Updated the documents for KVcache with aoti support

Author: geoffreyQiu

corelib/recsys_kvcache_manager/README.md

@@ -50,6 +50,11 @@ Furthermore, the `NativeHostKVCacheManager` backend supports layerwise KV data o
 `HostKVStorageManagerBase` is provided as an interface for other LLM-compatible KV-cache systems for host memory, storage, and remote data pools.
 This can be extended to integrate other KV-cache systems. Currently, we provide integration with [`FlexKV`](https://github.com/taco-project/FlexKV/tree/main) as the lower-tier KV storage backend.
 
+- **[NEW] Compatible with Torch Export and AOTI**: 
+Recsys KVCache Manager now includes an export-compatible backend for KV-cache lookup, allocation, onboarding, offloading, and eviction when using the paged GPU KV cache together with the FlexKV host cache backend.
+The export path keeps the Python API unchanged, but routes KV-cache operations through tensor-only torch custom ops while keeping stateful cache policy and runtime management in C++, which makes the flow compatible with `torch.export` and AOTInductor/AOTI packaging. The current implementation is dependent on a [customized FlexKV version](https://github.com/geoffreyQiu/FlexKV/tree/cpp_client).
+
+
 
 ## Installation