feat(ai-chat): 集成DeepChat组件重构聊天界面

- 将自定义消息列表和输入区域替换为DeepChat组件
- 新增ChatGPT组件支持历史记录传递和自定义请求处理
- 重构消息处理逻辑，简化SSE连接管理
- 改进项目选择和会话管理流程

src/views/chatai/components/ChatGPT.vue

@@ -1,25 +1,60 @@
 <script setup lang="ts">
 import "deep-chat";
-import { ref, onMounted } from "vue";
+import { ref, onMounted, watch } from "vue";
 
-const chatRef = ref();
+type HistoryItem = { text: string; role: "user" | "ai" };
+
+const props = withDefaults(
+  defineProps<{
+    history?: HistoryItem[];
+    onRequest?: (messageText: string) => Promise<string> | string;
+  }>(),
+  {
+    history: () => []
+  }
+);
+
+const chatRef = ref<any>();
+
+function normalizeUserText(rawMessage: any): string {
+  if (typeof rawMessage === "string") return rawMessage;
+  if (rawMessage?.text) return String(rawMessage.text);
+  return "";
+}
+
+function applyHistory() {
+  if (!chatRef.value) return;
+  chatRef.value.history = props.history || [];
+}
 
 onMounted(() => {
+  applyHistory();
   chatRef.value.demo = {
-    response: message => {
-      console.log(message);
+    response: async (rawMessage: any) => {
+      const messageText = normalizeUserText(rawMessage);
+      if (props.onRequest) {
+        const replyText = await props.onRequest(messageText);
+        return { text: replyText };
+      }
       return {
         text: "仅演示，如需AI服务，请参考 https://deepchat.dev/docs/connect"
       };
     }
   };
 });
+
+watch(
+  () => props.history,
+  () => {
+    applyHistory();
+  }
+);
 </script>
 
 <template>
   <deep-chat
     ref="chatRef"
-    style="border-radius: 10px"
+    style=" width: 100%; height: 100%;border-radius: 10px"
     :messageStyles="{
       default: {
         shared: {
@@ -101,13 +136,7 @@ onMounted(() => {
       }
     }"
     :textInput="{ placeholder: { text: '发送消息' } }"
-    :history="[
-      { text: '李白是谁？', role: 'user' },
-      {
-        text: '李白（701年2月28日－762年），号青莲居士，又号“谪仙人”，是唐代著名的浪漫主义诗人，被后人誉为“诗仙”。',
-        role: 'ai'
-      }
-    ]"
+    :history="props.history"
     :demo="true"
     :connect="{ stream: true }"
   />