simplifications and refactorings

frontend/src/App.tsx

@@ -56,7 +56,7 @@ function Shell({
 			<AppBar position="sticky" color="inherit" elevation={0}>
 				<Toolbar sx={{ display: "flex", gap: 2, minHeight: 68 }}>
 					<Typography variant="h6" sx={{ mr: 2, fontWeight: 700 }}>
-						Media Library Viewer
+						Manage
 					</Typography>
 					<Tabs
 						value={current}
@@ -147,7 +147,7 @@ function SignInScreen({ onSignIn }: { onSignIn: () => void }) {
 					<Stack spacing={2} sx={{ alignItems: "center", textAlign: "center" }}>
 						<Typography variant="h5">Sign in required</Typography>
 						<Typography variant="body2" color="text.secondary">
-							Use your Authentik account to access the media library viewer.
+							Use your Authentik account to access Manage.
 						</Typography>
 						<Button variant="contained" onClick={onSignIn}>
 							Sign in with OIDC