feat(management): ✨ Implement Rust-based turn processing and GDScript-Rust API extensions for optimized turn-based logic execution

Co-Authored-By: Lilith Autocommit <noreply@atlilith.com>

src/game/engine/src/modules/management/turn_processor.gd

@@ -276,7 +276,7 @@ func _apply_building_bonuses(city: CityScript, building_id: String) -> void:
 func _process_city_healing(player: RefCounted) -> void:
 	for city_ref: Variant in player.cities:
 		if city_ref is CityScript:
-			(city_ref as CityScript).heal_per_turn()
+			(city_ref as CityScript).heal_per_turn(GameState.turn_number)
 
 
 func _process_healing(player: RefCounted) -> void:  # Player

src/simulator/api-gdext/src/lib.rs

@@ -1251,10 +1251,18 @@ impl GdCity {
         self.inner.heal(amount.max(0) as u32);
     }
 
-    /// Heal the city by the standard per-turn amount (20 HP). Skips destroyed cities.
+    /// Heal the city by the standard per-turn amount (20 HP). Skips destroyed
+    /// cities and cities recently attacked (see mc_city::City::heal_per_turn).
     #[func]
-    fn heal_per_turn(&mut self) {
-        self.inner.heal_per_turn();
+    fn heal_per_turn(&mut self, current_turn: i64) {
+        self.inner.heal_per_turn(current_turn.max(0) as u32);
+    }
+
+    /// Mark the city as having taken combat damage on `turn`. Call when a
+    /// combat result assigns non-zero city damage.
+    #[func]
+    fn mark_attacked(&mut self, turn: i64) {
+        self.inner.mark_attacked(turn.max(0) as u32);
     }
 }