fix(backends): safeID server name matching + routing priority swap

Backend Detail page: HAProxy stat rows use safeID(name) as server token
(spaces/dots → '_') but the UI matched on the raw DB name, so servers
with non-alphanumeric names never showed live status. Added matching
safeID helper in TypeScript (mirrors haproxy.go implementation).

Routing Rules: commit priority up/down swap buttons (developed in a
previous session, were left uncommitted).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

management-ui/src/pages/Backends/Detail.tsx

@@ -85,6 +85,13 @@ function fmtBytes(n: number): string {
   return n + ' B'
 }
 
+// Mirror of haproxy.go safeID: replaces any char outside [a-zA-Z0-9_-] with '_'.
+// HAProxy uses this to generate server tokens; we need it to match stat rows.
+function safeID(s: string): string {
+  const out = s.replace(/[^a-zA-Z0-9_-]/g, '_')
+  return out || 'unnamed'
+}
+
 export default function BackendDetailPage() {
   const { t } = useTranslation()
   const { id } = useParams<{ id: string }>()
@@ -316,7 +323,7 @@ function ServerPanel({ backendID, haproxyStats, isViewer }: { backendID: number;
       title: t('backends.server.live'), key: 'live', width: 160,
       render: (_, r) => {
         const stat = haproxyStats.find(
-          s => s.backend === `eg_backend_${backendID}` && s.server === r.name
+          s => s.backend === `eg_backend_${backendID}` && s.server === safeID(r.name)
         )
         if (!stat) return <Text type="secondary" style={{ fontSize: 11 }}>—</Text>
         const color = stat.status === 'UP' ? 'green' : stat.status === 'no check' ? 'default' : 'red'