feat: 更新会话处理逻辑，添加新会话处理函数并优化消息加载

app/composables/useAgentChat.ts

@@ -78,7 +78,7 @@ export function useAgentChat(options: UseAgentChatOptions) {
     );
   }
 
-  async function loadMessages(sid: string) {
+  async function loadMessages(sid: string, skipResume = false) {
     messages.value = [];
     errorMessage.value = "";
     try {
@@ -91,7 +91,9 @@ export function useAgentChat(options: UseAgentChatOptions) {
         parts: m.parts ? (typeof m.parts === "string" ? JSON.parse(m.parts) : m.parts) : undefined,
       }));
 
-      await tryResumeStream(sid);
+      if (!skipResume) {
+        await tryResumeStream(sid);
+      }
     } catch {
       messages.value = [];
     }
@@ -119,7 +121,6 @@ export function useAgentChat(options: UseAgentChatOptions) {
     }
 
     if (!res.ok) {
-      await loadMessages(sid);
       return;
     }
 
@@ -128,7 +129,7 @@ export function useAgentChat(options: UseAgentChatOptions) {
       try {
         const body = await res.json();
         if (body?.reason === "already-done" || body?.reason === "no-buffer") {
-          await loadMessages(sid);
+          await loadMessages(sid, true);
         }
       } catch { /* not JSON */ }
       return;

app/pages/index.vue

@@ -179,6 +179,19 @@ async function handleSend(content: string) {
   }
 }
 
+async function handleNewSession() {
+  const sid = sessions.currentSessionId.value;
+  if (sid) {
+    const inst = chat.getInstance(sid);
+    if (inst.messages.value.length === 0 && !inst.isLoading.value) {
+      if (isMobile) mobileSidebarOpen.value = false;
+      return;
+    }
+  }
+  await sessions.newSession();
+  if (isMobile) mobileSidebarOpen.value = false;
+}
+
 function refreshTitleWithRetry(sid: string) {
   const delays = [3000, 6000, 10000, 15000, 22000];
   delays.forEach((delay) => {
@@ -232,7 +245,7 @@ onMounted(async () => {
     :user="auth.user.value"
     :collapsed="isMobile ? !mobileSidebarOpen : sidebarCollapsed"
     :mobile="isMobile"
-    @new-session="sessions.newSession(); if (isMobile) mobileSidebarOpen = false"
+    @new-session="handleNewSession"
     @select="sessions.selectSession($event); if (isMobile) mobileSidebarOpen = false"
     @rename="sessions.renameSession"
     @delete="handleDeleteSession"