feat: terminal SPA layout, route sync, and WebSocket URL helper

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/changelog/2026-06-01-terminal-spa-iteration.md

@@ -0,0 +1,36 @@
+# Changelog — 终端页 SPA 迭代
+
+**日期**: 2026-06-01
+
+## 摘要
+
+迭代 `#/terminal`：全屏布局、路由 `server_id`/`path` 联动、统一 WebSocket URL、连接状态与空状态 UX；文件管理页增加「终端」入口。
+
+## 动机
+
+用户要求对 `app/#/terminal` 继续迭代；生产页存在终端区域高度不足、从服务器二次进入不建会话、连接态不清晰等问题。
+
+## 涉及文件
+
+- `frontend/src/App.vue` — `nexus-terminal-main` 布局
+- `frontend/src/pages/TerminalPage.vue` — 核心迭代
+- `frontend/src/utils/wsUrl.ts`（新）
+- `frontend/src/pages/FilesPage.vue` — 带当前路径打开终端
+- `docs/design/specs/2026-06-01-terminal-spa-iteration-design.md`（新）
+
+## 验证
+
+1. `cd frontend && npm run type-check`
+2. 打开 `#/terminal?server_id=8` → 终端区占满、状态「已连接」、可输入
+3. 已在终端时从服务器点「终端」→ 切换对应标签
+4. 文件管理选服务器+路径 →「终端」→ 自动 `cd` 到当前目录
+5. `npm run test:e2e` 中 terminal 用例
+
+## 迁移 / 重启
+
+- 仅前端：需 `vite build` + 上传 `web/app/`
+- 后端无变更
+
+## 回滚
+
+还原上述前端文件并重新构建部署。

docs/design/specs/2026-06-01-terminal-spa-iteration-design.md

@@ -0,0 +1,34 @@
+# 终端页 SPA 迭代设计
+
+**日期**: 2026-06-01  
+**路由**: `/app/#/terminal`（`?server_id=&path=`）
+
+## 背景
+
+Vue `TerminalPage` 已具备多标签 WebSSH、重连、快捷命令等能力，但存在：
+
+1. `v-main` 未限定高度，终端区域在部分视口下高度为 0 或过小  
+2. 从服务器页带 `server_id` 跳转时，若已在终端路由则不会新建/切换会话（无 `watch`）  
+3. WebSocket URL 与 `useWebSocket` 构建方式不一致，`VITE_API_BASE=/api` 时 dev 可能异常  
+4. 无「连接中」态，失败时仅禁用发送按钮  
+5. `path` 查询参数仅全局生效，多标签会重复 cd  
+6. Ctrl+L 向 shell 发送 `clear\r` 非标准清屏
+
+## 方案
+
+| 项 | 做法 |
+|----|------|
+| 布局 | `App.vue` 对 `/terminal` 路由给 `v-main` 增加 `nexus-terminal-main`（`100dvh - app-bar` + flex） |
+| WS URL | 新增 `utils/wsUrl.ts`，与告警 WS 同源规则 |
+| 路由 | `watch(route.query)`：`server_id` / `path` / `new_tab` |
+| 会话 | `TermSession.pendingPath`、`status`（connecting/connected/error） |
+| 空状态 | 无会话时内嵌服务器列表 +「选择服务器」 |
+| 清屏 | Ctrl+L 仅 `term.clear()` + 可选 `\x0c` |
+
+## 验收
+
+- `#/terminal?server_id=8` 首屏终端区域占满内容区且可输入  
+- 已在 `#/terminal` 时从服务器点「终端」能切换/新建会话  
+- `#/terminal?server_id=8&path=/var/log` 首包后自动 cd  
+- 断线显示重连 overlay；手动断开不自动重连  
+- 生产 `wss://host/ws/terminal/{id}?token=…` 可连

frontend/src/App.vue

@@ -219,7 +219,7 @@
     </v-navigation-drawer>
 
     <!-- ── Main Content ── -->
-    <v-main>
+    <v-main :class="{ 'nexus-terminal-main': route.path === '/terminal' }">
       <router-view />
     </v-main>
 
