feat: fix MBE health check and add model selection dropdown

- Fixed testMbe() to always use /health instead of /v1/health
- Added model selection dropdown for MarkBaseEngine
- Modified startService('mbe') to pass model and port parameters
- Added loadMbeModels() to fetch available models on mount
- Added getApiBase import

src/views/AdminView.vue

@@ -497,6 +497,11 @@
               <input class="settings-input" v-model="mbeUrl" placeholder="http://localhost:8080" />
               <button class="settings-test-btn" @click="testMbe" :disabled="testingMbe">{{ testingMbe ? 'Testing...' : 'Test' }}</button>
             </div>
+            <div class="service-row" style="margin-top: 8px;">
+              <select v-model="mbeSelectedModel" class="settings-input" :disabled="mbeActionLoading || mbeModels.length === 0">
+                <option v-for="m in mbeModels" :key="m.dir" :value="m.dir">{{ m.name }}</option>
+              </select>
+            </div>
             <div class="service-actions">
               <button class="service-stop-btn" @click="stopService('mbe')" :disabled="mbeActionLoading">Stop</button>
               <button class="service-start-btn" @click="startService('mbe')" :disabled="mbeActionLoading">Start</button>
@@ -560,6 +565,7 @@
 import { ref, onMounted, onUnmounted, watch, computed } from 'vue'
 import { apiCall } from '../api'
 import { loadSystemStats, systemStatsCache, SystemStats } from '../store'
+import { getApiBase } from '@/api/config'
 
 const activeTab = ref('dashboard')
 const stats = ref({ cpu: 0, memory: 0, disk: 0 })
@@ -686,6 +692,10 @@ const markbaseUrl = ref('http://localhost:11438')
 const mbeUrl = ref('http://localhost:8080')
 const proxyUrl = ref('http://localhost:8888')
 const workerUrl = ref('http://localhost:11438')
+
+// MBE Models
+const mbeModels = ref<Array<{id: string, dir: string, name: string}>>([])
+const mbeSelectedModel = ref('E4B-MarkBase')
 const coreStatus = ref('unknown')
 const mbStatus = ref('unknown')
 const mbeStatus = ref('unknown')
@@ -742,7 +752,12 @@ async function startService(name: string) {
   s.loading.value = true
   s.result.value = ''
   try {
-    const result = await apiCall('start_service', { name })
+    const args: any = { name }
+    if (name === 'mbe') {
+      args.model = mbeSelectedModel.value
+      args.port = 8080
+    }
+    const result = await apiCall('start_service', args)
     const started = typeof result === 'string' ? result === 'started' : result?.result === 'started'
     s.result.value = started ? (name === 'mbe' ? 'Loading model...' : 'Service started') : JSON.stringify(result)
     s.ok.value = started
@@ -864,8 +879,9 @@ async function testMbe() {
   testingMbe.value = true
   mbeInfo.value = null
   try {
-    const isLocalhost = window.location.hostname === 'localhost' || window.location.hostname === '127.0.0.1'
-    const healthUrl = isLocalhost ? `${mbeUrl.value}/health` : `${mbeUrl.value}/v1/health`
+    // MarkBaseServer only exposes /health (returns plain text "OK")
+    // Always use /health regardless of hostname
+    const healthUrl = `${mbeUrl.value.replace(/\/$/, '')}/health`
     const resp = await fetch(healthUrl, { signal: AbortSignal.timeout(5000) })
     if (!resp.ok) throw new Error(`HTTP ${resp.status}`)
     
@@ -884,7 +900,7 @@ async function testMbe() {
     } else {
       // 纯文本格式响应
       const text = await resp.text()
-      isHealthy = text === 'OK' || text.includes('"status":"ok"')
+      isHealthy = text.trim() === 'OK' || text.includes('"status":"ok"')
       mbeInfo.value = { version: 'MarkBaseEngine', uptime: 0 }
     }
     
@@ -1193,8 +1209,26 @@ async function saveConfig() {
   }
 }
 
+async function loadMbeModels() {
+  try {
+    const base = getApiBase()
+    const res = await fetch(`${base}/api/v2/mbe/models`, { signal: AbortSignal.timeout(5000) })
+    if (res.ok) {
+      const data = await res.json()
+      if (data.models && data.models.length > 0) {
+        mbeModels.value = data.models
+        mbeSelectedModel.value = data.default || data.models[0].dir
+      }
+    }
+  } catch (e) {
+    // Silently fail - models list is optional
+    console.error('Failed to load MBE models:', e)
+  }
+}
+
 onMounted(async () => { 
   loadServiceUrls()
+  await loadMbeModels()
   await Promise.all([loadDashboard(), loadUsers(), loadShares(), loadSettings()])
   await Promise.all([testCoreApi(), testMarkbase(), testMbe(), testProxy(), testWorker()])
 })