优化 Footer 组件中的动态按钮样式，简化按钮属性设置；在多个视图组件中更新动态按钮图标，提升用户交互体验。

src/layouts/components/Footer.vue

@@ -135,14 +135,7 @@ const showDynamicButton = computed(() => {
       <VCard v-if="showDynamicButton" class="footer-nav-card dynamic-btn-card border" rounded="pill">
         <VCardText class="footer-card-content">
           <!-- 各页面的动态按钮 -->
-          <VBtn
-            variant="text"
-            color="primary"
-            :ripple="false"
-            @click="dynamicButton?.action()"
-            rounded="pill"
-            class="footer-nav-btn"
-          >
+          <VBtn variant="text" :ripple="false" @click="dynamicButton?.action()" rounded="pill" class="footer-nav-btn">
             <div class="btn-content">
               <VIcon :icon="dynamicButton?.icon || 'mdi-plus'" size="24"></VIcon>
             </div>

src/views/plugin/PluginCardListView.vue

@@ -458,7 +458,7 @@ onMounted(async () => {
 
 // 使用动态按钮钩子
 useDynamicButton({
-  icon: 'mdi-view-dashboard-edit',
+  icon: 'mdi-magnify',
   onClick: () => {
     SearchDialog.value = true
   },

src/views/site/SiteCardListView.vue

@@ -88,7 +88,7 @@ onActivated(() => {
 
 // 使用动态按钮钩子
 useDynamicButton({
-  icon: 'mdi-view-dashboard-edit',
+  icon: 'mdi-plus',
   onClick: () => {
     siteAddDialog.value = true
   },

src/views/user/UserListView.vue

@@ -92,7 +92,6 @@ onActivated(() => {
       oper="add"
       max-width="45rem"
       persistent
-      z-index="1010"
       @save="onUserAdd"
       @close="addUserDialog = false"
     />