diff --git a/src/components/agent/AgentAssistantPanel.vue b/src/components/agent/AgentAssistantPanel.vue
index f6f30782..9b5fd231 100644
--- a/src/components/agent/AgentAssistantPanel.vue
+++ b/src/components/agent/AgentAssistantPanel.vue
@@ -235,7 +235,7 @@ const slashCommandQuery = computed(() => {
 // 根据输入内容过滤可用斜杠命令。
 const filteredSlashCommands = computed(() => {
   const query = slashCommandQuery.value
-  if (!query) return slashCommands.value.slice(0, 8)
+  if (!query) return slashCommands.value
 
   return slashCommands.value
     .filter(command => {
@@ -243,7 +243,6 @@ const filteredSlashCommands = computed(() => {
 
       return haystack.includes(query)
     })
-    .slice(0, 8)
 })
 // 判断是否展示命令建议浮层。
 const showSlashCommandMenu = computed(
@@ -253,6 +252,10 @@ const showSlashCommandMenu = computed(
     !recording.value &&
     (filteredSlashCommands.value.length > 0 || slashCommandsLoading.value),
 )
+// 根据智能体处理状态切换输入框背景提示。
+const inputPlaceholder = computed(() =>
+  sending.value ? t('agentAssistant.processingPlaceholder') : t('agentAssistant.placeholder'),
+)
 const recordingTimeText = computed(() => {
   const seconds = Math.max(0, recordingDuration.value)
   const minutes = Math.floor(seconds / 60)
@@ -1616,6 +1619,7 @@ async function handleChoiceClick(message: AgentChatMessage, choice: AgentChoiceC
       refreshMessageList()
       persistState()
       await streamAgentMessage(agentMessage, [], [], [], [], {
+        echoUser: false,
         displayText: choiceSelection.selected_label || choiceSelection.selected_description,
         choiceSelection,
         originalMessageId: String(result.data?.original_message_id || message.id),
@@ -1641,6 +1645,7 @@ async function handleChoiceClick(message: AgentChatMessage, choice: AgentChoiceC
     persistState()
 
     await streamAgentMessage(agentMessage, [], [], [], [], {
+      echoUser: false,
       displayText: choiceSelection.selected_label || choiceSelection.selected_description,
       choiceSelection,
     })
@@ -2159,7 +2164,7 @@ onScopeDispose(() => {
             class="agent-assistant-textarea"
             rows="1"
             :disabled="sending || recording"
-            :placeholder="t('agentAssistant.placeholder')"
+            :placeholder="inputPlaceholder"
             @input="handleInputChange"
             @keydown="handleInputKeydown"
           />
diff --git a/src/locales/en-US.ts b/src/locales/en-US.ts
index bf564d21..b102d6b7 100644
--- a/src/locales/en-US.ts
+++ b/src/locales/en-US.ts
@@ -723,6 +723,7 @@ export default {
     emptyTitle: 'What should we handle today?',
     emptySubtitle: 'Ask about sites, subscriptions, downloads, or organization tasks.',
     placeholder: 'Ask MoviePilot, Type / for commands',
+    processingPlaceholder: 'MoviePilot is working, please wait...',
     commandLoading: 'Loading commands...',
     commandLoadFailed: 'Failed to load commands',
     stop: 'Stop generating',
diff --git a/src/locales/zh-CN.ts b/src/locales/zh-CN.ts
index 5bdba4bb..bc709a34 100644
--- a/src/locales/zh-CN.ts
+++ b/src/locales/zh-CN.ts
@@ -719,6 +719,7 @@ export default {
     emptyTitle: '今天想处理什么？',
     emptySubtitle: '站点、订阅、下载、整理任务，都可以直接问我。',
     placeholder: '询问 MoviePilot，输入 / 使用命令',
+    processingPlaceholder: '智能体正在处理，请稍候...',
     commandLoading: '正在加载命令...',
     commandLoadFailed: '命令列表加载失败',
     stop: '停止生成',
diff --git a/src/locales/zh-TW.ts b/src/locales/zh-TW.ts
index 7f5b5f36..f883113e 100644
--- a/src/locales/zh-TW.ts
+++ b/src/locales/zh-TW.ts
@@ -719,6 +719,7 @@ export default {
     emptyTitle: '今天想處理什麼？',
     emptySubtitle: '站點、訂閱、下載、整理任務，都可以直接問我。',
     placeholder: '詢問 MoviePilot，輸入 / 使用命令',
+    processingPlaceholder: '智能體正在處理，請稍候...',
     commandLoading: '正在載入命令...',
     commandLoadFailed: '命令列表載入失敗',
     stop: '停止生成',