseCog(Extension):
     def __init__(self, bot: Client):
         self.bot = bot
         self.logger = logging.getLogger(__name__)
-        self.add_cog_postrun(self.log)
+        self.add_extension_postrun(self.log)
 
     async def log(self, ctx: InteractionContext, *_args: list, **kwargs: dict) -> None:
         """