Fix: Replace deprecated ephemeral with MessageFlags.Ephemeral

Fixes Discord.js v14 deprecation warning by replacing all
ephemeral: true usages with flags: [MessageFlags.Ephemeral].

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/commands/utility/owner.ts

@@ -1,4 +1,4 @@
-import { SlashCommandBuilder, EmbedBuilder } from 'discord.js';
+import { SlashCommandBuilder, EmbedBuilder, MessageFlags } from 'discord.js';
 import { Command } from '../../structures/Command.js';
 import { Deployer } from '../../structures/Deployer.js';
 
@@ -24,14 +24,14 @@ const command: Command = {
         if (!client.application?.owner) await client.application?.fetch();
 
         if (interaction.user.id !== client.application?.owner?.id) {
-            await interaction.reply({ content: 'Keine Berechtigung.', ephemeral: true });
+            await interaction.reply({ content: 'Keine Berechtigung.', flags: [MessageFlags.Ephemeral] });
             return;
         }
 
         const subcommand = interaction.options.getSubcommand();
 
         if (subcommand === 'deploy') {
-            await interaction.deferReply({ ephemeral: true });
+            await interaction.deferReply({ flags: [MessageFlags.Ephemeral] });
 
             try {
                 const count = await Deployer.deploy(client.user!.id, client.token!);
@@ -44,7 +44,7 @@ const command: Command = {
         }
 
         if (subcommand === 'stats') {
-            await interaction.deferReply({ ephemeral: true });
+            await interaction.deferReply({ flags: [MessageFlags.Ephemeral] });
 
             const uptime = process.uptime();
             const days = Math.floor(uptime / 86400);
@@ -69,7 +69,7 @@ const command: Command = {
         }
 
         if (subcommand === 'servers') {
-            await interaction.deferReply({ ephemeral: true });
+            await interaction.deferReply({ flags: [MessageFlags.Ephemeral] });
 
             const guilds = client.guilds.cache.map((guild: any) =>
                 `• **${guild.name}** \`(${guild.id})\` - ${guild.memberCount} Mitglieder`
@@ -97,7 +97,7 @@ const command: Command = {
                 const nextEmbed = new EmbedBuilder()
                     .setColor(0xf1c40f)
                     .setDescription(chunks[i].substring(0, 4000));
-                await interaction.followUp({ embeds: [nextEmbed], ephemeral: true });
+                await interaction.followUp({ embeds: [nextEmbed], flags: [MessageFlags.Ephemeral] });
             }
             return;
         }