feat(eco-view-peripherals): encapsulate networkRanges as internal @state and add public getter/setter methods

ts_web/views/eco-view-peripherals/eco-view-peripherals.ts

@@ -527,12 +527,26 @@ export class EcoViewPeripherals extends DeesElement {
   @property({ type: String })
   accessor activeCategory: TPeripheralCategory = 'all';
 
-  @property({ type: Array })
+  @state()
   accessor networkRanges: INetworkRange[] = [];
 
   @state()
   accessor isScanning = false;
 
+  /**
+   * Set the initial network ranges (e.g., loaded from backend)
+   */
+  public setNetworkRanges(ranges: INetworkRange[]): void {
+    this.networkRanges = [...ranges];
+  }
+
+  /**
+   * Get the current network ranges
+   */
+  public getNetworkRanges(): INetworkRange[] {
+    return [...this.networkRanges];
+  }
+
   @state()
   accessor newNetworkInput = '';