refactor: Naming-Konventionen für digitaleEingaenge umgesetzt

- digitaleEingaengeMockData.js = strukturierte Datenbasis für Development
- digitaleEingaengeAPIHandler.ts = API-Endpunkt zur Auslieferung im Dev
- fetchDigitaleEingaengeService.ts = Service zur Umwandlung von window-Variablen
- Naming-Schema sorgt für klare Struktur und gute Lernbarkeit

services/fetchSystemSettingsService.ts

@@ -0,0 +1,54 @@
+// /services/fetchSystemSettingsService.ts
+export const fetchSystemSettings = async () => {
+  try {
+    if (typeof window === "undefined") return null;
+
+    const isDev = process.env.NODE_ENV === "development";
+    const scriptSrc =
+      process.env.NEXT_PUBLIC_NODE_ENV === "development"
+        ? "/apiMockData/SERVICE/system.js"
+        : "/CPL?/CPL/SERVICE/system.js";
+
+    await new Promise<void>((resolve, reject) => {
+      const script = document.createElement("script");
+      script.src = scriptSrc;
+      script.async = true;
+      script.onload = () => resolve();
+      script.onerror = () => reject("❌ Fehler beim Laden von system.js");
+      document.body.appendChild(script);
+    });
+
+    const {
+      win_deviceName,
+      win_mac1,
+      win_ip,
+      win_subnet,
+      win_gateway,
+      win_cplInternalTimestamp,
+      win_ntp1,
+      win_ntp2,
+      win_ntp3,
+      win_ntpTimezone,
+      win_ntpActive,
+      win_appVersion,
+    } = window as any;
+
+    return {
+      deviceName: win_deviceName,
+      mac1: win_mac1,
+      ip: win_ip,
+      subnet: win_subnet,
+      gateway: win_gateway,
+      cplInternalTimestamp: win_cplInternalTimestamp,
+      ntp1: win_ntp1,
+      ntp2: win_ntp2,
+      ntp3: win_ntp3,
+      ntpTimezone: win_ntpTimezone,
+      ntpActive: win_ntpActive === "1",
+      appVersion: win_appVersion,
+    };
+  } catch (error) {
+    console.error("❌ Fehler beim Laden der Systemdaten:", error);
+    return null;
+  }
+};