feat(extensions): add ZIP installation and unify action dialogs

frontend/src/features/plugins/PluginsView.vue

@@ -1,4 +1,7 @@
 <script setup lang="ts">
+import ActionDialog from '@/components/common/ActionDialog.vue'
+import { useActionDialog } from '@/composables/useActionDialog'
+const { actionDialog, resolveAction, askConfirm } = useActionDialog()
 import { Connection } from '@element-plus/icons-vue'
 import AppIcon from '@/components/common/AppIcon.vue'
 import ExtensionInstallDialog from '@/components/common/ExtensionInstallDialog.vue'
@@ -39,13 +42,13 @@ async function toggle(id: string, enabled: boolean) {
 }
 
 async function grant(id: string, permissions: string[]) {
-  if (!confirm(`${t('将授权：', 'Grant permissions: ')}${permissions.join(', ')}。${t('是否继续？', 'Continue?')}`)) return
+  if (!(await askConfirm(`${t('将授权：', 'Grant permissions: ')}${permissions.join(', ')}。${t('是否继续？', 'Continue?')}`))) return
   try { await pluginStore.grantPermissions(id, permissions) }
   catch (error) { actionError.value = error instanceof Error ? error.message : t('授权失败', 'Authorization failed') }
 }
 
 async function uninstall(id: string, name: string) {
-  if (!confirm(t(`卸载「${name}」将移除其全部 Contribution，是否继续？`, `Uninstalling “${name}” removes all its contributions. Continue?`))) return
+  if (!(await askConfirm(t(`卸载「${name}」将移除其全部 Contribution，是否继续？`, `Uninstalling “${name}” removes all its contributions. Continue?`)))) return
   try { await pluginStore.uninstallPlugin(id) }
   catch (error) { actionError.value = error instanceof Error ? error.message : t('卸载失败', 'Uninstall failed') }
 }
@@ -61,6 +64,7 @@ const hasCommandContribution = computed(() =>
 
 <template>
   <section class="feature-page">
+    <ActionDialog v-if="actionDialog" v-bind="actionDialog" @resolve="resolveAction" />
     <ExtensionInstallDialog v-if="showInstall" kind="Plugin" :install="pluginStore.installPlugin" @close="showInstall = false" @installed="showInstall = false; actionError = ''" />
     <header class="feature-header">
       <div><h1>{{ t('Plugin 与 MCP', 'Plugins and MCP') }}</h1><p>{{ t('管理插件生命周期、MCP Host、权限和受控 Contribution。', 'Manage plugin lifecycles, MCP hosts, permissions, and controlled contributions.') }}</p></div>