PSBT/MuSig2 coordination over Nostr relays: transport invariants for nonce safety under at-least-once delivery

The explanation regarding the three-state model has been clarified effectively, enhancing comprehension of the system's operations. A critical aspect to consider is how users interact with the wallet during specific states such as reconnecting or waiting on a peer. It is essential to determine whether it is safe for users to close and reopen their wallet in these scenarios without risking data loss or corruption, or if they should maintain the session actively open until the process completes. This consideration is crucial because it addresses a common scenario that many users might face, ensuring their experience is seamless and secure. Understanding and documenting the correct procedure here will help in preventing user errors and improving overall system reliability.