apps/bot/src/index.ts

@@ -15,6 +15,7 @@ import { ensureRecurringJobs, startWorkers } from './jobs.js';
 import type { BotContext } from './types.js';
 import { startHealthServer } from './health.js';
 import { getGuildLocale } from './i18n.js';
+import { ephemeral } from './interaction-reply.js';
 import { t } from '@nexumi/shared';
 import { handleAutoModMessage } from './modules/automod/actions.js';
 import { registerLoggingEvents } from './modules/logging/events.js';
@@ -227,9 +228,9 @@ if (!isShard) {
         const message = t(locale, 'generic.error');
         if (interaction.isRepliable()) {
           if (interaction.replied || interaction.deferred) {
-            await interaction.followUp({ content: message, ephemeral: true });
+            await interaction.followUp({ content: message, ...ephemeral() });
           } else {
-            await interaction.reply({ content: message, ephemeral: true });
+            await interaction.reply({ content: message, ...ephemeral() });
           }
         }
       } catch (replyError) {

apps/bot/src/interaction-registry.ts

@@ -10,6 +10,7 @@ import type {
 import { decodeComponentCustomId, t, type DashboardModuleId } from '@nexumi/shared';
 import { env } from './env.js';
 import { getGuildLocale } from './i18n.js';
+import { ephemeral } from './interaction-reply.js';
 import { isModuleEnabled, moduleForComponent } from './module-gates.js';
 import { isMaintenanceMode } from './presence.js';
 import type { BotContext } from './types.js';
@@ -176,7 +177,7 @@ export async function routeComponentInteraction(
     if (!interaction.replied && !interaction.deferred) {
       await interaction.reply({
         content: maintenance.message?.trim() || t(locale, 'generic.maintenance'),
-        ephemeral: true
+        ...ephemeral()
       });
     }
     return true;
@@ -198,7 +199,7 @@ export async function routeComponentInteraction(
       if (!interaction.replied && !interaction.deferred) {
         await interaction.reply({
           content: t(locale, 'generic.moduleDisabled'),
-          ephemeral: true
+          ...ephemeral()
         });
       }
       return true;

apps/bot/src/modules/tickets/commands.ts

@@ -3,6 +3,7 @@ import { t, tf } from '@nexumi/shared';
 import type { SlashCommand } from '../../types.js';
 import { getGuildLocale } from '../../i18n.js';
 import { requirePermission } from '../../permissions.js';
+import { ephemeral } from '../../interaction-reply.js';
 import { ticketCommandData } from './command-definitions.js';
 import {
   addUserToTicket,
@@ -26,7 +27,7 @@ async function ensureManageGuild(
   locale: 'de' | 'en'
 ): Promise<boolean> {
   if (!interaction.inGuild()) {
-    await interaction.reply({ content: t(locale, 'generic.guildOnly'), ephemeral: true });
+    await interaction.reply({ content: t(locale, 'generic.guildOnly'), ...ephemeral() });
     return false;
   }
   return requirePermission(interaction, PermissionFlagsBits.ManageGuild, locale);
@@ -37,7 +38,7 @@ const ticketCommand: SlashCommand = {
   async execute(interaction, context) {
     const locale = await getGuildLocale(context.prisma, interaction.guildId);
     if (!interaction.inGuild()) {
-      await interaction.reply({ content: t(locale, 'generic.guildOnly'), ephemeral: true });
+      await interaction.reply({ content: t(locale, 'generic.guildOnly'), ...ephemeral() });
       return;
     }
 
@@ -54,7 +55,10 @@ const ticketCommand: SlashCommand = {
 
       const categories = await getGuildCategories(context, interaction.guildId!);
       if (categories.length === 0) {
-        await interaction.reply({ content: t(locale, 'ticket.error.no_categories'), ephemeral: true });
+        await interaction.reply({
+          content: t(locale, 'ticket.error.no_categories'),
+          ...ephemeral()
+        });
         return;
       }
 
