Refactor ephemeral message handling in ticket interactions

- Updated ticket command and interaction responses to utilize the new `ephemeral()` function for consistent ephemeral message handling.
- Enhanced error handling for member fetching in ticket interactions, ensuring proper responses when members are not found.
- Improved localization for new error messages related to member presence in ticket commands.
- Documented changes in phase tracking to reflect updates in ticket interaction responses.

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.',