@@ -378,3 +378,20 @@ interface SearchResults {
   query: string
 }
 </script>
+
+<style>
+/* 终端页占满主内容区，避免 xterm 高度为 0 */
+.v-application .v-main.nexus-terminal-main {
+  display: flex;
+  flex-direction: column;
+  height: calc(100dvh - 64px);
+  min-height: 0;
+  overflow: hidden;
+  padding: 0;
+}
+.v-application .v-main.nexus-terminal-main > .v-container {
+  flex: 1 1 auto;
+  min-height: 0;
+  max-width: 100%;
+}
+</style>

frontend/src/pages/FilesPage.vue

@@ -32,6 +32,15 @@
           <v-btn size="small" variant="tonal" prepend-icon="mdi-upload" @click="showUpload = true">上传</v-btn>
           <v-btn size="small" variant="tonal" prepend-icon="mdi-folder-plus" @click="showMkdir = true">新建目录</v-btn>
           <v-btn size="small" variant="tonal" prepend-icon="mdi-refresh" @click="browse">刷新</v-btn>
+          <v-btn
+            size="small"
+            variant="tonal"
+            prepend-icon="mdi-console"
+            :disabled="!selectedServer"
+            @click="openInTerminal"
+          >
+            终端
+          </v-btn>
         </v-col>
       </v-row>
     </v-card>
@@ -209,7 +218,7 @@
 
 <script setup lang="ts">
 import { ref, computed, onMounted, defineAsyncComponent } from 'vue'
-import { useRoute } from 'vue-router'
+import { useRoute, useRouter } from 'vue-router'
 import { http } from '@/api'
 import { useServerList } from '@/composables/useServerList'
 import { useSnackbar } from '@/composables/useSnackbar'
@@ -226,6 +235,7 @@ const snackbar = useSnackbar()
 const { servers: serverList, loadServers } = useServerList()
 
 const route = useRoute()
+const router = useRouter()
 
 // ── State ──
 const selectedServer = ref<number | null>(null)
@@ -291,6 +301,17 @@ const breadcrumbs = computed(() => {
 })
 
 // ── Data loading ──
+function openInTerminal() {
+  if (!selectedServer.value) return
+  router.push({
+    path: '/terminal',
+    query: {
+      server_id: String(selectedServer.value),
+      path: currentPath.value || '/',
+    },
+  })
+}
+
 async function browse() {
   if (!selectedServer.value) return
   loading.value = true

frontend/src/pages/TerminalPage.vue

@@ -1,5 +1,5 @@
 <template>
-  <v-container fluid class="pa-0 d-flex flex-column" style="background: #0b1120; height: 100%">
+  <v-container fluid class="pa-0 d-flex flex-column terminal-root">
     <!-- ── Server Sidebar ── -->
     <v-navigation-drawer v-model="showServerSidebar" width="250" location="start" temporary>
       <v-list-subheader>服务器列表</v-list-subheader>
@@ -69,7 +69,7 @@
             @click="switchTab(tab.id)"
           >
             <template #prepend>
-              <v-icon start size="8" :color="tab.ws ? 'success' : 'grey'">mdi-circle</v-icon>
+              <v-icon start size="8" :color="tab.status === 'connected' ? 'success' : tab.status === 'connecting' ? 'warning' : 'grey'">mdi-circle</v-icon>
             </template>
             <span class="text-truncate" style="max-width: 100px">{{ tab.serverName }}</span>
             <v-icon end size="12" class="ml-1" @click.stop="closeTab(tab.id)">mdi-close</v-icon>
@@ -87,7 +87,7 @@
           <span v-if="activeSession?.cwd" class="text-caption text-medium-emphasis font-mono" style="max-width: 200px">{{ activeSession.cwd }}</span>
           <v-chip
             v-if="activeSession"
-            :color="activeSession.ws ? 'success' : 'grey'"
+            :color="sessionStatusColor(activeSession)"
             variant="tonal"
             size="x-small"
             label
@@ -95,7 +95,7 @@
             <template #prepend>
               <v-icon start size="8">mdi-circle</v-icon>
             </template>
-            {{ activeSession.ws ? '已连接' : '未连接' }}
+            {{ sessionStatusLabel(activeSession) }}
           </v-chip>
           <span v-if="activeSession?.uptime" class="text-caption text-medium-emphasis">{{ activeSession.uptime }}</span>
           <span v-if="activeSession?.pingMs !== null && activeSession?.pingMs !== undefined" class="text-caption text-medium-emphasis">{{ activeSession.pingMs }}ms</span>
@@ -137,6 +137,19 @@
           }"
         />
 
+        <!-- Empty: no sessions -->
+        <div
+          v-if="sessions.length === 0 && !showDisconnectOverlay"
+          class="d-flex flex-column align-center justify-center fill-height pa-8 text-center"
+        >
+          <v-icon size="56" color="primary" class="mb-4">mdi-console-network</v-icon>
+          <div class="text-h6 mb-2">WebSSH 终端</div>
+          <div class="text-body-2 text-medium-emphasis mb-6">选择一台服务器开始会话，或从服务器列表点击「终端」进入</div>
+          <v-btn color="primary" variant="flat" prepend-icon="mdi-server" @click="showServerDialog = true">
+            选择服务器
+          </v-btn>
+        </div>
+
         <!-- Disconnect overlay -->
         <v-overlay
           :model-value="showDisconnectOverlay"
@@ -262,6 +275,7 @@ import { FitAddon } from '@xterm/addon-fit'
 import { WebLinksAddon } from '@xterm/addon-web-links'
 import '@xterm/xterm/css/xterm.css'
 import { useSnackbar } from '@/composables/useSnackbar'
+import { buildWebSocketUrl } from '@/utils/wsUrl'
 
 const route = useRoute()
 const router = useRouter()
@@ -269,12 +283,12 @@ const theme = useTheme()
 const auth = useAuthStore()
 const snackbar = useSnackbar()
 
-// ── Props from route ──
-const initialServerId = computed(() => Number(route.query.server_id) || 0)
-const initialPath = computed(() => {
-  const p = (route.query.path as string) || ''
-  return p && /^[^\x00-\x1f\x7f"']+$/.test(p) ? p : ''
-})
+type SessionStatus = 'idle' | 'connecting' | 'connected' | 'error'
+
+function sanitizeRemotePath(raw: string): string {
+  const p = (raw || '').trim()
+  return p && /^[^\x00-\x1f\x7f"'`\\]+$/.test(p) ? p : ''
+}
 
 // ── localStorage keys ──
 const K_FONT = 'nexus_term_fontSize'
@@ -301,7 +315,9 @@ interface TermSession {
   uptime: string
   pingMs: number | null
   initialCdSent: boolean
+  pendingPath: string
   manualDisconnect: boolean
+  status: SessionStatus
 }
 
 const sessions = ref<TermSession[]>([])
@@ -358,6 +374,52 @@ const filteredServers = computed(() => {
   return servers.value.filter(s => !q || s.name.toLowerCase().includes(q) || s.domain.toLowerCase().includes(q))
 })
 