@@ -62,7 +66,7 @@ const ticketCommand: SlashCommand = {
       if (!channel?.isTextBased() || channel.isDMBased()) {
         await interaction.reply({
           content: t(locale, 'ticket.error.invalid_channel'),
-          ephemeral: true
+          ...ephemeral()
         });
         return;
       }
@@ -73,7 +77,7 @@ const ticketCommand: SlashCommand = {
           title: name,
           description
         });
-        await interaction.reply({ content: t(locale, 'ticket.panel.created'), ephemeral: true });
+        await interaction.reply({ content: t(locale, 'ticket.panel.created'), ...ephemeral() });
       } catch (error) {
         if (error instanceof TicketPanelError) {
           const key =
@@ -82,7 +86,7 @@ const ticketCommand: SlashCommand = {
               : error.code === 'not_configured'
                 ? 'ticket.error.invalid_channel'
                 : 'ticket.error.missing_permission';
-          await interaction.reply({ content: t(locale, key), ephemeral: true });
+          await interaction.reply({ content: t(locale, key), ...ephemeral() });
           return;
         }
         throw error;
@@ -105,18 +109,28 @@ const ticketCommand: SlashCommand = {
       );
       await interaction.reply({
         content: tf(locale, 'ticket.category.created', { name: category.name }),
-        ephemeral: true
+        ...ephemeral()
       });
       return;
     }
 
     const ticket = await findTicketByChannel(context.prisma, interaction.channelId!);
     if (!ticket) {
-      await interaction.reply({ content: t(locale, 'ticket.error.not_in_ticket'), ephemeral: true });
+      await interaction.reply({
+        content: t(locale, 'ticket.error.not_in_ticket'),
+        ...ephemeral()
+      });
       return;
     }
 
-    const member = await interaction.guild!.members.fetch(interaction.user.id);
+    const member = await interaction.guild!.members.fetch(interaction.user.id).catch(() => null);
+    if (!member) {
+      await interaction.reply({
+        content: t(locale, 'ticket.error.member_not_found'),
+        ...ephemeral()
+      });
+      return;
+    }
 
     try {
       if (sub === 'close') {
@@ -131,40 +145,57 @@ const ticketCommand: SlashCommand = {
         const isOpener = ticket.openerId === interaction.user.id;
 
         if (!isStaff && !isOpener) {
-          await interaction.reply({ content: t(locale, 'ticket.error.not_staff'), ephemeral: true });
+          await interaction.reply({
+            content: t(locale, 'ticket.error.not_staff'),
+            ...ephemeral()
+          });
           return;
         }
 
         const reason = interaction.options.getString('reason') ?? undefined;
         await closeTicket(context, ticket, interaction.user.id, locale, reason);
-        await interaction.reply({ content: t(locale, 'ticket.close.success'), ephemeral: true });
+        await interaction.reply({ content: t(locale, 'ticket.close.success'), ...ephemeral() });
         return;
       }
 
       if (sub === 'claim') {
         await claimTicket(context, ticket, member, locale);
-        await interaction.reply({ content: t(locale, 'ticket.claim.success'), ephemeral: true });
+        await interaction.reply({ content: t(locale, 'ticket.claim.success'), ...ephemeral() });
         return;
       }
 
       if (sub === 'add') {
         const user = interaction.options.getUser('user', true);
-        const target = await interaction.guild!.members.fetch(user.id);
+        const target = await interaction.guild!.members.fetch(user.id).catch(() => null);
+        if (!target) {
+          await interaction.reply({
+            content: t(locale, 'ticket.error.member_not_found'),
+            ...ephemeral()
+          });
+          return;
+        }
         await addUserToTicket(context, ticket, member, target, locale);
         await interaction.reply({
           content: tf(locale, 'ticket.add.success', { user: `<@${user.id}>` }),
-          ephemeral: true
+          ...ephemeral()
         });
         return;
       }
 
