fix: keep empty MCP init results

pyproject.toml

@@ -7,7 +7,7 @@ build-backend = "setuptools.build_meta"
 authors = [{ name = "chatos@alibaba" }]
 requires-python = "<4.0,>=3.10"
 name = "rl-rock"
-version = "1.10.0.dev20"
+version = "1.10.0.dev2026070901"
 description = "ROCK-Reinforcement Open Construction Kit"
 readme = "README.md"
 dependencies = [

rock/sdk/mcp/mcp_env.py

@@ -146,7 +146,7 @@ async def init(self, data: dict) -> dict:
             result = self.data_lifecycles[lifecycle_type].init(lifecycle_data)
             if inspect.isawaitable(result):
                 result = await result
-            if result is not None and result != {}:
+            if result is not None:
                 init_results[lifecycle_type] = result
         return init_results
 

tests/unit/sdk/mcp/test_mcp_env.py

@@ -104,6 +104,12 @@ def init(self, data: dict) -> dict:
         return {"initialized": False, "result": {}}
 
 
+class EmptyInitResultLifecycle(RecordingDataLifecycle):
+    def init(self, data: dict) -> dict:
+        super().init(data)
+        return {}
+
+
 class FakeSandboxAware:
     def set_sandbox(self, sandbox) -> None:
         self.sandbox = sandbox
@@ -715,6 +721,16 @@ def test_mcp_env_init_keeps_deferred_init_result(monkeypatch):
     assert result == {"slack": {"initialized": False, "result": {}}}
 
 
+def test_mcp_env_init_keeps_empty_lifecycle_result(monkeypatch):
+    mcp_env = reload_mcp_env(monkeypatch)
+    env = mcp_env.McpEnv(servers={"slack": slack_server_config()})
+    env.data_lifecycles["slack"] = EmptyInitResultLifecycle()
+
+    result = asyncio.run(env.init({"slack": {"reset": []}}))
+
+    assert result == {"slack": {}}
+
+
 def test_mcp_env_dump_awaits_async_lifecycle(monkeypatch):
     mcp_env = reload_mcp_env(monkeypatch)
     env = mcp_env.McpEnv(servers={"slack": slack_server_config()})