make delete bm a ctx menu cmd

bot/exts/utilities/bookmark.py

@@ -77,6 +77,7 @@ def __init__(self, bot: Bot):
             callback=self._delete_bookmark_context_menu_callback,
         )
         self.bot.tree.add_command(self.book_mark_context_menu, guild=discord.Object(bot.guild_id))
+        self.bot.tree.add_command(self.delete_book_mark_context_menu)
 
     @staticmethod
     def build_success_reply_embed(target_message: discord.Message) -> discord.Embed:
@@ -147,7 +148,7 @@ async def _bookmark_context_menu_callback(self, interaction: discord.Interaction
     @whitelist_override(roles=(Roles.everyone,))
     @commands.cooldown(1, 30, commands.BucketType.channel)
     async def bookmark(self, ctx: commands.Context) -> None:
-        """Teach the invoker how to use the new context-menu based command for a smooth migration."""
+        """Teach the invoker how to use the new bookmark context-menu based command for a smooth migration."""
         await ctx.send(
             embed=self.build_error_embed(
                 "The bookmark text command has been replaced with a context menu command!\n\n"
@@ -162,24 +163,14 @@ async def delete_bookmark(
         self,
         ctx: commands.Context,
     ) -> None:
-        """
-        Delete the Sir-Lancebot message that the command invocation is replying to.
-
-        This command allows deleting any message sent by Sir-Lancebot in the user's DM channel with the bot.
-        The command invocation must be a reply to the message that is to be deleted.
-        """
-        target_message: Optional[discord.Message] = getattr(ctx.message.reference, "resolved", None)
-        if target_message is None:
-            raise commands.UserInputError("You must reply to the message from Sir-Lancebot you wish to delete.")
-
-        if not isinstance(ctx.channel, discord.DMChannel):
-            raise commands.UserInputError("You can only run this command your own DMs!")
-        elif target_message.channel != ctx.channel:
-            raise commands.UserInputError("You can only delete messages in your own DMs!")
-        elif target_message.author != self.bot.user:
-            raise commands.UserInputError("You can only delete messages sent by Sir Lancebot!")
-
-        await target_message.delete()
+        """Teach the invoker how to use the new delete bookmark context-menu based command for a smooth migration."""
+        await ctx.send(
+            embed=self.build_error_embed(
+                "The delete bookmark text command has been replaced with a context menu command!\n\n"
+                "To delete a bookmark simply right-click (press and hold on mobile) "
+                "on a bookmark message, open the 'Apps' menu, and click 'Delete bookmark'."
+            )
+        )
 
 
 async def setup(bot: Bot) -> None: