test: clean up concurrent cooldown processes

tests/test_community_cli.py

@@ -137,24 +137,28 @@ def test_check_and_reserve_atomic_under_concurrent_access(tmp_path: Path) -> Non
     import multiprocessing
 
     state_file = tmp_path / "concurrent.json"
-    results = multiprocessing.Manager().list()
+    # Explicitly shut down the manager and never leak a timed-out child.
+    with multiprocessing.Manager() as manager:
+        results = manager.list()
+        processes = []
+        for i in range(3):
+            args = (i, str(state_file), results)
+            p = multiprocessing.Process(target=_try_reserve_for_test, args=(args,))
+            processes.append(p)
+        for p in processes:
+            p.start()
+        for p in processes:
+            p.join(timeout=10)
+        for p in processes:
+            if p.is_alive():
+                p.terminate()
+                p.join(timeout=2)
 
-    # Launch 3 processes simultaneously
-    processes = []
-    for i in range(3):
-        args = (i, str(state_file), results)
-        p = multiprocessing.Process(target=_try_reserve_for_test, args=(args,))
-        processes.append(p)
-    for p in processes:
-        p.start()
-    for p in processes:
-        p.join(timeout=10)
-
-    # At most one should succeed
-    ok_count = sum(1 for _, r in results if r == "ok")
-    assert ok_count == 1, f"Expected exactly 1 ok, got {ok_count}: {results}"
-    denied_count = sum(1 for _, r in results if "cooldown" in r)
-    assert denied_count == 2, f"Expected 2 denied, got {denied_count}: {results}"
+        # At most one should succeed
+        ok_count = sum(1 for _, r in results if r == "ok")
+        assert ok_count == 1, f"Expected exactly 1 ok, got {ok_count}: {results}"
+        denied_count = sum(1 for _, r in results if "cooldown" in r)
+        assert denied_count == 2, f"Expected 2 denied, got {denied_count}: {results}"
 
 
 # A03: Manual redirect control tests