status bar display

kiln-core/src/game.rs

@@ -66,6 +66,14 @@ pub struct GameState {
     /// by [`enter_board`](GameState::enter_board). Front-ends tick this down and
     /// may block input or show a visual effect while it is `Some(t)` where `t > 0`.
     pub board_transition: Option<f64>,
+    /// The player's current health. Game-global (not per-board), so it persists
+    /// across board transitions. Players start with `5`. There is no runtime
+    /// mutation path yet — front-ends only display it.
+    pub player_health: u32,
+    /// The number of gems the player has collected. Game-global like
+    /// [`player_health`](GameState::player_health); starts at `0` and is
+    /// display-only for now.
+    pub player_gems: u32,
 }
 
 impl GameState {
@@ -92,6 +100,8 @@ impl GameState {
             speech_bubbles: Vec::new(),
             active_scroll: None,
             board_transition: None,
+            player_health: 5,
+            player_gems: 0,
         };
         state.drain_errors();
         state