feat(ai): add wander AI system with move boost

Add AIBase and WanderAITag components, a WanderAISystem, and a MoveBoost component to control wandering behavior. Replace the old MoveState with MoveBoost and include a horizontal random direction helper.

include/Cubed/gameplay/ecs/ai_struct.hpp

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "Cubed/gameplay/game_time.hpp"
+namespace Cubed {
+struct AIBase {
+    TickType interval = 1;
+    TickType count = 0;
+};
+
+struct WanderAITag {};
+
+struct MoveBoost {
+    TickType duration = 0;
+    TickType count = 0;
+};
+
+} // namespace Cubed

include/Cubed/gameplay/ecs/server_entity.hpp

@@ -1,7 +1,6 @@
 #pragma once
 #include "Cubed/gameplay/ecs/health.hpp"
 #include "Cubed/gameplay/ecs/movement.hpp"
-#include "Cubed/gameplay/ecs/state.hpp"
 #include "Cubed/gameplay/ecs/transform.hpp"
 #include "Cubed/gameplay/hitbox.hpp"
 namespace Cubed {
@@ -13,8 +12,6 @@ struct BaseServerCreature {
 
     Movement movement{};
 
-    MoveState move_state{};
-
     Direction direction{};
 
     Gravity gravity{};

include/Cubed/gameplay/systems/wander_ai_system.hpp

@@ -0,0 +1,14 @@
+#pragma once
+#include "Cubed/gameplay/ecs/ai_struct.hpp"
+#include "Cubed/gameplay/ecs/server_entity.hpp"
+
+#include <entt/entt.hpp>
+namespace Cubed {
+class WanderAISystem {
+public:
+    static void update(entt::registry& registry);
+
+private:
+    static void do_ai(BaseServerCreature& creature, MoveBoost& move_boost);
+};
+} // namespace Cubed

include/Cubed/tools/cubed_random.hpp

@@ -1,4 +1,6 @@
 #pragma once
+#include "glm/ext/vector_float3.hpp"
+
 #include <random>
 namespace Cubed {
 
@@ -14,6 +16,8 @@ public:
     int random_int(int min, int max);
     float random_float(float min, float max);
 
+    glm::vec3 random_direction_horizontal();
+
 private:
     unsigned int m_seed = 0;
     std::mt19937 m_engine;