diff --git a/frontend/src/views/Home/Home.js b/frontend/src/views/Home/Home.js
index a1c3102..91eb7b1 100644
--- a/frontend/src/views/Home/Home.js
+++ b/frontend/src/views/Home/Home.js
@@ -35,22 +35,23 @@ export function useHome() {
   const message = ref('')
   const error = ref('')
   let eventSource = null
+  let refreshTimer = null
+  let refreshGeneration = 0
 
   const isLoggedIn = computed(() => Boolean(user.value && session.value))
   const canUpload = computed(() => user.value?.role === 'developer' || user.value?.role === 'admin')
   const isAdmin = computed(() => user.value?.role === 'admin')
   const isScoutPackage = computed(() => uploadForm.value.file?.name.toLowerCase().endsWith('.scout'))
   const platformOptions = ['windows', 'macos', 'linux', 'android', 'any']
-  const architectureOptions = computed(() => {
-    const platform = filters.value.platform || uploadForm.value.platform
-    const options = {
-      windows: ['amd64', 'arm64', '386'],
-      macos: ['amd64', 'arm64'],
-      linux: ['amd64', 'arm64', '386', 'armv7'],
-      android: ['arm64', 'armv7', '386'],
-    }
-    return options[platform] || ['amd64', 'arm64', '386', 'armv7', 'universal']
-  })
+  const architectureOptionsByPlatform = {
+    windows: ['amd64', 'arm64', '386'],
+    macos: ['amd64', 'arm64'],
+    linux: ['amd64', 'arm64', '386', 'armv7'],
+    android: ['arm64', 'armv7', '386'],
+  }
+  const universalArchitectureOptions = ['amd64', 'arm64', '386', 'armv7', 'universal']
+  const filterArchitectureOptions = computed(() => architectureOptionsByPlatform[filters.value.platform] || universalArchitectureOptions)
+  const uploadArchitectureOptions = computed(() => architectureOptionsByPlatform[uploadForm.value.platform] || universalArchitectureOptions)
   const channelOptions = ['stable', 'beta', 'dev']
 
   function roleText(role) {
@@ -110,6 +111,41 @@ export function useHome() {
     }
   }
 
+  async function refreshPackages() {
+    if (refreshTimer) {
+      clearTimeout(refreshTimer)
+      refreshTimer = null
+    }
+    const generation = ++refreshGeneration
+    await loadPackages()
+    if (generation === refreshGeneration) {
+      startNotifications()
+    }
+  }
+
+  function scheduleRefresh() {
+    if (refreshTimer) {
+      clearTimeout(refreshTimer)
+    }
+    refreshTimer = setTimeout(() => {
+      refreshTimer = null
+      void refreshPackages()
+    }, 180)
+  }
+
+  function normalizeFilterArchitecture() {
+    if (filters.value.architecture && !filterArchitectureOptions.value.includes(filters.value.architecture)) {
+      filters.value.architecture = ''
+    }
+    scheduleRefresh()
+  }
+
+  function normalizeUploadArchitecture() {
+    if (uploadForm.value.architecture && !uploadArchitectureOptions.value.includes(uploadForm.value.architecture)) {
+      uploadForm.value.architecture = ''
+    }
+  }
+
   async function selectPackage(item) {
     selectedPackage.value = item
     error.value = ''
@@ -168,7 +204,7 @@ export function useHome() {
       uploadForm.value.file = null
       const fileInput = document.querySelector('#package-file')
       if (fileInput) fileInput.value = ''
-      await loadPackages()
+      await refreshPackages()
     } catch (reason) {
       error.value = reason.message
     } finally {
@@ -321,6 +357,10 @@ export function useHome() {
   function stopNotifications() {
     eventSource?.close()
     eventSource = null
+    if (refreshTimer) {
+      clearTimeout(refreshTimer)
+      refreshTimer = null
+    }
   }
 
