Add accounts UI with list, create, edit, detail tabs for all sub-entities

Accounts list with paginated table, search, sort. Account detail page with
tabs for members, payment methods, tax exemptions, and processor links.
All sub-entities have create/edit dialogs and delete actions. Forms use
shared Zod schemas via react-hook-form.

packages/admin/src/api/accounts.ts

@@ -0,0 +1,37 @@
+import { queryOptions } from '@tanstack/react-query'
+import { api } from '@/lib/api-client'
+import type { Account } from '@/types/account'
+import type { PaginatedResponse, PaginationInput } from '@forte/shared/schemas'
+
+export const accountKeys = {
+  all: ['accounts'] as const,
+  lists: () => [...accountKeys.all, 'list'] as const,
+  list: (params: PaginationInput) => [...accountKeys.all, 'list', params] as const,
+  details: () => [...accountKeys.all, 'detail'] as const,
+  detail: (id: string) => [...accountKeys.all, 'detail', id] as const,
+}
+
+export function accountListOptions(params: PaginationInput) {
+  return queryOptions({
+    queryKey: accountKeys.list(params),
+    queryFn: () => api.get<PaginatedResponse<Account>>('/v1/accounts', params),
+  })
+}
+
+export function accountDetailOptions(id: string) {
+  return queryOptions({
+    queryKey: accountKeys.detail(id),
+    queryFn: () => api.get<Account>(`/v1/accounts/${id}`),
+  })
+}
+
+export const accountMutations = {
+  create: (data: Record<string, unknown>) =>
+    api.post<Account>('/v1/accounts', data),
+
+  update: (id: string, data: Record<string, unknown>) =>
+    api.patch<Account>(`/v1/accounts/${id}`, data),
+
+  delete: (id: string) =>
+    api.del<Account>(`/v1/accounts/${id}`),
+}