diff --git a/workspace/tests/test_runtime_wedge.py b/workspace/tests/test_runtime_wedge.py
index e9cdbd20..0183d788 100644
--- a/workspace/tests/test_runtime_wedge.py
+++ b/workspace/tests/test_runtime_wedge.py
@@ -5,21 +5,15 @@ to its template repo without breaking heartbeat.
 
 The behavior is identical to the prior in-executor implementation; tests
 pin the contract so the re-export shim in claude_sdk_executor.py can
-later be deleted without surprise."""
-import pytest
+later be deleted without surprise.
 
+Cross-test isolation is provided by the autouse
+`_reset_runtime_wedge_between_tests` fixture in workspace/tests/conftest.py
+— this file does not need a local reset fixture.
+"""
 import runtime_wedge
 
 
-@pytest.fixture(autouse=True)
-def _reset():
-    """Each test starts with a clean wedge state — production wedges are
-    sticky-per-process, but cross-test bleed would couple unrelated cases."""
-    runtime_wedge.reset_for_test()
-    yield
-    runtime_wedge.reset_for_test()
-
-
 class TestRuntimeWedge:
     def test_starts_unwedged(self):
         assert runtime_wedge.is_wedged() is False