refactor(admin): group the admin sidebar tabs into sections

The admin sidebar had 11 flat tabs. PageSidebar now supports optional group headings (backward-compatible; the Settings sidebar stays flat), and the admin tabs are grouped into Users, Configuration, Integrations and Maintenance. Group labels added across all locales.

client/src/components/Layout/PageSidebar.tsx

@@ -5,6 +5,9 @@ export interface PageSidebarTab {
   id: string
   label: string
   icon: LucideIcon
+  /** Optional group heading shown above the first tab of each group. Tabs that
+   *  share a group must be contiguous in the array. */
+  group?: string
 }
 
 interface PageSidebarProps {
@@ -160,29 +163,40 @@ function SidebarInner({
         </div>
       )}
       <nav className="flex flex-col gap-1 flex-1">
-        {tabs.map((tab) => {
-          const Icon = tab.icon
-          const active = tab.id === activeTab
-          return (
-            <button
-              key={tab.id}
-              onClick={() => onTabChange(tab.id)}
-              className={`flex items-center gap-2.5 px-3 py-2 rounded-lg text-sm text-left transition-colors ${active ? 'text-content font-semibold' : 'text-content-secondary font-medium'}`}
-              style={{
-                background: active ? 'var(--bg-hover)' : 'transparent',
-              }}
-              onMouseEnter={(e) => {
-                if (!active) e.currentTarget.style.background = 'var(--bg-hover)'
-              }}
-              onMouseLeave={(e) => {
-                if (!active) e.currentTarget.style.background = 'transparent'
-              }}
-            >
-              <Icon size={16} className="shrink-0" />
-              <span className="truncate">{tab.label}</span>
-            </button>
-          )
-        })}
+        {(() => {
+          let lastGroup: string | undefined
+          return tabs.map((tab) => {
+            const Icon = tab.icon
+            const active = tab.id === activeTab
+            const showHeader = !!tab.group && tab.group !== lastGroup
+            lastGroup = tab.group
+            return (
+              <React.Fragment key={tab.id}>
+                {showHeader && (
+                  <div className="text-[10px] font-bold tracking-widest uppercase text-content-faint px-3 mt-3 mb-0.5 first:mt-0">
+                    {tab.group}
+                  </div>
+                )}
+                <button
+                  onClick={() => onTabChange(tab.id)}
+                  className={`flex items-center gap-2.5 px-3 py-2 rounded-lg text-sm text-left transition-colors ${active ? 'text-content font-semibold' : 'text-content-secondary font-medium'}`}
+                  style={{
+                    background: active ? 'var(--bg-hover)' : 'transparent',
+                  }}
+                  onMouseEnter={(e) => {
+                    if (!active) e.currentTarget.style.background = 'var(--bg-hover)'
+                  }}
+                  onMouseLeave={(e) => {
+                    if (!active) e.currentTarget.style.background = 'transparent'
+                  }}
+                >
+                  <Icon size={16} className="shrink-0" />
+                  <span className="truncate">{tab.label}</span>
+                </button>
+              </React.Fragment>
+            )
+          })
+        })()}
       </nav>
       {footer && (
         <div

client/src/pages/AdminPage.tsx

@@ -35,18 +35,22 @@ export default function AdminPage(): React.ReactElement {
     updateInfo, setShowUpdateModal,
   } = admin
 
