v1.5.6: boneyard-js skeleton migration, TanStack Query refactor, rate-limit config

- Replace hand-coded skeleton CSS/JSX with boneyard-js auto-generated bones
- Remove skeleton.css and @keyframes shimmer from base.css
- Add <Skeleton> wrappers with fixtures to all 25+ page components
- Generate 20 bone captures via boneyard CLI (CDP auth-gated capture)
- Refactor data fetching from useEffect+useState to TanStack Query
- Extract query hooks into src/admin/lib/queries/ and apiAdapter
- Add usePaginatedQuery hook replacing useApiCall/useListData
- Fix parseFloat || 0 anti-pattern in OfferDetail and OffersTemplates inputs
- Fix customer_id mandatory validation on offer creation
- Fix leave-requests comma-separated status filter (Prisma enum in: [])
- Add cross-entity cache invalidation for orders/offers/invoices/projects
- Make rate limits configurable via env vars (RATE_LIMIT_MAX, RATE_LIMIT_REFRESH, etc.)
- Add boneyard.config.json with routes and breakpoints

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/admin/hooks/usePaginatedQuery.ts

@@ -0,0 +1,44 @@
+import {
+  useQuery,
+  keepPreviousData,
+  useQueryClient,
+} from "@tanstack/react-query";
+import type { UseQueryOptions } from "@tanstack/react-query";
+
+interface PaginatedResult<T> {
+  data: T[];
+  pagination: {
+    total: number;
+    page: number;
+    per_page: number;
+    total_pages: number;
+  };
+}
+
+/**
+ * Wrapper around useQuery for paginated list endpoints.
+ * Accepts the return value of queryOptions() from lib/queries/*
+ * and extracts items + pagination from the response.
+ */
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export function usePaginatedQuery<T>(options: any) {
+  const query = useQuery({
+    ...options,
+    placeholderData: keepPreviousData,
+  } as UseQueryOptions<PaginatedResult<T>>);
+
+  const data = query.data as PaginatedResult<T> | undefined;
+
+  return {
+    items: (data?.data ?? []) as T[],
+    pagination: data?.pagination ?? null,
+    isPending: query.isPending,
+    isFetching: query.isFetching,
+    isPlaceholderData: query.isPlaceholderData,
+    isError: query.isError,
+    error: query.error,
+    refetch: query.refetch,
+  };
+}
+
+export { useQueryClient, useQuery, keepPreviousData };