[Model] Add native MAGI-2 Preview diffusion support (#5918)

Signed-off-by: Hongsheng Liu <liuhongsheng4@huawei.com>
Signed-off-by: hsliuustc0106 <liuhongsheng4@huawei.com>

vllm_omni/diffusion/cache/cachedit/__init__.py

@@ -1,11 +1,12 @@
 # SPDX-License-Identifier: Apache-2.0
-# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM-Omni project
 
 """Public API for the Cache-DiT diffusion cache backend."""
 
 from vllm_omni.diffusion.cache.cachedit.backend import (
     CUSTOM_DIT_ENABLERS,
     CacheDiTBackend,
+    CacheDiTEnableResult,
     cache_summary,
     enable_cache_for_dit,
 )
@@ -32,6 +33,7 @@ __all__ = [
     "CUSTOM_DIT_ENABLERS",
     "CacheDiTAdapterConfig",
     "CacheDiTBackend",
+    "CacheDiTEnableResult",
     "CacheDiTConfig",
     "CacheDiTRequestSpec",
     "RequestScopedCacheDiTRuntime",