Cool to see more people building phone-first agent control. I've been working on the permission layer side of this same problem. One thing I learned: session management and permission approval have very different latency requirements. Sessions you check every few minutes. Permission requests need sub-second response or your agent sits idle burning tokens. Push notifications > browser polling for that reason.
i was sick of pushengage and onesignal with their weird experience for push notifications. I wanted the resend like experience and i did not want the nasty app reviews, so best of both worlds, pushary was born christmas 2025 where you can send notification flows that helps you upsell as a founder. (without an app by the way for both ios and android)