Fix: 修正H3C解析器输出索引

- outputs[4] 是 display lldp neighbor-information
- outputs[5] 是 display arp
- 修正后邻居和ARP表解析正确

internal/device/h3c.go

@@ -73,8 +73,8 @@ func (p *H3CParser) Parse(device *models.Device, outputs []string) error {
 	
 	// 解析ARP表用于MAC到IP映射（允许失败）
 	arpTable := make(map[string]string)
-	if outputs[4] != "" {
+	if outputs[5] != "" {
-		arpTable = p.parseARPTable(outputs[4])
+		arpTable = p.parseARPTable(outputs[5])
 		if len(arpTable) == 0 {
 			fmt.Printf("Warning: ARP table is empty for device %s\n", device.IP)
 		}
@@ -83,7 +83,7 @@ func (p *H3CParser) Parse(device *models.Device, outputs []string) error {
 	}
 	
 	// 解析LLDP邻居，使用ARP表进行MAC到IP的映射
-	device.Neighbors = p.parseNeighbors(outputs[3], arpTable)
+	device.Neighbors = p.parseNeighbors(outputs[4], arpTable)
 	
 	fmt.Printf("Device %s: %d interfaces, %d neighbors, %d ARP entries\n",
 		device.IP, len(device.Interfaces), len(device.Neighbors), len(arpTable))