fix: remove TUI boolean bug, P2P unwrap violation, and WebTransport placeholder

- Remove `|| true` from cursor positioning condition in v2_tui.rs
- Replace .lock().unwrap() with .expect() in P2P routing tests
- Remove assert!(true) placeholder in WebTransport test

crates/quicprochat-p2p/src/routing.rs

@@ -413,10 +413,10 @@ mod tests {
             };
 
             router.add_peer(pk, route);
-            assert!(router.peers.lock().unwrap().contains_key(&pk));
+            assert!(router.peers.lock().expect("routing table lock poisoned").contains_key(&pk));
 
             router.remove_peer(&pk);
-            assert!(!router.peers.lock().unwrap().contains_key(&pk));
+            assert!(!router.peers.lock().expect("routing table lock poisoned").contains_key(&pk));
 
             drop(router);
             Arc::try_unwrap(node).ok().expect("sole owner").close().await;