feat(ui): unified tab-switch animation - enter-only fade in TabPanel

One 0.2s enter-only fade (opacity + 6px rise) in the kit TabPanel covers
every tab switch (M3 clean-fade pattern; CSS animation so the global
reduced-motion kill switch applies). Orders and Invoices view switchers
now render through TabPanel (also fixes their dangling aria-controls).
Removed the inconsistent bespoke framer entrances inside tab content
(CompanySettings cascade, ReceivedInvoices card). Filter-style status
tabs (Projects/Offers/Invoices) deliberately keep the refetch dim only.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/admin/pages/Orders.tsx

@@ -5,7 +5,14 @@ import Typography from "@mui/material/Typography";
 import IconButton from "@mui/material/IconButton";
 import { useAuth } from "../context/AuthContext";
 import Forbidden from "../components/Forbidden";
-import { Button, Tabs, PageHeader, PageEnter, LoadingState } from "../ui";
+import {
+  Button,
+  Tabs,
+  TabPanel,
+  PageHeader,
+  PageEnter,
+  LoadingState,
+} from "../ui";
 import OrdersReceived from "./ReceivedOrders";
 
 const IssuedOrders = lazy(() => import("./IssuedOrders"));
@@ -170,18 +177,19 @@ export default function Orders() {
         </Box>
       </Box>
 
-      {activeTab === "vydane" ? (
+      <TabPanel value="vydane" current={activeTab} sx={{ pt: 0 }}>
         <Suspense fallback={<LoadingState />}>
           <IssuedOrders month={statsMonth} year={statsYear} />
         </Suspense>
-      ) : (
+      </TabPanel>
+      <TabPanel value="prijate" current={activeTab} sx={{ pt: 0 }}>
         <OrdersReceived
           month={statsMonth}
           year={statsYear}
           createOpen={createOpen}
           setCreateOpen={setCreateOpen}
         />
-      )}
+      </TabPanel>
     </PageEnter>
   );
 }