chore: establish development baseline

adapters/src/unity.rs

@@ -0,0 +1,11 @@
+//! Unity 版本适配器模块
+//!
+//! 提供多个 Unity 版本的 AssetBundle 解析支持
+
+pub mod adapter;
+pub mod unity_2021_3;
+pub mod registry;
+
+pub use adapter::{UnityAdapter, VersionRange, RawAssetBundle, ParsedAssetBundle};
+pub use unity_2021_3::Unity2021_3Adapter;
+pub use registry::UnityAdapterRegistry;