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/RoutingRules/index.tsx

@@ -1,7 +1,7 @@
-import { useState } from 'react'
+import { useMemo, useState } from 'react'
 import { Button, Form, Input, InputNumber, Modal, Select, Space, Switch, Tag, Tooltip, message } from 'antd'
 import type { ColumnsType } from 'antd/es/table'
-import { BranchesOutlined, PlusOutlined } from '@ant-design/icons'
+import { ArrowDownOutlined, ArrowUpOutlined, BranchesOutlined, PlusOutlined } from '@ant-design/icons'
 import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
 import { useTranslation } from 'react-i18next'
 import DataTable from '../../components/DataTable'
@@ -135,6 +135,21 @@ export default function RoutingRulesPage() {
     onError: (e: Error) => message.error(e.message),
   })
 
+  const sortedRules = useMemo(
+    () => [...(rules ?? [])].sort((a, b) => a.priority - b.priority),
+    [rules],
+  )
+
+  const swapRules = useMutation({
+    mutationFn: async ({ a, b }: { a: RoutingRule; b: RoutingRule }) => {
+      const stripMeta = ({ id: _id, created_at: _ca, updated_at: _ua, ...r }: RoutingRule) => r
+      await apiClient.put(`/routing-rules/${a.id}`, { ...stripMeta(a), priority: b.priority })
+      await apiClient.put(`/routing-rules/${b.id}`, { ...stripMeta(b), priority: a.priority })
+    },
+    onSuccess: () => { void qc.invalidateQueries({ queryKey: ['routing-rules'] }) },
+    onError: (e: Error) => message.error(e.message),
+  })
+
   const columns: ColumnsType<RoutingRule> = [
     { title: t('routing.domain'), dataIndex: 'domain_id', key: 'domain', render: (id: number) => domainName(id) },
     { title: t('routing.pathPrefix'), dataIndex: 'path_prefix', key: 'path' },
@@ -168,6 +183,27 @@ export default function RoutingRulesPage() {
         />
       ),
     },
+    {
+      title: '', key: 'move', width: 64,
+      render: (_, row) => {
+        const idx = sortedRules.findIndex(r => r.id === row.id)
+        const swapping = swapRules.isPending
+        return (
+          <Space size={2}>
+            <Tooltip title={t('fw.rule.moveUp')}>
+              <Button size="small" icon={<ArrowUpOutlined />}
+                disabled={isViewer || idx <= 0 || swapping}
+                onClick={() => swapRules.mutate({ a: row, b: sortedRules[idx - 1] })} />
+            </Tooltip>
+            <Tooltip title={t('fw.rule.moveDown')}>
+              <Button size="small" icon={<ArrowDownOutlined />}
+                disabled={isViewer || idx >= sortedRules.length - 1 || swapping}
+                onClick={() => swapRules.mutate({ a: row, b: sortedRules[idx + 1] })} />
+            </Tooltip>
+          </Space>
+        )
+      },
+    },
     {
       title: t('common.actions'), key: 'actions',
       render: (_, row) => (