   return {
@@ -348,10 +388,15 @@ export function useHome() {
     isAdmin,
     isScoutPackage,
     platformOptions,
-    architectureOptions,
+    filterArchitectureOptions,
+    uploadArchitectureOptions,
     channelOptions,
     roleText,
     loadPackages,
+    refreshPackages,
+    scheduleRefresh,
+    normalizeFilterArchitecture,
+    normalizeUploadArchitecture,
     selectPackage,
     onFileChange,
     uploadPackage,
@@ -367,4 +412,3 @@ export function useHome() {
     stopNotifications,
   }
 }
-
diff --git a/frontend/src/views/Home/Home.vue b/frontend/src/views/Home/Home.vue
index ea97436..bbd9d58 100644
--- a/frontend/src/views/Home/Home.vue
+++ b/frontend/src/views/Home/Home.vue
@@ -1,5 +1,5 @@
 <script setup>
-import { onMounted, onUnmounted } from 'vue'
+import { onMounted, onUnmounted, watch } from 'vue'
 import { useHome } from './Home.js'
 import './Home.css'
 
@@ -27,10 +27,15 @@ const {
   isAdmin,
   isScoutPackage,
   platformOptions,
-  architectureOptions,
+  filterArchitectureOptions,
+  uploadArchitectureOptions,
   channelOptions,
   roleText,
   loadPackages,
+  refreshPackages,
+  scheduleRefresh,
+  normalizeFilterArchitecture,
+  normalizeUploadArchitecture,
   selectPackage,
   onFileChange,
   uploadPackage,
@@ -48,10 +53,10 @@ const {
 
 onMounted(async () => {
   await loadMe()
-  await loadPackages()
-  startNotifications()
+  await refreshPackages()
 })
 
+watch(filters, scheduleRefresh, { deep: true })
 onUnmounted(stopNotifications)
 </script>
 
@@ -80,16 +85,16 @@ onUnmounted(stopNotifications)
       </label>
       <label>
         <span>平台筛选</span>
-        <select v-model="filters.platform">
+        <select v-model="filters.platform" @change="normalizeFilterArchitecture">
           <option value="">全部平台</option>
           <option v-for="item in platformOptions" :key="item" :value="item">{{ item }}</option>
         </select>
       </label>
       <label>
         <span>架构筛选</span>
-        <select v-model="filters.architecture">
+        <select v-model="filters.architecture" @change="normalizeFilterArchitecture">
           <option value="">全部架构</option>
-          <option v-for="item in architectureOptions" :key="item" :value="item">{{ item }}</option>
+          <option v-for="item in filterArchitectureOptions" :key="item" :value="item">{{ item }}</option>
         </select>
       </label>
       <label>
@@ -103,7 +108,7 @@ onUnmounted(stopNotifications)
         <span>当前版本</span>
         <input v-model="filters.currentVersion" type="text" placeholder="例如：1.0.0" @keyup.enter="loadPackages" />
       </label>
-      <button class="secondary-button" type="button" @click="loadPackages">刷新包列表</button>
+      <button class="secondary-button" type="button" @click="refreshPackages">刷新包列表</button>
       <div v-if="isLoggedIn" class="user-summary">
         <span>{{ user.name }}（{{ roleText(user.role) }}）</span>
         <button class="text-button" type="button" @click="logout">退出</button>
@@ -252,16 +257,16 @@ onUnmounted(stopNotifications)
         </label>
         <label>
           <span>平台</span>
-          <select v-model="uploadForm.platform" :disabled="isScoutPackage">
+          <select v-model="uploadForm.platform" :disabled="isScoutPackage" @change="normalizeUploadArchitecture">
             <option value="">请选择平台</option>
             <option v-for="item in platformOptions" :key="item" :value="item">{{ item }}</option>
           </select>
         </label>
         <label>
           <span>架构</span>
-          <select v-model="uploadForm.architecture" :disabled="isScoutPackage">
+          <select v-model="uploadForm.architecture" :disabled="isScoutPackage" @change="normalizeUploadArchitecture">
             <option value="">请选择架构</option>
-            <option v-for="item in architectureOptions" :key="item" :value="item">{{ item }}</option>
+            <option v-for="item in uploadArchitectureOptions" :key="item" :value="item">{{ item }}</option>
           </select>
         </label>
         <label>
diff --git a/pkg/updater/updater_test.go b/pkg/updater/updater_test.go
index 8b97075..2206763 100644
--- a/pkg/updater/updater_test.go
+++ b/pkg/updater/updater_test.go
@@ -177,6 +177,68 @@ func TestHealthyCleanupUsesConfiguredRetention(t *testing.T) {
 	}
 }
 
