refactor(ip-parsing): centralize multi-delim splitting in splitIps

Extend splitIps to accept comma/semicolon/newline delimiters with dedupe,
and reuse it in DetailPanel for both the IP list and the service-URL host.
Fixes ServiceBadge links pointing at concatenated string when IPs were
entered with ';' or newline separators. Adds tests for new delimiters.

frontend/src/components/panels/DetailPanel.tsx

@@ -6,7 +6,7 @@ import { Input } from '@/components/ui/input'
 import { useCanvasStore } from '@/stores/canvasStore'
 import { NODE_TYPE_LABELS, STATUS_COLORS, type ServiceInfo, type NodeData, type NodeProperty } from '@/types'
 import { getServiceUrl } from '@/utils/serviceUrl'
-import { primaryIp } from '@/utils/maskIp'
+import { splitIps } from '@/utils/maskIp'
 import { PROPERTY_ICONS, PROPERTY_ICON_NAMES, resolvePropertyIcon } from '@/utils/propertyIcons'
 import type { Node } from '@xyflow/react'
 
@@ -85,14 +85,8 @@ export function DetailPanel({ onEdit }: DetailPanelProps) {
   const { data } = node
   const services = data.services ?? []
   const statusColor = STATUS_COLORS[data.status]
-  const host = data.ip ? primaryIp(data.ip) : data.hostname
-  const ipAddresses = data.ip
-    ? data.ip
-        .split(/[\n,;]+/)
-        .map((ip) => primaryIp(ip.trim()))
-        .filter(Boolean)
-        .filter((ip, index, all) => all.indexOf(ip) === index)
-    : []
+  const ipAddresses = data.ip ? splitIps(data.ip) : []
+  const host = ipAddresses[0] ?? data.hostname
 
   const handleDelete = () => {
     if (confirm(`Delete "${data.label}"?`)) {

frontend/src/components/panels/__tests__/DetailPanel.test.tsx

@@ -446,6 +446,20 @@ describe('DetailPanel', () => {
       expect(screen.getByRole('link', { name: /192\.168\.1\.11/ })).toBeDefined()
       expect(screen.queryByText(',')).toBeNull()
     })
+
+    it('renders separate links for semicolon-separated IPs', () => {
+      setupStore({ ip: '192.168.1.10; 192.168.1.11' })
+      render(<DetailPanel onEdit={vi.fn()} />)
+      expect(screen.getByRole('link', { name: /192\.168\.1\.10/ }).getAttribute('href')).toBe('http://192.168.1.10')
+      expect(screen.getByRole('link', { name: /192\.168\.1\.11/ }).getAttribute('href')).toBe('http://192.168.1.11')
+    })
+
+    it('renders separate links for newline-separated IPs', () => {
+      setupStore({ ip: '192.168.1.10\n192.168.1.11' })
+      render(<DetailPanel onEdit={vi.fn()} />)
+      expect(screen.getByRole('link', { name: /192\.168\.1\.10/ }).getAttribute('href')).toBe('http://192.168.1.10')
+      expect(screen.getByRole('link', { name: /192\.168\.1\.11/ }).getAttribute('href')).toBe('http://192.168.1.11')
+    })
   })
 
   describe('ServiceBadge rendering', () => {