fix(ui): trim auth nudge to one line

Replace the multi-paragraph auth notice with a single concise line:
"Enable and authenticate this app once to connect — or disable the
requirement in Settings."

Claude-Session: https://claude.ai/code/session_01Baan9JmzR43uxxRUh7CAMF
Signed-off-by: Mohammod Al Amin Ashik <maa.ashik00@gmail.com>

Author: its-mash

apps/desktop/src/features/workspaces/WorkspaceInstallPanel.tsx

@@ -163,13 +163,9 @@ export function WorkspaceInstallPanel({ workspaceRoot }: { workspaceRoot: string
         >
           <ShieldOff className="mt-0.5 h-4 w-4 flex-shrink-0 text-amber-600 dark:text-amber-400" />
           <div className="min-w-0 flex-1">
-            <p className="font-medium text-amber-800 dark:text-amber-300">
-              You&apos;ll enable and authenticate this app once for it to work.
-            </p>
-            <p className="mt-0.5 text-amber-700 dark:text-amber-400">
-              With authentication on, you approve and sign the app in a single time, then it
-              connects. The client authentication requirement can be disabled in Settings → Security
-              — apps then connect with just the URL and this workspace header.
+            <p className="text-amber-800 dark:text-amber-300">
+              Enable and authenticate this app once to connect — or disable the requirement in
+              Settings.
             </p>
             <Button
               variant="secondary"