fix(build): 修复 v0.5.0-beta 前端编译错误

跑 npm run build 验收时发现 2 个前端项目编译失败(vue-tsc 报错),修复 4 处:

frontend-h5:
- src/components/chat/InputBox.vue:185 多余右括号
  computed(() => inputText.value.length))  ->  computed(() => inputText.value.length)
- src/components/chat/MessageList.vue:134 pollMessages 调用签名错
  pollMessages(convId, afterMessageId)   ->  pollMessages(afterMessageId)
  (api/message.ts:71 签名只接 1 个 afterMessageId 参数,endpoint 走 current 不需要 convId)

frontend-agent:
- src/components/chat/InputBox.vue 4 处错
  L91/234/292 conversationStore.loading 不存在(store 暴露的是 loadingMessages)
                     -> conversationStore.loadingMessages
  L136 import onUnmounted 死引用,移除

components.d.ts: 触发 unplugin-vue-components 重新生成 6 行(新组件类型)

验证:
- frontend-h5: vue-tsc 0 错,417 modules transformed, dist/ 生成
- frontend-agent: vue-tsc 0 错,1750 modules transformed, dist/ 生成

不影响业务逻辑,纯 build fix。

frontend-h5/components.d.ts

@@ -8,12 +8,16 @@ export {}
 declare module 'vue' {
   export interface GlobalComponents {
     AiHelperPanel: typeof import('./src/components/assistant/AiHelperPanel.vue')['default']
+    ApprovalCardModal: typeof import('./src/components/chat/ApprovalCardModal.vue')['default']
     ApprovalLinks: typeof import('./src/components/assistant/ApprovalLinks.vue')['default']
     CallAgentModal: typeof import('./src/components/chat/CallAgentModal.vue')['default']
     ChatPanel: typeof import('./src/components/chat/ChatPanel.vue')['default']
     ComingSoon: typeof import('./src/components/assistant/ComingSoon.vue')['default']
     InputBar: typeof import('./src/components/chat/InputBar.vue')['default']
+    InputBox: typeof import('./src/components/chat/InputBox.vue')['default']
     MessageBubble: typeof import('./src/components/chat/MessageBubble.vue')['default']
+    MessageItem: typeof import('./src/components/chat/MessageItem.vue')['default']
+    MessageList: typeof import('./src/components/chat/MessageList.vue')['default']
     ParticipantList: typeof import('./src/components/chat/ParticipantList.vue')['default']
     RightPanel: typeof import('./src/components/assistant/RightPanel.vue')['default']
     RouterLink: typeof import('vue-router')['RouterLink']
@@ -27,5 +31,7 @@ declare module 'vue' {
     VanConfigProvider: typeof import('vant/es')['ConfigProvider']
     VanEmpty: typeof import('vant/es')['Empty']
     VanField: typeof import('vant/es')['Field']
+    VanIcon: typeof import('vant/es')['Icon']
+    VanPopup: typeof import('vant/es')['Popup']
   }
 }

frontend-h5/src/components/chat/InputBox.vue

@@ -182,7 +182,7 @@ const showScreenshotEditor = ref(false)
 let screenshotCanvas: HTMLCanvasElement | null = null
 
 /** 当前字符数 */
-const charCount = computed(() => inputText.value.length))
+const charCount = computed(() => inputText.value.length)
 
 /** 是否可以发送消息 */
 const canSend = computed(() => {

frontend-h5/src/components/chat/MessageList.vue

@@ -131,7 +131,7 @@ async function fetchNewMessages(): Promise<void> {
     const lastMsg = messages.value[messages.value.length - 1]
     const afterMessageId = lastMsg?.message_id
 
-    const newMessages = await pollMessages(convId, afterMessageId)
+    const newMessages = await pollMessages(afterMessageId)
 
     if (newMessages && newMessages.length > 0) {
       // 添加新消息到列表