setup: load Bootstrap Icons font so icons render in the wizard

Both run() and run_new() were starting with Task::none(), so the
Bootstrap font was never loaded. All icon() calls in the setup wizard
rendered as '?' glyphs. Load the font as the initial task (batched
with AutoDownload where needed) and handle FontLoaded as a no-op.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/setup.rs

@@ -41,6 +41,7 @@ pub enum Message {
     LaunchNow,
     Close,
     ToggleLog,
+    FontLoaded,
 }
 
 #[derive(Debug, Clone)]
@@ -392,6 +393,7 @@ fn update(state: &mut State, message: Message) -> Task<Message> {
             iced::exit()
         }
         Message::Close => iced::exit(),
+        Message::FontLoaded => Task::none(),
     }
 }
 
@@ -871,10 +873,12 @@ pub fn run(config: &Config, launcher: &Launcher) -> Result<()> {
             if has_url {
                 state.source = launcher.installer_url.unwrap_or_default();
             }
+            let load_font = iced::font::load(std::borrow::Cow::Borrowed(iced_fonts::BOOTSTRAP_FONT_BYTES))
+                .map(|_| Message::FontLoaded);
             let init_task = if has_url {
-                Task::done(Message::AutoDownload)
+                Task::batch([load_font, Task::done(Message::AutoDownload)])
             } else {
-                Task::none()
+                load_font
             };
             (state, init_task)
         })
@@ -891,7 +895,11 @@ pub fn run_new(config: &Config) -> Result<()> {
             resizable: false,
             ..Default::default()
         })
-        .run_with(move || (State::new_picking(config.clone()), Task::none()))
+        .run_with(move || {
+            let load_font = iced::font::load(std::borrow::Cow::Borrowed(iced_fonts::BOOTSTRAP_FONT_BYTES))
+                .map(|_| Message::FontLoaded);
+            (State::new_picking(config.clone()), load_font)
+        })
         .map_err(|e| anyhow::anyhow!("iced: {e}"))
 }