feat: 添加会话迁移功能并优化登录流程

app/pages/auth/login.vue

@@ -60,6 +60,11 @@ async function handleLogin() {
         })
         $toast.success('登录成功！')
         await refresh(true)
+        try {
+            await $fetch('/api/agent/migrate', { method: 'POST' })
+        } catch (e) {
+            console.error('迁移临时会话失败', e)
+        }
         await navigateTo(redirect.value)
     } catch (e: any) {
         $toast.error(e?.data?.statusMessage || e?.message || '登录失败')
@@ -69,12 +74,17 @@ async function handleLogin() {
     }
 }
 
-onMounted(() => {
+onMounted(async () => {
     fetchCaptcha()
 
     const url = new URL(window.location.href)
     if (url.searchParams.get('oauth_success') === '1') {
-        refresh(true)
+        await refresh(true)
+        try {
+            await $fetch('/api/agent/migrate', { method: 'POST' })
+        } catch (e) {
+            console.error('迁移临时会话失败', e)
+        }
         router.push('/')
     }
     if (url.searchParams.get('oauth_error')) {