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/AttendanceFixture.tsx

@@ -0,0 +1,79 @@
+export default function AttendanceFixture() {
+  return (
+    <div>
+      <div className="admin-page-header">
+        <div>
+          <h1 className="admin-page-title">Docházka</h1>
+          <p className="admin-page-subtitle">pondělí 28. dubna 2025</p>
+        </div>
+      </div>
+      <div className="attendance-layout">
+        <div className="attendance-main">
+          <div className="attendance-clock-card">
+            <div className="attendance-clock-header">
+              <div className="attendance-clock-status">
+                <span className="attendance-status-dot" />
+                <span>Nepracuji</span>
+              </div>
+              <div className="attendance-clock-time">08:30</div>
+            </div>
+            <div className="attendance-clock-actions">
+              <button className="admin-btn admin-btn-primary w-full">
+                Příchod
+              </button>
+              <button className="admin-btn admin-btn-secondary w-full">
+                Žádost o nepřítomnost
+              </button>
+            </div>
+          </div>
+        </div>
+        <div className="attendance-sidebar">
+          <div className="attendance-balance-card">
+            <h3 className="attendance-balance-title">Dovolená 2025</h3>
+            <div className="attendance-balance-value">
+              <span className="attendance-balance-number">12</span>
+              <span className="attendance-balance-unit">dnů</span>
+            </div>
+            <div className="attendance-balance-detail">
+              <span>Celkem: 160h</span>
+              <span>Čerpáno: 64h</span>
+            </div>
+            <div className="attendance-balance-bar">
+              <div
+                className="attendance-balance-progress"
+                style={{ width: "60%" }}
+              />
+            </div>
+          </div>
+          <div className="admin-stat-card">
+            <div className="admin-stat-icon danger">
+              <svg
+                width="24"
+                height="24"
+                viewBox="0 0 24 24"
+                fill="none"
+                stroke="currentColor"
+                strokeWidth="2"
+              >
+                <path d="M22 12h-4l-3 9L9 3l-3 9H2" />
+              </svg>
+            </div>
+            <div className="admin-stat-content">
+              <span className="admin-stat-label">Nemoc 2025</span>
+              <span className="admin-stat-value">16h čerpáno</span>
+            </div>
+          </div>
+          <div className="attendance-quick-links">
+            <h4 className="attendance-quick-title">Rychlé odkazy</h4>
+            <a className="attendance-quick-link">
+              <span>Moje žádosti</span>
+            </a>
+            <a className="attendance-quick-link">
+              <span>Historie docházky</span>
+            </a>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}