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/DashboardFixture.tsx

@@ -0,0 +1,94 @@
+export default function DashboardFixture() {
+  return (
+    <div>
+      <div className="admin-page-header">
+        <div>
+          <h1 className="admin-page-title">Dashboard</h1>
+          <p className="admin-page-subtitle">Přehled</p>
+        </div>
+      </div>
+      <div
+        className="dash-kpi-grid"
+        style={{
+          display: "grid",
+          gridTemplateColumns: "repeat(4, 1fr)",
+          gap: "1rem",
+          marginBottom: "1rem",
+        }}
+      >
+        {["Nabídky", "Objednávky", "Faktury", "Projekty"].map((label, i) => (
+          <div
+            key={i}
+            className="dash-kpi-card"
+            style={{
+              padding: "1.25rem",
+              borderRadius: 10,
+              background: "var(--bg-secondary)",
+            }}
+          >
+            <div style={{ fontSize: "0.875rem", marginBottom: "0.25rem" }}>
+              {label}
+            </div>
+            <div style={{ fontSize: "1.5rem", fontWeight: 600 }}>12</div>
+            <div style={{ fontSize: "0.75rem" }}>tento měsíc</div>
+          </div>
+        ))}
+      </div>
+      <div
+        className="dash-quick-actions"
+        style={{ display: "flex", gap: "0.5rem", marginBottom: "1rem" }}
+      >
+        {["Nová nabídka", "Nová faktura", "Zapsat docházku"].map((label, i) => (
+          <button
+            key={i}
+            className="admin-btn admin-btn-secondary"
+            style={{ flex: 1 }}
+          >
+            {label}
+          </button>
+        ))}
+      </div>
+      <div
+        style={{
+          display: "grid",
+          gridTemplateColumns: "2fr 1fr",
+          gap: "1rem",
+          marginBottom: "1rem",
+        }}
+      >
+        <div className="admin-card" style={{ minHeight: 320 }}>
+          <div className="admin-card-body">
+            <h3 className="admin-card-title">Docházka dnes</h3>
+            <div style={{ height: 200 }} />
+          </div>
+        </div>
+        <div style={{ display: "flex", flexDirection: "column", gap: "1rem" }}>
+          <div className="admin-card" style={{ minHeight: 150 }}>
+            <div className="admin-card-body">
+              <h3 className="admin-card-title">Aktivita</h3>
+            </div>
+          </div>
+          <div className="admin-card" style={{ minHeight: 150 }}>
+            <div className="admin-card-body">
+              <h3 className="admin-card-title">Profil</h3>
+            </div>
+          </div>
+        </div>
+      </div>
+      <div
+        style={{ display: "grid", gridTemplateColumns: "1fr 1fr", gap: "1rem" }}
+      >
+        <div className="admin-card" style={{ minHeight: 200 }}>
+          <div className="admin-card-body">
+            <h3 className="admin-card-title">Relace</h3>
+          </div>
+        </div>
+        <div className="admin-card" style={{ minHeight: 200 }}>
+          <div className="admin-card-body">
+            <h3 className="admin-card-title">Poslední aktivity</h3>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}