chore: establish development baseline

examples/unity_adapter_demo.rs

@@ -0,0 +1,49 @@
+use bat_adapters::unity::{Unity2021_3Adapter, UnityAdapterRegistry};
+use bat_adapters::unity::RawAssetBundle;
+use std::sync::Arc;
+
+fn main() {
+    println!("🎮 BlueArchiveToolkit - Unity 适配器演示");
+    println!("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
+
+    // 创建 Unity Adapter
+    let adapter = Unity2021_3Adapter::new();
+    println!("✅ Unity Adapter: {}", adapter.name());
+    println!("   支持版本: 2021.3.0 - 2021.3.99");
+
+    // 模拟 UnityFS 文件头
+    println!("\n📦 测试 Unity 版本检测...");
+    let mut bundle_data = Vec::new();
+    bundle_data.extend_from_slice(b"UnityFS\0");
+    bundle_data.extend_from_slice(&[0, 0, 0, 8]);
+    bundle_data.extend_from_slice(b"5.x.x\02021.3.56f2\0");
+
+    let bundle = RawAssetBundle {
+        data: bundle_data,
+        path: Some("test.bundle".to_string()),
+    };
+
+    if adapter.can_handle(&bundle) {
+        println!("  ✅ 可以处理 Unity 2021.3.56f2");
+    } else {
+        println!("  ❌ 不支持此版本");
+    }
+
+    // 测试 Registry
+    println!("\n🔄 测试 Adapter Registry...");
+    let mut registry = UnityAdapterRegistry::new();
+    registry.register(Arc::new(Unity2021_3Adapter::new()));
+    println!("  注册的适配器数量: {}", registry.count());
+
+    match registry.select_adapter(&bundle) {
+        Ok(selected) => {
+            println!("  ✅ 自动选择的适配器: {}", selected.name());
+        }
+        Err(e) => {
+            println!("  ❌ 选择失败: {}", e);
+        }
+    }
+
+    println!("\n✅ 演示完成！");
+    println!("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
+}