       if (sub === 'remove') {
         const user = interaction.options.getUser('user', true);
-        const target = await interaction.guild!.members.fetch(user.id);
+        const target = await interaction.guild!.members.fetch(user.id).catch(() => null);
+        if (!target) {
+          await interaction.reply({
+            content: t(locale, 'ticket.error.member_not_found'),
+            ...ephemeral()
+          });
+          return;
+        }
         await removeUserFromTicket(context, ticket, member, target, locale);
         await interaction.reply({
           content: tf(locale, 'ticket.remove.success', { user: `<@${user.id}>` }),
-          ephemeral: true
+          ...ephemeral()
         });
         return;
       }
@@ -174,7 +205,7 @@ const ticketCommand: SlashCommand = {
         await renameTicket(context, ticket, member, name, locale);
         await interaction.reply({
           content: tf(locale, 'ticket.rename.success', { name }),
-          ephemeral: true
+          ...ephemeral()
         });
         return;
       }
@@ -186,14 +217,14 @@ const ticketCommand: SlashCommand = {
           content: tf(locale, 'ticket.priority.success', {
             priority: t(locale, `ticket.priority.${level}`)
           }),
-          ephemeral: true
+          ...ephemeral()
         });
       }
     } catch (error) {
       if (error instanceof TicketError) {
         await interaction.reply({
           content: t(locale, `ticket.error.${error.code}`),
-          ephemeral: true
+          ...ephemeral()
         });
         return;
       }

apps/bot/src/modules/tickets/interactions.ts

@@ -88,7 +88,14 @@ async function handleOpenTicketRequest(
   }
 
   try {
-    const member = await interaction.guild.members.fetch(interaction.user.id);
+    const member = await interaction.guild.members.fetch(interaction.user.id).catch(() => null);
+    if (!member) {
+      await interaction.reply({
+        content: t(locale, 'ticket.error.member_not_found'),
+        ...ephemeral()
+      });
+      return;
+    }
     const ticket = await openTicketForCategory(
       context,
       interaction.guild,
@@ -126,7 +133,14 @@ async function handleTicketControl(
     return;
   }
 
-  const member = await interaction.guild.members.fetch(interaction.user.id);
+  const member = await interaction.guild.members.fetch(interaction.user.id).catch(() => null);
+  if (!member) {
+    await interaction.reply({
+      content: t(locale, 'ticket.error.member_not_found'),
+      ...ephemeral()
+    });
+    return;
+  }
 
   try {
     if (interaction.isButton() && interaction.customId === TICKET_CTRL_CLOSE) {
@@ -177,7 +191,14 @@ async function handleTicketControl(
         await interaction.reply({ content: t(locale, 'ticket.error.not_found'), ...ephemeral() });
         return;
       }
-      const target = await interaction.guild.members.fetch(userId);
+      const target = await interaction.guild.members.fetch(userId).catch(() => null);
+      if (!target) {
+        await interaction.reply({
+          content: t(locale, 'ticket.error.member_not_found'),
+          ...ephemeral()
+        });
+        return;
+      }
       await addUserToTicket(context, ticket, member, target, locale);
       await interaction.reply({
         content: tf(locale, 'ticket.add.success', { user: `<@${userId}>` }),
@@ -192,7 +213,14 @@ async function handleTicketControl(
         await interaction.reply({ content: t(locale, 'ticket.error.not_found'), ...ephemeral() });
         return;
       }
-      const target = await interaction.guild.members.fetch(userId);
+      const target = await interaction.guild.members.fetch(userId).catch(() => null);
+      if (!target) {
+        await interaction.reply({
+          content: t(locale, 'ticket.error.member_not_found'),
+          ...ephemeral()
+        });
+        return;
+      }
       await removeUserFromTicket(context, ticket, member, target, locale);
       await interaction.reply({
         content: tf(locale, 'ticket.remove.success', { user: `<@${userId}>` }),
@@ -298,7 +326,14 @@ export async function handleTicketInteraction(
     }
 
