test: seed review workflow load and pass expected_head_sha in legacy test fixtures

tests/test_terminal_review_hard_stop.py

@@ -36,9 +36,12 @@ def _lock(mutations=None, correction=False):
 
 
 def _seed(mutations=None, correction=False):
+    import review_workflow_load
+    review_workflow_load.record_review_workflow_load(mcp_server.PROJECT_ROOT)
     mcp_server._save_review_decision_lock(_lock(mutations, correction))
 
 
+
 APPROVED_A = {"pr_number": 5, "action": "approve", "review_id": 1,
               "review_state": "approve"}
 RC_A = {"pr_number": 5, "action": "request_changes", "review_id": 2,
@@ -92,6 +95,8 @@ class TestTerminalHardStopReasons(unittest.TestCase):
 
 class TestMergeHardStopWiring(unittest.TestCase):
     def tearDown(self):
+        import review_workflow_load
+        review_workflow_load.clear_review_workflow_load()
         mcp_server._save_review_decision_lock(None)
 
     def test_merge_blocked_after_request_changes(self):
@@ -113,6 +118,8 @@ class TestMergeHardStopWiring(unittest.TestCase):
 
 class TestMarkFinalHardStopWiring(unittest.TestCase):
     def tearDown(self):
+        import review_workflow_load
+        review_workflow_load.clear_review_workflow_load()
         mcp_server._save_review_decision_lock(None)
 
     def test_mark_ready_blocked_after_terminal_mutation(self):
@@ -145,6 +152,8 @@ def _mark(action, pr_number=6, **kwargs):
 
 class TestDuplicateRequestChangesSuppression(unittest.TestCase):
     def tearDown(self):
+        import review_workflow_load
+        review_workflow_load.clear_review_workflow_load()
         mcp_server._save_review_decision_lock(None)
 
     def test_duplicate_request_changes_blocked_at_same_head(self):