docs/test: align scheduling cleanup

tests/scheduling/test_lifecycle.py

@@ -265,8 +265,10 @@ async def test_settlement_does_not_block_the_event_loop(
         await service.start()
         service.schedule_store.create_schedule(_sched_model("a", intended))
         await service.poll_once(intended + timedelta(seconds=1))
-        await asyncio.sleep(0.05)
-        assert settlement_started.is_set()
+        # The worker releases itself after two seconds as failure-safe cleanup.
+        # Keep this bounded wait shorter than that timeout so the assertion
+        # observes the intentionally blocked settlement rather than its guard.
+        assert await asyncio.to_thread(settlement_started.wait, 1.0)
         assert not settlement_finished.is_set()
         assert service.live_executions == 1
         release.set()

tests/scheduling/test_lock_identity.py

@@ -100,7 +100,9 @@ def test_competing_processes_share_the_canonical_lock(tmp_path: Path) -> None:
     comp = tmp_path / "composition"
     comp.mkdir(parents=True)
     sched_store, run_store = _stores(comp)
-    identity = Path(canonical_lock_root(sched_store.root, run_store.root) or "")
+    resolved = canonical_lock_root(sched_store.root, run_store.root)
+    assert resolved is not None
+    identity = Path(resolved)
     holder = SchedulerOwnership(identity, owner="parent").acquire()
     try:
         script_path = tmp_path / "compete_canonical.py"

tests/scheduling/test_ownership.py

@@ -51,6 +51,7 @@ def test_competing_process_cannot_acquire_while_held(tmp_path: Path) -> None:
             capture_output=True,
             text=True,
             timeout=30,
+            cwd=Path(__file__).resolve().parents[2],
         )
         assert proc.returncode == 0, proc.stderr
         assert "second-owner-rejected" in proc.stdout
@@ -73,6 +74,7 @@ def test_lock_released_on_process_death(tmp_path: Path) -> None:
     )
     proc = subprocess.Popen(
         [sys.executable, str(script_path)],
+        cwd=Path(__file__).resolve().parents[2],
         stdout=subprocess.PIPE,
         text=True,
     )