完善 ChatView 页面功能与用户交互逻辑

- 增加请求状态管理，区分 RUNNING 和 DONE 状态
- 优化消息列表归一化处理逻辑，提高代码可读性
- 添加按键事件支持 (Ctrl+Enter) 以改善发送消息体验
- 更新输入框与发送按钮的禁用逻辑，明确状态反馈
- 提升 SSE 连接恢复的安全性，增加鉴权检查
- 优化界面显示，新增快捷键提示及样式改进
- 移除 package-lock.json 中多余的 peer 标记

tests/login.spec.js

@@ -0,0 +1,62 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { mount, flushPromises } from '@vue/test-utils'
+import { createRouter, createMemoryHistory } from 'vue-router'
+import ElementPlus from 'element-plus'
+import LoginView from '../src/views/LoginView.vue'
+import axios from 'axios'
+
+vi.mock('axios', () => ({
+  default: {
+    post: vi.fn(),
+  },
+}))
+
+const mockedAxios = axios
+
+const makeRouter = () =>
+  createRouter({
+    history: createMemoryHistory(),
+    routes: [
+      { path: '/', name: 'login', component: LoginView },
+      { path: '/welcome', name: 'welcome', component: LoginView },
+    ],
+  })
+
+describe('LoginView enter submit', () => {
+  beforeEach(() => {
+    localStorage.clear()
+    vi.clearAllMocks()
+  })
+
+  it('submits login on form submit', async () => {
+    mockedAxios.post.mockResolvedValue({
+      data: { token: 'token-123', user: { id: 'u1' } },
+    })
+
+    const router = makeRouter()
+    router.push('/')
+    await router.isReady()
+
+    const wrapper = mount(LoginView, {
+      global: {
+        plugins: [router, ElementPlus],
+      },
+    })
+
+    const emailInput = wrapper.find('input[autocomplete="email"]')
+    const passwordInput = wrapper.find(
+      'input[autocomplete="current-password"]'
+    )
+    await emailInput.setValue('user@example.com')
+    await passwordInput.setValue('password')
+
+    await wrapper.find('form').trigger('submit')
+    await flushPromises()
+
+    expect(mockedAxios.post).toHaveBeenCalledWith(
+      'http://localhost:8000/api/login',
+      { email: 'user@example.com', password: 'password' }
+    )
+    expect(router.currentRoute.value.name).toBe('welcome')
+  })
+})