+func TestPrepareCleansFailedStagingAndCanRetry(t *testing.T) {
+	api := newTestClient(t)
+	invalidManifest := scoutpkg.Manifest{
+		SchemaVersion: 1,
+		Name:          "demo-core",
+		Version:       "1.1.0",
+		Channel:       "stable",
+		PackageType:   "full",
+		Targets: []scoutpkg.Target{{
+			Platform:     "linux",
+			Architecture: "amd64",
+			Path:         "targets/linux/amd64",
+			Entrypoint:   "targets/linux/amd64/missing",
+		}},
+	}
+	if _, err := api.Upload(context.Background(), client.UploadRequest{
+		FileName: "invalid.scout",
+		File: bytes.NewReader(createScoutArchive(t, invalidManifest, map[string][]byte{
+			"targets/linux/amd64/payload": []byte("payload"),
+		})),
+	}); err != nil {
+		t.Fatal(err)
+	}
+
+	root := t.TempDir()
+	manager, err := New(Config{
+		Client:        api,
+		PackageName:   "demo-core",
+		RootDir:       root,
+		Platform:      "linux",
+		Architecture:  "amd64",
+		HealthTimeout: 10 * time.Millisecond,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := manager.Prepare(context.Background(), ""); err == nil {
+		t.Fatal("入口不存在的更新包应该准备失败")
+	}
+	staging, err := filepath.Glob(filepath.Join(root, "releases", ".staging-*"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(staging) != 0 {
+		t.Fatalf("失败后不应保留暂存目录: %v", staging)
+	}
+
+	if _, err := api.Upload(context.Background(), client.UploadRequest{
+		FileName: "valid.scout",
+		File:     bytes.NewReader(createScoutPackage(t, "1.2.0")),
+	}); err != nil {
+		t.Fatal(err)
+	}
+	prepared, err := manager.Prepare(context.Background(), "")
+	if err != nil {
+		t.Fatalf("清理失败暂存目录后应允许重试: %v", err)
+	}
+	if prepared.Version != "1.2.0" {
+		t.Fatalf("重试准备的版本错误: %s", prepared.Version)
+	}
+}
+
 func newTestClient(t *testing.T) *client.Client {
 	t.Helper()
 	store, err := registry.New(t.TempDir())
@@ -194,8 +256,6 @@ func newTestClient(t *testing.T) *client.Client {
 
 func createScoutPackage(t *testing.T, version string) []byte {
 	t.Helper()
-	buffer := bytes.NewBuffer(nil)
-	writer := zip.NewWriter(buffer)
 	manifest := scoutpkg.Manifest{
 		SchemaVersion: 1,
 		Name:          "demo-core",
@@ -209,6 +269,15 @@ func createScoutPackage(t *testing.T, version string) []byte {
 			Entrypoint:   "targets/linux/amd64/demo",
 		}},
 	}
+	return createScoutArchive(t, manifest, map[string][]byte{
+		"targets/linux/amd64/demo": []byte("new binary"),
+	})
+}
+
+func createScoutArchive(t *testing.T, manifest scoutpkg.Manifest, files map[string][]byte) []byte {
+	t.Helper()
+	buffer := bytes.NewBuffer(nil)
+	writer := zip.NewWriter(buffer)
 	manifestData, err := json.Marshal(manifest)
 	if err != nil {
 		t.Fatal(err)
@@ -220,12 +289,14 @@ func createScoutPackage(t *testing.T, version string) []byte {
 	if _, err := entry.Write(manifestData); err != nil {
 		t.Fatal(err)
 	}
-	entry, err = writer.Create("targets/linux/amd64/demo")
-	if err != nil {
-		t.Fatal(err)
-	}
-	if _, err := entry.Write([]byte("new binary")); err != nil {
-		t.Fatal(err)
+	for name, content := range files {
+		entry, err := writer.Create(name)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if _, err := entry.Write(content); err != nil {
+			t.Fatal(err)
+		}
 	}
 	if err := writer.Close(); err != nil {
 		t.Fatal(err)