refactor: rename and reorder dev panel tabs for clarity

- Rename "API Keys" → "Desa Mandiri Keys" (tab + panel title + description)
- Rename "Settings" → "App Config" (tab + panel title)
- Move "Desa Mandiri Keys" to last position with a divider separator
- Import Divider from @mantine/core

src/frontend/routes/dev.tsx

@@ -9,6 +9,7 @@ import {
   Card,
   Center,
   Container,
+  Divider,
   Group,
   Loader,
   Menu,
@@ -77,7 +78,7 @@ import { notifications } from '@mantine/notifications'
 import { type Role, useLogout, useSession } from '@/frontend/hooks/useAuth'
 import { usePresence } from '@/frontend/hooks/usePresence'
 
-const validTabs = ['overview', 'operators', 'bugs', 'app-logs', 'activity-logs', 'database', 'project', 'api-keys', 'settings'] as const
+const validTabs = ['overview', 'operators', 'bugs', 'app-logs', 'activity-logs', 'database', 'project', 'settings', 'api-keys'] as const
 
 export const Route = createFileRoute('/dev')({
   validateSearch: (search: Record<string, unknown>) => ({
@@ -117,8 +118,9 @@ const navItems = [
   // { label: 'Activity Logs', icon: TbActivity, key: 'activity-logs' },
   { label: 'Database', icon: TbDatabase, key: 'database' },
   { label: 'Project', icon: TbSitemap, key: 'project' },
-  { label: 'API Keys', icon: TbKey, key: 'api-keys' },
-  { label: 'Settings', icon: TbSettings, key: 'settings' },
+  { label: 'App Config', icon: TbSettings, key: 'settings' },
+  { divider: true, key: '__divider-external__' },
+  { label: 'Desa Mandiri Keys', icon: TbKey, key: 'api-keys' },
 ]
 
 function DevPage() {
@@ -201,7 +203,8 @@ function DevPage() {
         <AppShell.Section grow>
           <Stack gap={4}>
             {navItems.map((item) => {
-              const Icon = item.icon
+              if (item.divider) return <Divider key={item.key} my={4} />
+              const Icon = item.icon!
               if (collapsed) {
                 return (
                   <Tooltip key={item.key} label={item.label} position="right">
@@ -1590,7 +1593,7 @@ function SettingsPanel() {
     <Stack>
       <Group justify="space-between">
         <div>
-          <Title order={3}>Application Settings</Title>
+          <Title order={3}>App Config</Title>
           <Text size="sm" c="dimmed">Manage the URL API and API Key for each application.</Text>
         </div>
         <Button leftSection={<TbApps size={16} />} onClick={openAdd}>Add App</Button>
@@ -1798,8 +1801,8 @@ function ApiKeysPanel() {
     <Stack>
       <Group justify="space-between">
         <div>
-          <Title order={3}>API Keys</Title>
-          <Text size="sm" c="dimmed">Kelola API key untuk akses endpoint /api/ai/*</Text>
+          <Title order={3}>Desa Mandiri Keys</Title>
+          <Text size="sm" c="dimmed">Manage access tokens for the Desa Mandiri system</Text>
         </div>
         <Button leftSection={<TbKey size={14} />} onClick={openCreate}>
           Buat Key Baru