Enable persistent storage in multiverse

And fix an issue that would cause a crash because a timeline wasn't
initialized and we tried to unwrap it later.

Author: bnjbvr

labs/multiverse/src/main.rs

@@ -64,6 +64,10 @@ async fn main() -> anyhow::Result<()> {
     let config_path = env::args().nth(2).unwrap_or("/tmp/".to_owned());
     let client = configure_client(server_name, config_path).await?;
 
+    let ec = client.event_cache();
+    ec.subscribe().unwrap();
+    ec.enable_storage().unwrap();
+
     init_error_hooks()?;
     let terminal = init_terminal()?;
 
@@ -256,6 +260,7 @@ impl App {
 
                     if let Err(err) = ui_room.init_timeline_with_builder(builder).await {
                         error!("error when creating default timeline: {err}");
+                        continue;
                     }
 
                     // Save the timeline in the cache.