fix(engine): force full board repaint when the decor-view poller fires (#130)

The #152 poller fixes resolution + layout on a missed fold/unfold, but
a transient clip could survive if card sprites held stale visuals after
geometry converged. Emit StateChangedEvent alongside the synthetic
WindowResized so card_plugin re-renders every sprite from scratch —
silent self-heal, no player-facing prompt.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

solitaire_engine/src/safe_area.rs

@@ -82,7 +82,8 @@ impl Plugin for SafeAreaInsetsPlugin {
             );
 
         #[cfg(target_os = "android")]
-        app.init_resource::<android::SafeAreaPollTries>()
+        app.add_message::<crate::events::StateChangedEvent>()
+            .init_resource::<android::SafeAreaPollTries>()
             .add_systems(Update, android::refresh_insets)
             .add_systems(Update, android::rearm_on_resumed)
             .add_systems(Update, android::refresh_surface_size);
@@ -330,11 +331,16 @@ mod android {
     ///    `on_window_resized` in `table_plugin` recomputes the board layout,
     /// 3. re-arms the inset poller, because a screen change almost always
     ///    moves the system bars too — covering the "re-poll never fires"
-    ///    hole left open in #116.
+    ///    hole left open in #116,
+    /// 4. emits `StateChangedEvent` so `card_plugin`'s sync pipeline
+    ///    re-renders every card sprite from scratch — belt-and-braces for
+    ///    the transient tableau clip of #130, where geometry converged but
+    ///    stale card visuals survived the relayout.
     pub(super) fn refresh_surface_size(
         mut frame: Local<u32>,
         mut windows: Query<(Entity, &mut Window)>,
         mut resize_events: MessageWriter<WindowResized>,
+        mut state_events: MessageWriter<crate::events::StateChangedEvent>,
         mut poll: ResMut<SafeAreaPollTries>,
     ) {
         const POLL_INTERVAL_FRAMES: u32 = 30; // ~0.5 s @ 60 fps
@@ -381,6 +387,7 @@ mod android {
             width: decor_w as f32 / scale,
             height: decor_h as f32 / scale,
         });
+        state_events.write(crate::events::StateChangedEvent);
         poll.0 = 0;
     }