     try {
-      const member = await interaction.guild.members.fetch(interaction.user.id);
+      const member = await interaction.guild.members.fetch(interaction.user.id).catch(() => null);
+      if (!member) {
+        await interaction.reply({
+          content: t(locale, 'ticket.error.member_not_found'),
+          ...ephemeral()
+        });
+        return;
+      }
       const ticket = await openTicketForCategory(
         context,
         interaction.guild,

apps/bot/src/modules/tickets/service.ts

@@ -71,6 +71,15 @@ export class TicketPanelError extends Error {
   }
 }
 
+function isUnknownChannelError(error: unknown): boolean {
+  return Boolean(
+    error &&
+      typeof error === 'object' &&
+      'code' in error &&
+      (error as { code: unknown }).code === 10003
+  );
+}
+
 function botCanPostPanel(
   channel: GuildBasedChannel,
   meId: string
@@ -707,7 +716,11 @@ async function fetchTicketMessages(
         timestamp: message.createdAt.toISOString()
       }));
   } catch (error) {
+    if (isUnknownChannelError(error)) {
+      logger.debug({ ticketId: ticket.id }, 'Ticket channel already gone while fetching messages');
+    } else {
       logger.warn({ error, ticketId: ticket.id }, 'Failed to fetch ticket messages');
+    }
     return [];
   }
 }
@@ -1123,10 +1136,14 @@ export async function closeTicket(
         await channel.delete(`Ticket ${ticket.id} closed`);
       }
     } catch (error) {
+      if (isUnknownChannelError(error)) {
+        logger.debug({ ticketId: ticket.id }, 'Ticket channel already gone while deleting');
+      } else {
         logger.warn({ error, ticketId: ticket.id }, 'Failed to delete ticket channel');
       }
     }
   }
+}
 
 export async function rateTicket(
   context: BotContext,

docs/PHASE-TRACKING.md

@@ -509,6 +509,7 @@
 - Control-Panel im Ticket: Claim, Close, User-Select Add/Remove (wie TempVoice-Pattern)
 - Opener darf schließen; Claim/Add/Remove nur Support-Staff
 - Prioritäts-Dropdown im Discord-Control-Panel (`ticket:ctrl:priority`)
+- Robustheit: Unknown Channel (10003) beim Close nur noch debug; Unknown Member (10007) bei Add/Remove/Interactions abgefangen; Ticket-Commands nutzen `ephemeral()` flags
 
 ### Manuell testen
 

packages/shared/src/index.ts

@@ -478,6 +478,7 @@ const de: Dictionary = {
   'ticket.error.no_parent_channel': 'Kein Elternkanal für Thread-Tickets konfiguriert.',
   'ticket.error.invalid_parent_channel': 'Der konfigurierte Elternkanal ist ungültig.',
   'ticket.error.not_found': 'Ticket nicht gefunden.',
+  'ticket.error.member_not_found': 'Mitglied nicht auf dem Server gefunden.',
   'ticket.error.already_rated': 'Du hast dieses Ticket bereits bewertet.',
   'birthdays.error.invalidDate': 'Ungültiges Datum. Prüfe Tag, Monat und optionales Jahr.',
   'birthdays.error.invalidTimezone': 'Ungültige Zeitzone. Nutze z. B. Europe/Berlin.',
@@ -1090,6 +1091,7 @@ const en: Dictionary = {
   'ticket.error.no_parent_channel': 'No parent channel configured for thread tickets.',
   'ticket.error.invalid_parent_channel': 'The configured parent channel is invalid.',
   'ticket.error.not_found': 'Ticket not found.',
+  'ticket.error.member_not_found': 'Member is not on this server.',
   'ticket.error.already_rated': 'You already rated this ticket.',
   'birthdays.error.invalidDate': 'Invalid date. Check day, month, and optional year.',
   'birthdays.error.invalidTimezone': 'Invalid timezone. Use e.g. Europe/Berlin.',