fix(network): исправить keepalive GRE и каталог IPsec

app/(main)/gre/page.tsx

@@ -357,6 +357,10 @@ function GrePageContent({ selectedServerId, selectedTunnelId, allTunnelsHref, on
       setFormError("Для IPsec нужен PSK не короче 8 символов")
       return
     }
+    if (![tForm.keepaliveInterval, tForm.keepaliveRetries].every(value => Number.isInteger(value) && value >= 1 && value <= 4294967295)) {
+      setFormError("Keepalive и число попыток: целые значения от 1 до 4294967295. Ноль не поддерживается этим API.")
+      return
+    }
     if (!beginOperation(tForm.serverId)) { setFormError("Устройство не готово к изменению GRE; повторите опрос"); return }
     formLock.current = true
     try {
@@ -885,11 +889,11 @@ function GrePageContent({ selectedServerId, selectedTunnelId, allTunnelsHref, on
                     <FormField label="MTU" hint="По умолч. 1476">
                       <Input aria-label="MTU" type="number" className="font-mono" value={tForm.mtu} onChange={(e) => setT("mtu", Number(e.target.value))} />
                     </FormField>
-                    <FormField label="Keepalive, с" hint="0 = откл.">
-                      <Input aria-label="Keepalive, с" type="number" className="font-mono" value={tForm.keepaliveInterval} onChange={(e) => setT("keepaliveInterval", Number(e.target.value))} />
+                    <FormField label="Keepalive, с" hint="Целое число, минимум 1 с">
+                      <Input aria-label="Keepalive, с" type="number" min={1} max={4294967295} step={1} className="font-mono" value={tForm.keepaliveInterval} onChange={(e) => setT("keepaliveInterval", Number(e.target.value))} />
                     </FormField>
                     <FormField label="Попытки">
-                      <Input aria-label="Попытки" type="number" className="font-mono" value={tForm.keepaliveRetries} onChange={(e) => setT("keepaliveRetries", Number(e.target.value))} />
+                      <Input aria-label="Попытки" type="number" min={1} max={4294967295} step={1} className="font-mono" value={tForm.keepaliveRetries} onChange={(e) => setT("keepaliveRetries", Number(e.target.value))} />
                     </FormField>
                   </div>
                   <FormField label="DSCP">

app/(main)/network-map/page.tsx

@@ -125,7 +125,7 @@ interface ApiGreTunnelRow {
   localInnerIp: string
   remoteInnerIp: string
   poolId: string
-  ipsec: null
+  ipsec: { secret: "" } | null
   mtu: number
   keepaliveInterval: number
   keepaliveRetries: number
@@ -147,7 +147,7 @@ function apiGreToGreTunnel(t: ApiGreTunnelRow): GreTunnel {
     localInnerIp: t.localInnerIp,
     remoteInnerIp: t.remoteInnerIp,
     poolId: t.poolId || "live",
-    ipsec: null,
+    ipsec: t.ipsec,
     mtu: t.mtu,
     keepaliveInterval: t.keepaliveInterval,
     keepaliveRetries: t.keepaliveRetries,