fix(engine): prevent stock-tap from toggling HUD on Android

Every draw-from-stock tap was also firing the HUD auto-hide toggle
because the stock pile is not an ActionButton and toggle_hud_on_tap
had no way to know the tap was consumed by game logic.

Add GameInputConsumedResource(bool): handle_touch_stock_tap sets it
on TouchPhase::Started when a draw fires; toggle_hud_on_tap checks
and clears it on TouchPhase::Ended, treating it as equivalent to
started_on_button so the HUD stays put.

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

solitaire_engine/src/resources.rs

@@ -114,6 +114,13 @@ pub struct HintCycleIndex(pub usize);
 #[derive(Resource, Debug, Clone, Default)]
 pub struct SettingsScrollPos(pub f32);
 
+/// Set to `true` by an input system when a touch tap is consumed by game logic
+/// (e.g. drawing from stock). `toggle_hud_on_tap` checks this flag on
+/// `TouchPhase::Ended` and skips the HUD visibility toggle when set, then
+/// resets it to `false` so subsequent taps behave normally.
+#[derive(Resource, Debug, Clone, Default)]
+pub struct GameInputConsumedResource(pub bool);
+
 /// Shared Tokio runtime used by all async-task closures that need HTTP I/O.
 ///
 /// Bevy's `AsyncComputeTaskPool` uses `async-executor` (not Tokio), so spawned