fix(redesign): sidebar position:fixed + main padding-left — restore main content visibility

Hotfix: после Task 12 замены v-navigation-drawer на plain <aside> sidebar остался position:static и толкал v-main в flow ниже (y=901), весь контент уезжал за viewport. Добавлен .ld-sidebar position:fixed top:0 left:0 height:100vh z-index:1006 + .app-main padding-left:232px. Verified via Playwright snapshot — Dashboard KPI/charts отрисованы корректно.

app/resources/js/components/layout/AppSidebar.vue

@@ -109,9 +109,14 @@ defineExpose({ navGroups });
     color: #E8E2D4;
     padding: 20px 14px;
     width: 232px;
-    min-height: 100vh;
+    height: 100vh;
     display: flex;
     flex-direction: column;
+    position: fixed;
+    top: 0;
+    left: 0;
+    z-index: 1006;
+    overflow-y: auto;
 }
 
 .ld-sidebar__brand {

app/resources/js/layouts/AppLayout.vue

@@ -81,5 +81,6 @@ usePolling(loadReminderCounts, { intervalMs: 60_000, enabled: true });
 <style scoped>
 .app-main {
     background: #f6f3ec;
+    padding-left: 232px;
 }
 </style>