feat(engine): 改进 Rust 纹理管理器

- 支持任意 ID 的纹理加载（非递增）
- 添加纹理状态追踪 API
- 优化纹理缓存清理机制
- 更新 TypeScript 绑定

packages/engine/src/core/engine.rs

@@ -197,14 +197,6 @@ impl Engine {
         colors: &[u32],
         material_ids: &[u32],
     ) -> Result<()> {
-        // Debug: log once
-        use std::sync::atomic::{AtomicBool, Ordering};
-        static LOGGED: AtomicBool = AtomicBool::new(false);
-        if !LOGGED.swap(true, Ordering::Relaxed) {
-            let sprite_count = texture_ids.len();
-            log::info!("Engine submit_sprite_batch: {} sprites, texture_ids: {:?}", sprite_count, texture_ids);
-        }
-
         self.renderer.submit_batch(
             transforms,
             texture_ids,
@@ -382,6 +374,24 @@ impl Engine {
         self.texture_manager.clear_all();
     }
 
+    /// 获取纹理加载状态
+    /// Get texture loading state
+    pub fn get_texture_state(&self, id: u32) -> crate::renderer::texture::TextureState {
+        self.texture_manager.get_texture_state(id)
+    }
+
+    /// 检查纹理是否已就绪
+    /// Check if texture is ready to use
+    pub fn is_texture_ready(&self, id: u32) -> bool {
+        self.texture_manager.is_texture_ready(id)
+    }
+
+    /// 获取正在加载中的纹理数量
+    /// Get the number of textures currently loading
+    pub fn get_texture_loading_count(&self) -> u32 {
+        self.texture_manager.get_loading_count()
+    }
+
     /// Check if a key is currently pressed.
     /// 检查某个键是否当前被按下。
     pub fn is_key_down(&self, key_code: &str) -> bool {