feat: manage waitlist and remove group members

- Add group-waitlist module (list/promote/remove entries)
- Remove attendee with optional atomic promotion from waitlist
- Block removal when attendee has payments (attendee_has_payments)
- Waitlist detail modal matching members UI; optimistic add-to-waitlist
- Responsive tweaks for the members/waitlist tabs

packages/shared/src/schemas/waitlist.ts

@@ -50,4 +50,21 @@ export const CreateGroupWaitlistEntrySchema = z.object({
   email: z.string().trim().email('Email inválido').optional().or(z.literal('')),
   notes: z.string().trim().optional(),
 });
-export type CreateGroupWaitlistEntry = z.output<typeof CreateGroupWaitlistEntrySchema>;
+export type CreateGroupWaitlistEntry = z.output<typeof CreateGroupWaitlistEntrySchema>;
+
+export const GroupWaitlistQuerySchema = z.object({
+  page: pageSchema,
+  pageSize: pageSizeSchema,
+});
+export type GroupWaitlistQuery = z.output<typeof GroupWaitlistQuerySchema>;
+
+export const GroupWaitlistListSchema = z.object({
+  data: z.array(GroupWaitlistEntryDtoSchema),
+  pagination: paginationSchema,
+});
+export type GroupWaitlistList = z.output<typeof GroupWaitlistListSchema>;
+
+export const RemoveGroupWaitlistEntryResultSchema = z.object({
+  deleted: z.boolean(),
+});
+export type RemoveGroupWaitlistEntryResult = z.output<typeof RemoveGroupWaitlistEntryResultSchema>;