UI: a setup checklist at the top of the browser

Once a model has geometry or a mesh, the browser shows the analysis stages from the engine's
checklist, each ticked, next, dashed (optional) or open; a click starts the stage's command and a
blocked stage's hover says what it waits for. The × hides it and View › Setup checklist shows it
again; the choice is kept in the per-user prefs.json.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UhhZMBTviDQxZvwnyP89fo

crates/ui-egui/src/browser.rs

@@ -334,6 +334,7 @@ pub fn browser(app: &mut ModelApp, ui: &mut egui::Ui) {
         .frame(egui::Frame::NONE.fill(t.panel).inner_margin(egui::Margin::symmetric(6, 6)))
         .show(ui, |ui| {
             app.place("browser", ui.max_rect());
+            crate::setup::card(app, ui);
             ui.label(RichText::new("BROWSER").font(crate::theme::label_font(ui.ctx(), 10.5)).color(t.text_dim));
             ui.add_space(4.0);
             egui::ScrollArea::vertical().id_salt("fc_browser_scroll").auto_shrink([false, false]).show(ui, |ui| {