Hall of the fallen: kills and causes of death, in the game and over all games in the profile

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/menu.rs

@@ -303,6 +303,7 @@ enum Btn {
     MatchChat,
     Bestiary,
     Achievements,
+    AchHall, // achievements page: switch to the hall of the fallen and back
     Tutorial,
     BestTab(usize),
     BestSel(i32),
@@ -454,6 +455,7 @@ pub struct Menu {
     scroll: usize,
     rows_visible: usize,
     pub profile: crate::achievements::Profile, // shown on the achievements page
+    ach_hall: bool,                             // the achievements page shows the hall of the fallen
     buttons: Vec<(Rect, Btn)>,
     lang_open: Option<Rect>,          // the language dropdown is open below/above this field
     lang_scroll: usize,               // first language shown in the open dropdown
@@ -497,6 +499,7 @@ impl Menu {
             focus: 0,
             error: None,
             match_ui: MatchUi::default(),
+            ach_hall: false,
             coop_mission: crate::campaign::coop_mission_indexes().first().copied().unwrap_or(0),
             match_size: 128,
             coop_editor: false,
@@ -939,6 +942,11 @@ impl Menu {
                 }
                 MenuAction::Consumed
             }
+            Some(Btn::AchHall) => {
+                self.ach_hall = !self.ach_hall;
+                self.scroll = 0;
+                MenuAction::Consumed
+            }
             Some(Btn::Achievements) => {
                 self.page = Some(Page::Achievements { from_title });
                 self.scroll = 0;