fix: 优化页面恢复渲染并统一导航壳配色

- 延迟页面恢复后的版本检查，并移除常驻大面积背景模糊

- 统一侧栏、顶部工具栏和标签栏的导航壳背景色

easyflow-ui-admin/packages/@core/ui-kit/layout-ui/src/components/layout-header.vue

@@ -47,7 +47,7 @@ const style = computed((): CSSProperties => {
   const right = !show || !fullWidth ? undefined : 0;
 
   return {
-    backgroundColor: 'transparent',
+    backgroundColor: 'hsl(var(--nav-shell-surface))',
     backgroundImage: 'none',
     backdropFilter: 'none',
     boxShadow: 'none',

easyflow-ui-admin/packages/@core/ui-kit/layout-ui/src/components/layout-sidebar.vue

@@ -123,10 +123,9 @@ const style = computed((): CSSProperties => {
 
   return {
     '--scroll-shadow': 'var(--surface-elevated)',
-    backgroundColor: 'hsl(var(--nav-surface-subtle) / 0.16)',
-    backgroundImage:
-      'linear-gradient(180deg, hsl(var(--nav-surface) / 0.3) 0%, hsl(var(--nav-surface-subtle) / 0.2) 28%, hsl(var(--glass-tint) / 0.12) 100%)',
-    backdropFilter: 'blur(calc(var(--glass-blur) * 1.5)) saturate(188%)',
+    backgroundColor: 'hsl(var(--nav-shell-surface))',
+    backgroundImage: 'none',
+    backdropFilter: 'var(--persistent-surface-backdrop-filter)',
     boxShadow:
       'inset 0 1px 0 hsl(var(--nav-sheen) / 0.14), inset -1px 0 0 hsl(var(--nav-border) / 0.08)',
     ...calcMenuWidthStyle(false),
@@ -142,10 +141,9 @@ const extraStyle = computed((): CSSProperties => {
   const { extraWidth, show, width, zIndex } = props;
 
   return {
-    backgroundColor: 'hsl(var(--nav-surface-subtle) / 0.12)',
-    backgroundImage:
-      'linear-gradient(180deg, hsl(var(--nav-surface-subtle) / 0.24) 0%, hsl(var(--glass-tint) / 0.12) 100%)',
-    backdropFilter: 'blur(calc(var(--glass-blur) * 1.34)) saturate(182%)',
+    backgroundColor: 'hsl(var(--nav-shell-surface))',
+    backgroundImage: 'none',
+    backdropFilter: 'var(--persistent-surface-backdrop-filter)',
     boxShadow:
       'inset 0 1px 0 hsl(var(--nav-sheen) / 0.12), inset -1px 0 0 hsl(var(--nav-border) / 0.08)',
     left: `${width}px`,

easyflow-ui-admin/packages/@core/ui-kit/layout-ui/src/components/layout-tabbar.vue

@@ -15,7 +15,7 @@ const props = withDefaults(defineProps<Props>(), {});
 const style = computed((): CSSProperties => {
   const { height } = props;
   return {
-    backgroundColor: 'transparent',
+    backgroundColor: 'hsl(var(--nav-shell-surface))',
     backgroundImage: 'none',
     backdropFilter: 'none',
     boxShadow: 'none',

easyflow-ui-admin/packages/@core/ui-kit/layout-ui/src/easyflow-layout.vue

@@ -334,8 +334,8 @@ const headerZIndex = computed(() => {
 const headerWrapperStyle = computed((): CSSProperties => {
   const fixed = headerFixed.value;
   return {
-    backdropFilter: 'blur(calc(var(--glass-blur) * 1.1)) saturate(158%)',
-    backgroundColor: 'hsl(var(--glass-tint) / 0.18)',
+    backdropFilter: 'var(--persistent-surface-backdrop-filter)',
+    backgroundColor: 'hsl(var(--glass-tint) / 0.9)',
     backgroundImage:
       'linear-gradient(180deg, hsl(var(--nav-surface) / 0.22), hsl(var(--glass-tint) / 0.08))',
     boxShadow: 'inset 0 -1px 0 hsl(var(--nav-border) / 0.05)',