feat(mui): consistent staggered page entrance across all 43 route pages

Adopt the PageEnter wrapper as every page's outermost render element and remove the ad-hoc per-page entrance motion.div wrappers. Every page now enters the same way — all top-level sections rise+fade in, staggered — so nothing appears instantly and the motion is identical app-wide. Presentation-only: no data/logic/hooks/invalidate/permissions touched. Embedded sub-tabs (CompanySettings, ReceivedInvoices), Login (auth shell) and the dev UiKit are intentionally excluded. Gates: tsc -b --noEmit=0, build=0, vitest 152/152.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/admin/pages/LeaveApproval.tsx

@@ -2,7 +2,6 @@ import { useState } from "react";
 import { useQuery } from "@tanstack/react-query";
 import { useAuth } from "../context/AuthContext";
 import { useAlert } from "../context/AlertContext";
-import { motion } from "framer-motion";
 import Box from "@mui/material/Box";
 import Typography from "@mui/material/Typography";
 import { formatDate, formatDatetime } from "../utils/attendanceHelpers";
@@ -23,6 +22,7 @@ import {
   Field,
   TextField,
   PageHeader,
+  PageEnter,
   EmptyState,
   LoadingState,
   Tabs,
@@ -304,33 +304,21 @@ export default function LeaveApproval() {
   ];
 
   return (
-    <Box>
-      <motion.div
-        initial={{ opacity: 0, y: 12 }}
-        animate={{ opacity: 1, y: 0 }}
-        transition={{ duration: 0.25 }}
-      >
-        <PageHeader
-          title="Schvalování nepřítomnosti"
-          subtitle={
-            pendingCount > 0
-              ? `${pendingCount} ${czechPlural(pendingCount, "žádost čeká", "žádosti čekají", "žádostí čeká")} na schválení`
-              : "Žádné čekající žádosti"
-          }
-        />
-      </motion.div>
+    <PageEnter>
+      <PageHeader
+        title="Schvalování nepřítomnosti"
+        subtitle={
+          pendingCount > 0
+            ? `${pendingCount} ${czechPlural(pendingCount, "žádost čeká", "žádosti čekají", "žádostí čeká")} na schválení`
+            : "Žádné čekající žádosti"
+        }
+      />
 
-      <motion.div
-        initial={{ opacity: 0, y: 12 }}
-        animate={{ opacity: 1, y: 0 }}
-        transition={{ duration: 0.25, delay: 0.06 }}
-      >
-        <Tabs
-          value={activeTab}
-          onChange={(v) => setActiveTab(v as "pending" | "processed")}
-          tabs={tabs}
-        />
-      </motion.div>
+      <Tabs
+        value={activeTab}
+        onChange={(v) => setActiveTab(v as "pending" | "processed")}
+        tabs={tabs}
+      />
 
       {/* Pending Tab */}
       <TabPanel value="pending" current={activeTab}>
@@ -498,6 +486,6 @@ export default function LeaveApproval() {
           </>
         )}
       </Modal>
-    </Box>
+    </PageEnter>
   );
 }