fix: hide reconnect button when agent is online; add printer encoding/paper_width settings

- WorkstationCard: show RefreshCw reconnect only when agentId set but offline
- DeviceForm: add encoding (utf8/cp866) and paper_width fields for network printers
- Backend: pass device.config in test_device command to agent

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

backend/src/routes/workstations.ts

@@ -322,6 +322,7 @@ const workstationRoutes: FastifyPluginAsync = async (fastify) => {
             dto_user: device.config?.dto_user,
             dto_pass: device.config?.dto_pass,
             dto_device_id: device.config?.dto_device_id,
+            config: device.config,
           },
         }) as { ok: boolean; error?: string; message?: string }
         return result

src/pages/EquipmentPage.tsx

@@ -237,6 +237,8 @@ function DeviceForm({
   const [availablePrinters, setAvailablePrinters] = useState<{ name: string; isDefault: boolean }[] | null>(null)
   const [printersLoading, setPrintersLoading]     = useState(false)
   const [windowsPrinter, setWindowsPrinter]       = useState(String((initial?.config as any)?.windowsPrinter ?? (initial?.config as any)?.windows_printer ?? ''))
+  const [encoding, setEncoding]                   = useState<'utf8' | 'cp866'>((initial?.config as any)?.encoding ?? 'utf8')
+  const [paperWidth, setPaperWidth]               = useState(String((initial?.config as any)?.paper_width ?? 576))
 
   const loadPorts = () => {
     if (!wsOnline) return
@@ -290,6 +292,10 @@ function DeviceForm({
     if (type === 'printer' && connection === 'windows' && windowsPrinter.trim()) {
       configData.windows_printer = windowsPrinter.trim()
     }
+    if (type === 'printer' && connection === 'network') {
+      configData.encoding    = encoding
+      configData.paper_width = Number(paperWidth) || 576
+    }
 
     await onSave({
       type,
@@ -451,25 +457,52 @@ function DeviceForm({
       )}
 
       {connection === 'network' && (
-        <div className="grid grid-cols-3 gap-3">
-          <div className="col-span-2">
-            <label className="block text-xs font-medium text-slate-500 mb-1">IP адрес / хост</label>
-            <input
-              value={networkHost}
-              onChange={e => setNetworkHost(e.target.value)}
-              className="w-full input text-sm font-mono"
-              placeholder={type === 'netup' ? '172.16.0.12' : '192.168.1.50'}
-            />
-          </div>
-          <div>
-            <label className="block text-xs font-medium text-slate-500 mb-1">Порт</label>
-            <input
-              value={networkPort}
-              onChange={e => setNetworkPort(e.target.value)}
-              className="w-full input text-sm font-mono"
-              placeholder={type === 'netup' ? '8880' : '9100'}
-            />
+        <div className="space-y-3">
+          <div className="grid grid-cols-3 gap-3">
+            <div className="col-span-2">
+              <label className="block text-xs font-medium text-slate-500 mb-1">IP адрес / хост</label>
+              <input
+                value={networkHost}
+                onChange={e => setNetworkHost(e.target.value)}
+                className="w-full input text-sm font-mono"
+                placeholder={type === 'netup' ? '172.16.0.12' : '192.168.1.50'}
+              />
+            </div>
+            <div>
+              <label className="block text-xs font-medium text-slate-500 mb-1">Порт</label>
+              <input
+                value={networkPort}
+                onChange={e => setNetworkPort(e.target.value)}
+                className="w-full input text-sm font-mono"
+                placeholder={type === 'netup' ? '8880' : '9100'}
+              />
+            </div>
           </div>
+          {type === 'printer' && (
+            <div className="grid grid-cols-2 gap-3">
+              <div>
+                <label className="block text-xs font-medium text-slate-500 mb-1">Кодировка</label>
+                <select
+                  value={encoding}
+                  onChange={e => setEncoding(e.target.value as 'utf8' | 'cp866')}
+                  className="w-full input text-sm"
+                >
+                  <option value="utf8">UTF-8</option>
+                  <option value="cp866">CP866 (DOS Кириллица)</option>
+                </select>
+              </div>
+              <div>
+                <label className="block text-xs font-medium text-slate-500 mb-1">Ширина ленты (точек)</label>
+                <input
+                  value={paperWidth}
+                  onChange={e => setPaperWidth(e.target.value)}
+                  className="w-full input text-sm font-mono"
+                  placeholder="576"
+                />
+                <p className="text-xs text-slate-400 mt-1">58мм=384, 80мм=576</p>
+              </div>
+            </div>
+          )}
         </div>
       )}
 
@@ -766,7 +799,7 @@ function WorkstationCard({
                 <Wifi size={13} />
                 Подключить агента
               </button>
-            ) : (
+            ) : !ws.isOnline ? (
               <button
                 onClick={() => setShowPairModal(true)}
                 className="btn-ghost p-1.5 text-slate-400"
@@ -774,7 +807,7 @@ function WorkstationCard({
               >
                 <RefreshCw size={14} />
               </button>
-            )}
+            ) : null}
 
             <button onClick={deleteWs} className="btn-ghost p-1.5 text-slate-400 hover:text-red-500">
               <Trash2 size={14} />