fix(#3): Address PR comments

src/lib/components/NetworkDiagram.svelte

@@ -3,7 +3,7 @@
 	import cytoscape from 'cytoscape';
 	import dagre from 'cytoscape-dagre';
 	import loadNetworkData from '../data/loadNetworkData';
-	import { transformNetworkDataToGraph } from '../graph/transformNetworkData';
+	import transformNetworkDataToGraph from '../graph/transformNetworkData';
 	import Modal from './Modal.svelte';
 	import type { NetworkData } from '../types';
 	import type {
@@ -1139,6 +1139,7 @@
 			<button
 				type="button"
 				class:active={cameraMode === 'readable'}
+				aria-pressed={cameraMode === 'readable'}
 				on:click={() => applyCameraMode('readable')}
 			>
 				Readable Fit
@@ -1146,11 +1147,12 @@
 			<button
 				type="button"
 				class:active={cameraMode === 'overview'}
+				aria-pressed={cameraMode === 'overview'}
 				on:click={() => applyCameraMode('overview')}
 			>
 				Overview
 			</button>
-			<button type="button" on:click={toggleEthernetLabels}>
+			<button type="button" aria-pressed={showEthernetLabels} on:click={toggleEthernetLabels}>
 				{showEthernetLabels ? 'Hide Ethernet Labels' : 'Show Ethernet Labels'}
 			</button>
 			<button

src/lib/graph/transformNetworkData.ts

@@ -63,7 +63,7 @@ function edgeSpeed(a: number | undefined, b: number | undefined): number | undef
 	return undefined;
 }
 
-export function transformNetworkDataToGraph(data: NetworkData): GraphTransformResult {
+export default function transformNetworkDataToGraph(data: NetworkData): GraphTransformResult {
 	const nodes: GraphNodeElement[] = [];
 	const edges: GraphEdgeElement[] = [];
 	const warnings: string[] = [];
@@ -118,16 +118,16 @@ export function transformNetworkDataToGraph(data: NetworkData): GraphTransformRe
 				nodeHeight: 110,
 				details: {
 					type: 'machine',
-					name: machine.machineName,
-					ip: machine.ipAddress,
-					role: machine.role,
-					os: machine.operatingSystem,
-					cpu: machine.hardware.cpu,
-					ram: machine.hardware.ram,
-					gpu: machine.hardware.gpu,
-					ports: machinePortsList,
-					vmCount: machineVms.length,
-					vms: machineVms
+						name: machine.machineName,
+						ip: machine.ipAddress,
+						role: machine.role,
+						os: machine.operatingSystem,
+						cpu: machine.hardware?.cpu ?? 'Unknown',
+						ram: machine.hardware?.ram ?? 'Unknown',
+						gpu: machine.hardware?.gpu ?? undefined,
+						ports: machinePortsList,
+						vmCount: machineVms.length,
+						vms: machineVms
 				}
 			}
 		});