Show a clear waiting-for-input state instead of continuing to animate the spinner

Sometimes the CLI asks me a question but the activity spinner keeps rotating. This makes it look like the agent is still working, when it actually needs my response. It's easy to leave it running and only later realize it was waiting for me.

Suggested behavior

• When the agent is waiting for an answer or approval, freeze or replace the spinner and show Waiting for your input.
• Resume the animation when my response is submitted and processing continues.
• If background agents or commands are still running, show that separately without hiding the fact that my input is needed.

The waiting state should be distinguishable through text or an icon, not just color. This would make it much easier to tell at a glance whether to wait or take action.

Verfolge zunächst die Behandlung des CLI-Spinners und der Frage- oder Genehmigungsaufforderung. Füge einen eindeutigen Text- oder Icon-Zustand für das Warten auf Eingaben hinzu, setze die Animation nach einer Antwort fort und halte alle Hintergrundaktivitäten separat sichtbar. Überprüfe, dass der Wartezustand klar erkennbar ist, ohne auf Farbe angewiesen zu sein.