Expired sessions cause a panic

[benalleng]

We need to get some proper error handling and this is just one example of some missing error handling that is a blocker for moving forward.

ERROR liana_gui:633: panic occurred at line 45 of file lianad/src/payjoin/receiver.rs: Some("Failed to extract request: V2(SessionError(Expired(SystemTime { tv_sec: 1753496994, tv_nsec: 994737411 })))")
   0: liana_gui::setup_panic_hook::{{closure}}

[benalleng]

I've found an additional place where this panics when trying to view PSBTs

2025-08-18T15:09:52.519517Z ERROR liana_gui:633: panic occurred at line 472 of file lianad/src/commands/mod.rs: Some(
"called `Result::unwrap()` on an `Err` value: ReplayError(SessionExpired(SystemTime { tv_sec: 1755279287, tv_nsec: 8305
28450 }))")

on this function.

    pub fn get_payjoin_info(&self, txid: &bitcoin::Txid) -> Result<PayjoinStatus, CommandError> {
        let mut db_conn = self.db.connection();
        info!("Getting payjoin info for txid: {:?}", txid);
        if let Some(session_id) = db_conn.get_payjoin_receiver_session_id_from_txid(txid) {
            let persister =
                ReceiverPersister::from_id(Arc::new(self.db.clone()), session_id.clone());
            let (state, _) = replay_receiver_event_log(&persister).unwrap();
            return Ok(state.into());
        }

        if let Some(session_id) = db_conn.get_payjoin_sender_session_id_from_txid(txid) {
            log::info!("Checking sender session: {:?}", session_id);
            let persister = SenderPersister::from_id(Arc::new(self.db.clone()), session_id.clone());
            let (state, _) = replay_sender_event_log(&persister).unwrap();
            log::info!("Sender state: {:?}", state);
            return Ok(state.into());
        }

        Ok(PayjoinStatus::Unknown)
    }