style: apply current rustfmt to the tree

A newer rustfmt wraps over-long match arms and call expressions that the
version main was last formatted with left on one line. Pure formatting,
no semantic change — split out so the friends-list feature commits stay
focused on real changes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/interactive.rs

@@ -180,10 +180,7 @@ async fn preflight_if_needed(theme: &ColorfulTheme) {
             eprintln!();
             let Ok(choice) = Select::with_theme(theme)
                 .with_prompt("Last bandwidth test failed. Try again?")
-                .items([
-                    "Yes — retry now",
-                    "No — use the conservative default",
-                ])
+                .items(["Yes — retry now", "No — use the conservative default"])
                 .default(0)
                 .interact()
             else {
@@ -344,5 +341,9 @@ pub fn prompt_player() -> Result<Player> {
         .items(["mpv", "VLC"])
         .default(0)
         .interact()?;
-    Ok(if choice == 0 { Player::Mpv } else { Player::Vlc })
+    Ok(if choice == 0 {
+        Player::Mpv
+    } else {
+        Player::Vlc
+    })
 }