story: DGR-033 Build a standalone fake C++ gRPC Shard worker

packages/node/native/CMakeLists.txt

@@ -62,6 +62,21 @@ message(STATUS "Pinned gRPC ${gRPC_VERSION}: building ShardRuntime service stubs
 
 enable_testing()
 
+# The standalone fake Shard worker (DGR-033): a real gRPC server over the
+# ShardRuntime service, backed by the model-free FakeShardEngine. It links the
+# grpc service stubs only — no llama.cpp, no graph-execution entry point.
+add_executable(shard_worker
+  worker/shard_worker_main.cpp
+  worker/shard_service.cpp)
+target_include_directories(shard_worker PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/worker")
+target_link_libraries(shard_worker PRIVATE shard_runtime_grpc gRPC::grpc++)
+
+# Pure-C++ CTest: the worker binds an ephemeral port, self-drives the full
+# lifecycle (capability, health, fragmented prefill, decode, release) over a
+# real loopback gRPC channel, and exits non-zero on any mismatch. This proves
+# the worker serves the contract without needing a Python environment.
+add_test(NAME shard_worker_selftest COMMAND shard_worker --selftest)
+
 add_executable(shard_protocol_conformance tests/test_shard_protocol_conformance.cpp)
 target_link_libraries(shard_protocol_conformance PRIVATE shard_runtime_proto)