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/base/design/src/css/global.css

@@ -16,6 +16,7 @@
   html {
     @apply text-foreground bg-background font-sans text-[100%];
 
+    background-color: hsl(var(--surface-canvas));
     font-variation-settings: normal;
     line-height: 1.15;
     text-size-adjust: 100%;

easyflow-ui-admin/packages/@core/base/design/src/design-tokens/dark.css

@@ -104,6 +104,7 @@
   /* header */
   --header: 220 18% 12.5%;
   --nav-surface: 220 18% 12.5%;
+  --nav-shell-surface: var(--nav-surface);
   --nav-surface-subtle: 219 18% 15.4%;
   --nav-border: 217 18% 23%;
   --nav-item-hover: 217 28% 18.8%;

easyflow-ui-admin/packages/@core/base/design/src/design-tokens/default.css

@@ -104,6 +104,7 @@
   /* header */
   --header: 212 100% 98.7%;
   --nav-surface: 212 100% 98.7%;
+  --nav-shell-surface: 211.2 86.2% 94.3%;
   --nav-surface-subtle: 211 84% 97.3%;
   --nav-border: 214 34% 89%;
   --nav-item-hover: 211 100% 96.3%;
@@ -133,6 +134,8 @@
   --glass-tint: 212 100% 98.9%;
   --glass-border: 0 0% 100%;
   --glass-blur: 20px;
+  /* 常驻大面积表面避免创建高开销背景模糊合成层 */
+  --persistent-surface-backdrop-filter: none;
   --radius-modal: 20px;
   --modal-surface: 0 0% 100%;
   --modal-surface-strong: 0 0% 100%;

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)',

easyflow-ui-admin/packages/effects/layouts/src/widgets/check-updates/check-updates.vue

@@ -20,6 +20,7 @@ const props = withDefaults(defineProps<Props>(), {
 });
 
 let isCheckingUpdates = false;
+let resumeCheckFrame: number | undefined;
 const currentVersionTag = ref('');
 const lastVersionTag = ref('');
 const timer = ref<ReturnType<typeof setInterval>>();
@@ -81,6 +82,7 @@ function handleNotice(versionTag: string) {
 }
 
 function start() {
+  stop();
   if (props.checkUpdatesInterval <= 0) {
     return;
   }
@@ -92,22 +94,47 @@ function start() {
   );
 }
 
-function handleVisibilitychange() {
-  if (document.hidden) {
-    stop();
-  } else {
-    if (!isCheckingUpdates) {
+function cancelResumeCheck() {
+  if (resumeCheckFrame === undefined) {
+    return;
+  }
+  cancelAnimationFrame(resumeCheckFrame);
+  resumeCheckFrame = undefined;
+}
+
+function scheduleResumeCheck() {
+  cancelResumeCheck();
+  // 页面恢复后先让浏览器完成两帧绘制，再发起版本检查请求。
+  resumeCheckFrame = requestAnimationFrame(() => {
+    resumeCheckFrame = requestAnimationFrame(() => {
+      resumeCheckFrame = undefined;
+      if (document.hidden || isCheckingUpdates) {
+        return;
+      }
       isCheckingUpdates = true;
       checkForUpdates().finally(() => {
         isCheckingUpdates = false;
         start();
       });
-    }
+    });
+  });
+}
+
+function handleVisibilitychange() {
+  if (document.hidden) {
+    cancelResumeCheck();
+    stop();
+  } else {
+    scheduleResumeCheck();
   }
 }
 
 function stop() {
+  if (timer.value === undefined) {
+    return;
+  }
   clearInterval(timer.value);
+  timer.value = undefined;
 }
 
 onMounted(() => {
@@ -116,6 +143,7 @@ onMounted(() => {
 });
 
 onUnmounted(() => {
+  cancelResumeCheck();
   stop();
   document.removeEventListener('visibilitychange', handleVisibilitychange);
 });