Replace Kuma iframe with live service health status tab

Uptime tab now polls /deploy/health-status (parallel HTTP checks) and
shows a status grid with response times. Removes broken Kuma sub-path
nginx locations. Auto-refreshes every 30s.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/pages/AdminMonitor.tsx

@@ -12,6 +12,12 @@ interface AppStatus {
   checkedAt: string
 }
 
+interface HealthStatus {
+  name: string
+  up: boolean
+  ms: number | null
+}
+
 interface DeployEntry {
   repo: string
   host: string
@@ -23,9 +29,10 @@ interface DeployEntry {
 }
 
 export function AdminMonitor({ user }: { user: User }) {
-  const [tab, setTab] = useState<'updates' | 'kuma' | 'deploys'>('updates')
+  const [tab, setTab] = useState<'updates' | 'uptime' | 'deploys'>('updates')
   const [statuses, setStatuses] = useState<AppStatus[]>([])
   const [deploys, setDeploys] = useState<DeployEntry[]>([])
+  const [health, setHealth] = useState<HealthStatus[]>([])
   const [loading, setLoading] = useState(false)
   const [deploying, setDeploying] = useState<Set<string>>(new Set())
 
@@ -39,6 +46,16 @@ export function AdminMonitor({ user }: { user: User }) {
     }
   }
 
+  async function fetchHealth() {
+    setLoading(true)
+    try {
+      const res = await fetch('/deploy/health-status', { credentials: 'include' })
+      if (res.ok) setHealth(await res.json())
+    } finally {
+      setLoading(false)
+    }
+  }
+
   async function fetchDeploys() {
     setLoading(true)
     try {
@@ -65,6 +82,11 @@ export function AdminMonitor({ user }: { user: User }) {
   useEffect(() => {
     if (tab === 'updates') fetchStatus()
     if (tab === 'deploys') fetchDeploys()
+    if (tab === 'uptime') {
+      fetchHealth()
+      const id = setInterval(fetchHealth, 30_000)
+      return () => clearInterval(id)
+    }
   }, [tab])
 
   const updatesAvailable = statuses.filter(s => s.updateAvailable).length
@@ -77,7 +99,7 @@ export function AdminMonitor({ user }: { user: User }) {
           display: 'flex', borderBottom: '1px solid var(--surface-2)',
           background: 'var(--navy)', flexShrink: 0,
         }}>
-          {(['updates', 'kuma', 'deploys'] as const).map(t => (
+          {(['updates', 'uptime', 'deploys'] as const).map(t => (
             <button key={t} onClick={() => setTab(t)} style={{
               background: tab === t ? 'var(--surface)' : 'transparent',
               border: 'none', borderBottom: tab === t ? '2px solid var(--gold)' : '2px solid transparent',
@@ -95,7 +117,7 @@ export function AdminMonitor({ user }: { user: User }) {
                   display: 'flex', alignItems: 'center', justifyContent: 'center',
                 }}>{updatesAvailable}</span>
               )}
-              {t === 'kuma' && '📡 Uptime'}
+              {t === 'uptime' && '📡 Uptime'}
               {t === 'deploys' && '📋 Deploy Log'}
             </button>
           ))}
@@ -168,8 +190,46 @@ export function AdminMonitor({ user }: { user: User }) {
           </div>
         )}
 
-        {tab === 'kuma' && (
-          <iframe src="/monitor/" title="Uptime Kuma" style={{ flex: 1, border: 'none', width: '100%' }} />
+        {tab === 'uptime' && (
+          <div style={{ flex: 1, overflowY: 'auto', padding: '1.5rem 2rem' }}>
+            <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '1rem' }}>
+              <h2 style={{ fontSize: '1rem', fontWeight: 600 }}>Service Health</h2>
+              <button onClick={fetchHealth} disabled={loading} style={{
+                background: 'var(--surface-2)', border: 'none', borderRadius: '6px',
+                color: 'var(--text-muted)', padding: '0.4rem 1rem', fontSize: '0.8rem', cursor: 'pointer',
+              }}>
+                {loading ? 'Checking…' : 'Refresh'}
+              </button>
+            </div>
+            {health.length === 0 && !loading && (
+              <p style={{ color: 'var(--text-muted)' }}>Checking services…</p>
+            )}
+            <div style={{ display: 'flex', flexDirection: 'column', gap: '0.5rem' }}>
+              {health.map(h => (
+                <div key={h.name} style={{
+                  background: 'var(--surface)', border: '1px solid var(--surface-2)',
+                  borderLeft: `3px solid ${h.up ? '#2d6a4f' : 'var(--danger, #ff4d4d)'}`,
+                  borderRadius: '8px', padding: '0.75rem 1rem',
+                  display: 'flex', alignItems: 'center', justifyContent: 'space-between',
+                }}>
+                  <div style={{ display: 'flex', alignItems: 'center', gap: '0.6rem' }}>
+                    <span style={{
+                      width: '8px', height: '8px', borderRadius: '50%', flexShrink: 0,
+                      background: h.up ? '#52b788' : 'var(--danger, #ff4d4d)',
+                      boxShadow: h.up ? '0 0 6px #52b78866' : undefined,
+                    }} />
+                    <span style={{ fontWeight: 600, fontSize: '0.9rem' }}>{h.name}</span>
+                  </div>
+                  <span style={{
+                    fontSize: '0.75rem', fontFamily: 'monospace',
+                    color: h.up ? '#52b788' : 'var(--text-muted)',
+                  }}>
+                    {h.up ? `${h.ms}ms` : 'unreachable'}
+                  </span>
+                </div>
+              ))}
+            </div>
+          </div>
         )}
 
         {tab === 'deploys' && (