+function sessionStatusLabel(s: TermSession): string {
+  switch (s.status) {
+    case 'connecting': return '连接中…'
+    case 'connected': return '已连接'
+    case 'error': return '连接失败'
+    default: return '未连接'
+  }
+}
+
+function sessionStatusColor(s: TermSession): string {
+  switch (s.status) {
+    case 'connecting': return 'warning'
+    case 'connected': return 'success'
+    case 'error': return 'error'
+    default: return 'grey'
+  }
+}
+
+function sendCdToSession(s: TermSession, path: string) {
+  const dir = sanitizeRemotePath(path)
+  if (!dir || !s.ws || s.ws.readyState !== WebSocket.OPEN) return
+  s.ws.send(JSON.stringify({ type: 'DATA', data: `cd ${dir}\r` }))
+  s.initialCdSent = true
+}
+
+async function applyRouteQuery() {
+  const id = Number(route.query.server_id) || 0
+  const path = sanitizeRemotePath(String(route.query.path || ''))
+  const forceNew = route.query.new_tab === '1' || route.query.new_tab === 'true'
+
+  if (!id) {
+    if (sessions.value.length === 0) showServerDialog.value = true
+    return
+  }
+
+  if (!forceNew) {
+    const existing = sessions.value.find(s => s.serverId === id)
+    if (existing) {
+      await switchTab(existing.id)
+      if (path) sendCdToSession(existing, path)
+      return
+    }
+  }
+  await newSession(id, { path })
+}
+
 // ── Shell syntax highlighter ──
 const SHELL_KEYWORDS = new Set([
   'sudo', 'cd', 'ls', 'grep', 'find', 'cat', 'chmod', 'chown', 'systemctl',
@@ -500,7 +562,7 @@ async function closeTab(sessionId: string) {
   await switchTab(sessions.value[newIdx].id)
 }
 
-async function newSession(serverId?: number) {
+async function newSession(serverId?: number, opts?: { path?: string }) {
   if (sessions.value.length >= 10) {
     snackbar('最多10个标签', 'warning')
     return
@@ -542,9 +604,12 @@ async function newSession(serverId?: number) {
     uptime: '',
     pingMs: null,
     initialCdSent: false,
+    pendingPath: sanitizeRemotePath(opts?.path || ''),
     manualDisconnect: false,
+    status: 'idle',
   }
   sessions.value.push(session)
+  showDisconnectOverlay.value = false
 
   await switchTab(sid)
   await nextTick()
@@ -602,6 +667,13 @@ async function connectSession(sessionId: string) {
   const s = sessions.value.find(t => t.id === sessionId)
   if (!s) return
 
+  if (s.ws) {
+    try { s.ws.close(1000) } catch { /* ignore */ }
+    s.ws = null
+  }
+
+  s.status = 'connecting'
+
   // 1. Get WebSSH token
   let websshToken: string
   try {
@@ -611,19 +683,24 @@ async function connectSession(sessionId: string) {
     websshToken = res.webssh_token
   } catch (e: any) {
     const msg = e?.message || '无法获取终端令牌'
+    s.status = 'error'
     s.term?.writeln(`\r\n\x1b[31m⚠ ${msg}\x1b[0m`)
+    if (sessionId === activeSessionId.value) {
+      showDisconnectOverlay.value = true
+      disconnectMsg.value = msg
+    }
     return
   }
 
   // 2. Open WebSocket
-  const apiBase = import.meta.env.VITE_API_BASE || `${location.protocol}//${location.host}`
-  const apiUrl = new URL(apiBase)
-  const wsProto = apiUrl.protocol === 'https:' ? 'wss:' : 'ws:'
-  const wsUrl = `${wsProto}//${apiUrl.host}/ws/terminal/${s.serverId}?token=${encodeURIComponent(websshToken)}`
+  const wsUrl = buildWebSocketUrl(`/ws/terminal/${s.serverId}`, {
+    token: websshToken,
+  })
   const ws = new WebSocket(wsUrl)
   s.ws = ws
 
