feat(14-02): integrate wireless tabs into device detail and add wireless links page

- Add Stations tab to StandardConfigSidebar (Monitor section)
- Render WirelessStationTable + RFStatsCard in stations tab
- Create standalone wireless-links route page
- Update Sidebar nav to point Wireless Links to tenant-scoped page

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/components/layout/Sidebar.tsx

@@ -120,11 +120,18 @@ export function Sidebar() {
               },
             ]
           : []),
-        {
-          label: 'Wireless',
-          href: '/wireless',
-          icon: Wifi,
-        },
+        ...(!isSuperAdmin(user) && user?.tenant_id
+          ? [{
+              label: 'Wireless Links',
+              href: `/tenants/${user.tenant_id}/wireless-links`,
+              icon: Wifi,
+            }]
+          : [{
+              label: 'Wireless Links',
+              href: '/wireless',
+              icon: Wifi,
+            }]
+        ),
         {
           label: 'Traffic',
           href: '/traffic',