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>

boneyard.config.json

@@ -0,0 +1,37 @@
+{
+  "breakpoints": [375, 768, 1280],
+  "out": "./src/admin/bones",
+  "color": "#e0e0e0",
+  "animate": "shimmer",
+  "shimmerColor": "#f0f0f0",
+  "speed": "1.2s",
+  "shimmerAngle": 110,
+  "wait": 3000,
+  "routes": [
+    "/",
+    "/users",
+    "/attendance",
+    "/attendance/history",
+    "/attendance/admin",
+    "/attendance/balances",
+    "/attendance/requests",
+    "/attendance/approval",
+    "/attendance/create",
+    "/trips",
+    "/trips/history",
+    "/trips/admin",
+    "/vehicles",
+    "/offers",
+    "/offers/new",
+    "/offers/customers",
+    "/offers/templates",
+    "/orders",
+    "/orders/1",
+    "/projects",
+    "/projects/80",
+    "/invoices",
+    "/invoices/new",
+    "/settings",
+    "/audit-log"
+  ]
+}