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/fixtures/AttendanceLocationFixture.tsx

@@ -0,0 +1,49 @@
+export default function AttendanceLocationFixture() {
+  return (
+    <div>
+      <div className="admin-page-header">
+        <div style={{ display: "flex", alignItems: "center", gap: "0.75rem" }}>
+          <svg
+            width="32"
+            height="32"
+            viewBox="0 0 24 24"
+            fill="none"
+            stroke="currentColor"
+            strokeWidth="2"
+          >
+            <path d="M21 10c0 7-9 13-9 13s-9-6-9-13a9 9 0 0 1 18 0z" />
+            <circle cx="12" cy="10" r="3" />
+          </svg>
+          <h1 className="admin-page-title">Lokace</h1>
+        </div>
+      </div>
+      <div className="admin-card" style={{ height: 300, marginBottom: "1rem" }}>
+        <div
+          style={{
+            background: "var(--bg-secondary)",
+            height: "100%",
+            borderRadius: 8,
+          }}
+        />
+      </div>
+      <div
+        style={{ display: "grid", gridTemplateColumns: "1fr 1fr", gap: "1rem" }}
+      >
+        <div className="admin-card">
+          <div className="admin-card-body">
+            <h3 style={{ marginBottom: "0.5rem" }}>Poloha</h3>
+            <p>50.0755° N, 14.4378° E</p>
+            <p>Praha, Česká republika</p>
+          </div>
+        </div>
+        <div className="admin-card">
+          <div className="admin-card-body">
+            <h3 style={{ marginBottom: "0.5rem" }}>Čas záznamu</h3>
+            <p>1. 1. 2024 08:00</p>
+            <p>Přesnost: 10 m</p>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}