fix: collapse ping section by default, expand on click

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

src/pages/EquipmentPage.tsx

@@ -632,6 +632,7 @@ function WorkstationCard({
   const [updateMsg, setUpdateMsg]         = useState<string | null>(null)
   const [testResults, setTestResults]     = useState<Record<string, { ok: boolean; msg: string } | null>>({})
   const [testingDeviceId, setTestingDeviceId] = useState<string | null>(null)
+  const [showPing, setShowPing]           = useState(false)
   const [pingHost, setPingHost]           = useState('')
   const [pinging, setPinging]             = useState(false)
   const [pingResult, setPingResult]       = useState<{ ok: boolean; output?: string; error?: string } | null>(null)
@@ -959,7 +960,16 @@ function WorkstationCard({
             {/* Ping tool — only when agent is online */}
             {ws.isOnline && (
               <div className="pt-2 border-t border-slate-100 dark:border-slate-700">
-                <p className="text-xs text-slate-400 dark:text-slate-500 mb-2">Пинг через агента</p>
+                <button
+                  onClick={() => { setShowPing(v => !v); setPingResult(null) }}
+                  className="flex items-center gap-1.5 text-xs text-slate-400 hover:text-slate-600 dark:hover:text-slate-300 transition-colors"
+                >
+                  <Network size={12} />
+                  Пинг через агента
+                  {showPing ? <ChevronDown size={11} /> : <ChevronRight size={11} />}
+                </button>
+                {showPing && (
+                  <div className="mt-2">
                     <div className="flex gap-2">
                       <input
                         value={pingHost}
@@ -967,6 +977,7 @@ function WorkstationCard({
                         onKeyDown={e => e.key === 'Enter' && pingNow()}
                         placeholder="192.168.1.1 или hostname"
                         className="input text-sm font-mono flex-1 py-1.5"
+                        autoFocus
                       />
                       <button
                         onClick={pingNow}
@@ -996,6 +1007,8 @@ function WorkstationCard({
               </div>
             )}
           </div>
+        )}
+      </div>
 
       {showPairModal && (
         <PairCodeModal