+  const gUsers = t('admin.group.users')
+  const gConfig = t('admin.group.config')
+  const gIntegration = t('admin.group.integration')
+  const gMaintenance = t('admin.group.maintenance')
   const TABS: PageSidebarTab[] = [
-    { id: 'users', label: t('admin.tabs.users'), icon: Users },
-    { id: 'config', label: t('admin.tabs.config'), icon: SlidersHorizontal },
-    { id: 'defaults', label: t('admin.tabs.defaults'), icon: UserCog },
-    { id: 'addons', label: t('admin.tabs.addons'), icon: Puzzle },
-    { id: 'settings', label: t('admin.tabs.settings'), icon: SettingsIcon },
-    { id: 'notifications', label: t('admin.tabs.notifications'), icon: Bell },
-    { id: 'backup', label: t('admin.tabs.backup'), icon: Database },
-    { id: 'audit', label: t('admin.tabs.audit'), icon: ScrollText },
-    ...(mcpEnabled ? [{ id: 'mcp-tokens', label: t('admin.tabs.mcpTokens'), icon: KeyRound }] : []),
-    { id: 'github', label: t('admin.tabs.github'), icon: GitBranch },
-    ...(devMode ? [{ id: 'dev-notifications', label: 'Dev: Notifications', icon: Bug }] : []),
+    { id: 'users', label: t('admin.tabs.users'), icon: Users, group: gUsers },
+    { id: 'defaults', label: t('admin.tabs.defaults'), icon: UserCog, group: gUsers },
+    { id: 'config', label: t('admin.tabs.config'), icon: SlidersHorizontal, group: gConfig },
+    { id: 'settings', label: t('admin.tabs.settings'), icon: SettingsIcon, group: gConfig },
+    { id: 'addons', label: t('admin.tabs.addons'), icon: Puzzle, group: gConfig },
+    { id: 'notifications', label: t('admin.tabs.notifications'), icon: Bell, group: gIntegration },
+    ...(mcpEnabled ? [{ id: 'mcp-tokens', label: t('admin.tabs.mcpTokens'), icon: KeyRound, group: gIntegration }] : []),
+    { id: 'github', label: t('admin.tabs.github'), icon: GitBranch, group: gIntegration },
+    { id: 'backup', label: t('admin.tabs.backup'), icon: Database, group: gMaintenance },
+    { id: 'audit', label: t('admin.tabs.audit'), icon: ScrollText, group: gMaintenance },
+    ...(devMode ? [{ id: 'dev-notifications', label: 'Dev: Notifications', icon: Bug, group: gMaintenance }] : []),
   ]
 
   return (

shared/src/i18n/ar/admin.ts

@@ -343,5 +343,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'اختر نمطًا…',
   'admin.defaultSettings.mapbox3d': 'المباني والتضاريس ثلاثية الأبعاد',
   'admin.defaultSettings.mapboxQuality': 'وضع الجودة العالية',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/br/admin.ts

@@ -350,5 +350,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Escolha um estilo…',
   'admin.defaultSettings.mapbox3d': 'Edifícios & relevo em 3D',
   'admin.defaultSettings.mapboxQuality': 'Modo de alta qualidade',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/cs/admin.ts

@@ -348,5 +348,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Vyberte styl…',
   'admin.defaultSettings.mapbox3d': '3D budovy & terén',
   'admin.defaultSettings.mapboxQuality': 'Režim vysoké kvality',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/de/admin.ts

@@ -353,5 +353,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Stil auswählen…',
   'admin.defaultSettings.mapbox3d': '3D-Gebäude & Gelände',
   'admin.defaultSettings.mapboxQuality': 'Hochqualitätsmodus',
+  'admin.group.users': 'Benutzer',
+  'admin.group.config': 'Konfiguration',
+  'admin.group.integration': 'Integrationen',
+  'admin.group.maintenance': 'Wartung',
 };
 export default admin;

shared/src/i18n/en/admin.ts

@@ -348,5 +348,9 @@ const admin: TranslationStrings = {
     "Remove all of this user's passkeys (e.g. on a lost device). They can still sign in with their password.",
   'admin.passkey.resetConfirm': 'Remove all passkeys for {name}?',
   'admin.passkey.resetDone': 'Removed {count} passkey(s)',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/es/admin.ts

@@ -359,5 +359,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Elige un estilo…',
   'admin.defaultSettings.mapbox3d': 'Edificios y terreno en 3D',
   'admin.defaultSettings.mapboxQuality': 'Modo de alta calidad',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/fr/admin.ts

@@ -356,5 +356,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Choisissez un style…',
   'admin.defaultSettings.mapbox3d': 'Bâtiments & terrain en 3D',
   'admin.defaultSettings.mapboxQuality': 'Mode haute qualité',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/gr/admin.ts

