client/common: support new login screen

client/src/imp/web.rs

@@ -1,4 +1,4 @@
-use crate::app::{Command, SharedState};
+use crate::app::{Command, ConnectTarget, SharedState};
 use crate::effects::{AudioProcessor, AudioProcessorSender, TransmitState};
 use color_eyre::eyre::{bail, eyre, Error};
 use crossbeam::atomic::AtomicCell;
@@ -108,13 +108,19 @@ impl super::PlatformInterface for WebPlatform {
     }
 
     async fn network_connect(
-        address: String,
+        target: ConnectTarget,
         username: String,
         event_rx: &mut UnboundedReceiver<Command>,
         overrides: &ProxyOverrides,
         state: SharedState,
     ) -> Result<(), Error> {
-        network_connect(address, username, event_rx, overrides, state).await
+        let url = match target {
+            ConnectTarget::Proxy(url) => url,
+            ConnectTarget::Direct { .. } => {
+                bail!("web platform requires a proxy URL, not a direct host:port")
+            }
+        };
+        network_connect(url, username, event_rx, overrides, state).await
     }
 
     async fn get_status(