ITEM6 B4: frontend reshaping — xray page retired, stats switches to settings, template read paths closed

- Delete the xray settings page (routes/menu/title), geodata UI/service,
  XraySettingController/Service and routing-sync write paths; the stored
  xrayTemplateConfig row loses its last readers (GetXrayConfigTemplate now
  returns the embedded factory template; B1 already deleted the row).
- Settings GeneralTab gains the four trafficStatsSwitches switches
  (settings.trafficStatsSwitches, B1) with the dual warning copy; entity
  AllSetting carries the key end to end (TestTrafficStatsSwitchesPlumbing).
- Tag-directory consumers (panelOutbound, mtproto egress, node/host
  outbound pickers) move from POST /xray/ to GET /server/outboundDirectory.
- Shared Mux/Sockopt forms and balancer helpers relocated to lib/xray;
  converter preserves sniffing ips/domains exclusions into the panel
  sidecar instead of dropping them (B2 gap closed by retention).
- Freedom final-rules DB fix seeders retired; getDefaultJsonConfig
  endpoint removed (no in-repo consumer); locales pruned to referenced
  keys (pages.xray 331 -> 68) plus the five new settings keys.

frontend/src/layouts/AppSidebar.tsx

@@ -217,10 +217,7 @@ export default function AppSidebar() {
       { key: '/clients', icon: 'team', title: t('menu.clients') },
       { key: '/nodes', icon: 'cluster', title: t('menu.nodes') },
       { key: '/hosts', icon: 'hosts', title: t('menu.hosts') },
-      { key: '/outbound', icon: 'outbound', title: t('menu.outbounds') },
-      { key: '/routing', icon: 'routing', title: t('menu.routing') },
       { key: '/settings', icon: 'setting', title: t('menu.settings') },
-      { key: '/xray', icon: 'tool', title: t('menu.xray') },
       { key: LOGOUT_KEY, icon: 'logout', title: t('logout') },
     ],
     [t],
@@ -269,22 +266,14 @@ export default function AppSidebar() {
     return children;
   }, [t, showSubFormats, showSubBalancers]);
 
-  const xrayChildren = useMemo<NonNullable<MenuProps['items']>>(
-    () => [{ key: '/xray#basic', icon: <SettingOutlined />, label: t('pages.xray.basicTemplate') }],
-    [t],
-  );
-
   const settingsActive = pathname === '/settings';
-  const xrayActive = pathname === '/xray';
   const selectedKey = settingsActive
     ? `/settings${hash || '#general'}`
-    : xrayActive
-      ? `/xray${hash || '#basic'}`
-      : pathname === ''
-        ? '/'
-        : pathname;
+    : pathname === ''
+      ? '/'
+      : pathname;
 
-  const openSubmenu = settingsActive ? '/settings' : xrayActive ? '/xray' : null;
+  const openSubmenu = settingsActive ? '/settings' : null;
   const [openKeys, setOpenKeys] = useState<string[]>(() => (openSubmenu ? [openSubmenu] : []));
   if (openSubmenu && !openKeys.includes(openSubmenu)) {
     setOpenKeys([...openKeys, openSubmenu]);
@@ -297,12 +286,9 @@ export default function AppSidebar() {
         if (tab.key === '/settings') {
           return { key: tab.key, icon: <Icon />, label: tab.title, children: settingsChildren };
         }
-        if (tab.key === '/xray') {
-          return { key: tab.key, icon: <Icon />, label: tab.title, children: xrayChildren };
-        }
         return { key: tab.key, icon: <Icon />, label: tab.title, title: '' };
       }),
-    [settingsChildren, xrayChildren],
+    [settingsChildren],
   );
 
   const openLink = useCallback(