fix: Admin Panel health checks work via reverse proxy

- loadServiceUrls: use window.location.origin for remote access, localhost for local dev
- testCoreApi: use /api/v1/health for remote, /health for localhost
- testProxy: health check path works for both
- testMbe: already uses getApiBase() which handles both cases

This fixes the issue where Admin Panel showed offline when accessed via
https://nextorage.momentry.ddns.net because localhost health checks
point to user's machine, not the server.

src/views/AdminView.vue

@@ -799,12 +799,17 @@ function serviceState(name: string) {
 
 function loadServiceUrls() {
   const stored = localStorage.getItem('service_urls')
-  // Always use localhost for services - they run on the same machine
+  // Use current origin for services - works both locally and via reverse proxy
-  const defaultCore = 'http://localhost:3002'
+  const currentOrigin = window.location.origin
-  const defaultMarkbase = 'http://localhost:11438'
+  const isLocalhost = window.location.hostname === 'localhost' || window.location.hostname === '127.0.0.1'
-  const defaultMbe = 'http://localhost:8080'
+  
-  const defaultProxy = 'http://localhost:8888'
+  // Local dev: use direct localhost ports
-  const defaultWorker = 'http://localhost:11438'
+  // Remote access: use current origin (reverse proxy forwards requests)
+  const defaultCore = isLocalhost ? 'http://localhost:3002' : currentOrigin
+  const defaultMarkbase = isLocalhost ? 'http://localhost:11438' : currentOrigin
+  const defaultMbe = isLocalhost ? 'http://localhost:8080' : currentOrigin
+  const defaultProxy = isLocalhost ? 'http://localhost:8888' : currentOrigin
+  const defaultWorker = isLocalhost ? 'http://localhost:11438' : currentOrigin
   
   if (stored) {
     try {
@@ -856,8 +861,10 @@ async function testCoreApi() {
   testingCore.value = true
   coreInfo.value = null
   try {
-    // Core API directly serves /health on localhost
+    const isLocalhost = coreApiUrl.value.includes('localhost') || coreApiUrl.value.includes('127.0.0.1')
-    const healthUrl = `${coreApiUrl.value}/health`
+    // Localhost: direct /health path
+    // Remote: via reverse proxy at /api/v1/health
+    const healthUrl = isLocalhost ? `${coreApiUrl.value}/health` : `${coreApiUrl.value}/api/v1/health`
     const resp = await fetch(healthUrl, { signal: AbortSignal.timeout(5000) })
     if (!resp.ok) throw new Error(`HTTP ${resp.status}`)
     const data = await resp.json()
@@ -935,6 +942,9 @@ async function testMbe() {
 async function testProxy() {
   testingProxy.value = true
   try {
+    const isLocalhost = proxyUrl.value.includes('localhost') || proxyUrl.value.includes('127.0.0.1')
+    // Localhost: direct /health path
+    // Remote: via reverse proxy at /health (same path)
     const healthUrl = `${proxyUrl.value}/health`
     const resp = await fetch(healthUrl, { signal: AbortSignal.timeout(5000) })
     proxyStatus.value = resp.ok ? 'online' : 'offline'