@@ -363,5 +363,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Επιλέξτε ένα στυλ…',
   'admin.defaultSettings.mapbox3d': 'Κτίρια & ανάγλυφο 3D',
   'admin.defaultSettings.mapboxQuality': 'Λειτουργία υψηλής ποιότητας',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/hu/admin.ts

@@ -355,5 +355,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Válassz stílust…',
   'admin.defaultSettings.mapbox3d': '3D épületek & domborzat',
   'admin.defaultSettings.mapboxQuality': 'Kiváló minőségű mód',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/id/admin.ts

@@ -351,5 +351,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Pilih gaya…',
   'admin.defaultSettings.mapbox3d': 'Bangunan & medan 3D',
   'admin.defaultSettings.mapboxQuality': 'Mode kualitas tinggi',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/it/admin.ts

@@ -354,5 +354,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Scegli uno stile…',
   'admin.defaultSettings.mapbox3d': 'Edifici & terreno in 3D',
   'admin.defaultSettings.mapboxQuality': 'Modalità alta qualità',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/ja/admin.ts

@@ -339,5 +339,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'スタイルを選択…',
   'admin.defaultSettings.mapbox3d': '3D の建物と地形',
   'admin.defaultSettings.mapboxQuality': '高品質モード',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/ko/admin.ts

@@ -342,5 +342,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': '스타일을 선택하세요…',
   'admin.defaultSettings.mapbox3d': '3D 건물 & 지형',
   'admin.defaultSettings.mapboxQuality': '고품질 모드',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/nl/admin.ts

@@ -354,5 +354,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Kies een stijl…',
   'admin.defaultSettings.mapbox3d': '3D-gebouwen & terrein',
   'admin.defaultSettings.mapboxQuality': 'Hogekwaliteitsmodus',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/pl/admin.ts

@@ -358,5 +358,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Wybierz styl…',
   'admin.defaultSettings.mapbox3d': 'Budynki i teren 3D',
   'admin.defaultSettings.mapboxQuality': 'Tryb wysokiej jakości',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/ru/admin.ts

@@ -353,5 +353,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Выберите стиль…',
   'admin.defaultSettings.mapbox3d': '3D-здания и рельеф',
   'admin.defaultSettings.mapboxQuality': 'Режим высокого качества',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/sv/admin.ts

@@ -348,5 +348,9 @@ const admin: TranslationStrings = {
     "Ta bort alla den här användarens inloggningsnycklar (t.ex. om enheten har försvunnit). Användaren kan fortfarande logga in med sitt lösenord.",
   'admin.passkey.resetConfirm': 'Ta bort alla åtkomstnycklar för {name}?',
   'admin.passkey.resetDone': 'Tog bort {count} inloggningsnycklar',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/tr/admin.ts

@@ -357,5 +357,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Bir stil seçin…',
   'admin.defaultSettings.mapbox3d': '3D binalar & arazi',
   'admin.defaultSettings.mapboxQuality': 'Yüksek kalite modu',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/uk/admin.ts

@@ -353,5 +353,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': 'Виберіть стиль…',
   'admin.defaultSettings.mapbox3d': '3D-будівлі та рельєф',
   'admin.defaultSettings.mapboxQuality': 'Режим високої якості',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/zh-TW/admin.ts

@@ -335,5 +335,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': '選擇樣式…',
   'admin.defaultSettings.mapbox3d': '3D 建築物與地形',
   'admin.defaultSettings.mapboxQuality': '高品質模式',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;

shared/src/i18n/zh/admin.ts

@@ -333,5 +333,9 @@ const admin: TranslationStrings = {
   'admin.defaultSettings.mapboxStylePlaceholder': '选择一种样式…',
   'admin.defaultSettings.mapbox3d': '3D 建筑与地形',
   'admin.defaultSettings.mapboxQuality': '高质量模式',
+  'admin.group.users': 'Users',
+  'admin.group.config': 'Configuration',
+  'admin.group.integration': 'Integrations',
+  'admin.group.maintenance': 'Maintenance',
 };
 export default admin;