   ws.onopen = () => {
+    s.status = 'connected'
     s.manualDisconnect = false
     s.reconnectAttempt = 0
     if (s.reconnectTimer) { clearTimeout(s.reconnectTimer); s.reconnectTimer = null }
@@ -646,12 +723,8 @@ async function connectSession(sessionId: string) {
           if (dims && ws.readyState === WebSocket.OPEN) {
             ws.send(JSON.stringify({ type: 'RESIZE', cols: dims.cols, rows: dims.rows }))
           }
-          // Auto-cd to initial path
-          if (initialPath.value && !s.initialCdSent && ws.readyState === WebSocket.OPEN) {
-            s.initialCdSent = true
-            setTimeout(() => {
-              ws.send(JSON.stringify({ type: 'DATA', data: `cd ${initialPath.value}\r` }))
-            }, 200)
+          if (s.pendingPath && !s.initialCdSent && ws.readyState === WebSocket.OPEN) {
+            setTimeout(() => sendCdToSession(s, s.pendingPath), 200)
           }
           break
         case 'DATA':
@@ -681,10 +754,16 @@ async function connectSession(sessionId: string) {
       return
     }
     if (ev.code === 4003) {
+      s.status = 'error'
       s.term?.write(`\r\n\x1b[31m⚠ 授权失败: ${ev.reason || 'SSH凭据未配置'}\x1b[0m\r\n`)
+      if (sessionId === activeSessionId.value) {
+        showDisconnectOverlay.value = true
+        disconnectMsg.value = ev.reason || 'SSH 凭据未配置'
+      }
       return
     }
 
+    s.status = 'error'
     s.ws = null
 
     if (!s.manualDisconnect && ev.code !== 1000 && ev.code !== 4001 && ev.code !== 4003) {
@@ -1031,7 +1110,7 @@ function onKeydown(e: KeyboardEvent) {
     if (s?.term) {
       s.term.clear()
       if (s.ws?.readyState === WebSocket.OPEN) {
-        s.ws.send(JSON.stringify({ type: 'DATA', data: 'clear\r' }))
+        s.ws.send(JSON.stringify({ type: 'DATA', data: '\x0c' }))
       }
     }
     return
@@ -1043,17 +1122,16 @@ function onKeydown(e: KeyboardEvent) {
 }
 
 // ── Lifecycle ──
+watch(
+  () => [route.query.server_id, route.query.path, route.query.new_tab],
+  () => { void applyRouteQuery() },
+)
+
 onMounted(async () => {
   document.addEventListener('keydown', onKeydown)
   await loadServers()
   await loadQuickCmds()
-
-  if (initialServerId.value) {
-    await newSession(initialServerId.value)
-  } else {
-    // No server_id — show server selector
-    showServerDialog.value = true
-  }
+  await applyRouteQuery()
 })
 
 onBeforeUnmount(() => {
@@ -1073,9 +1151,20 @@ onBeforeUnmount(() => {
 </script>
 
 <style scoped>
+.terminal-root {
+  background: #0b1120;
+  flex: 1 1 auto;
+  min-height: 0;
+  height: 100%;
+}
+.fill-height {
+  flex: 1 1 auto;
+  min-height: 200px;
+}
 .cursor-pointer { cursor: pointer; }
 .font-mono { font-family: 'Cascadia Code', 'Fira Code', 'JetBrains Mono', Menlo, monospace; }
 :deep(.xterm) { padding: 4px; height: 100%; }
+:deep(.xterm-viewport) { overflow-y: auto !important; }
 
 /* ── Shell syntax highlight colors ── */
 .sh-keyword { color: #60a5fa; font-weight: 500; }

frontend/src/utils/wsUrl.ts

@@ -0,0 +1,23 @@
+/**
+ * Build WebSocket URLs consistent with HTTP API base (VITE_API_BASE or same-origin).
+ */
+export function buildWebSocketUrl(path: string, query?: Record<string, string>): string {
+  const normalizedPath = path.startsWith('/') ? path : `/${path}`
+  const base = (import.meta.env.VITE_API_BASE as string | undefined) || ''
+
+  let origin: string
+  if (base.startsWith('http://') || base.startsWith('https://')) {
+    origin = base.replace(/^http/, 'ws').replace(/\/api\/?$/, '')
+  } else {
+    const proto = window.location.protocol === 'https:' ? 'wss:' : 'ws:'
+    origin = `${proto}//${window.location.host}`
+  }
+
+  const url = new URL(normalizedPath, `${origin}/`)
+  if (query) {
+    for (const [k, v] of Object.entries(query)) {
+      if (v !== undefined && v !== '') url.searchParams.set(k, v)
+    }
+  }
+  return url.toString()
+}