fix: honor live scheduling revisions at dispatch

tests/wf_server/test_cli.py

@@ -494,7 +494,7 @@ def test_rpc_server_cli_enable_scheduler_with_store_root_builds_app(
     assert result.exit_code == 0, result.output
     assert captured["server"] is not None
     assert captured["app"] is not None
-    assert captured["lifespan"] is not None
+    assert callable(captured["lifespan"])
 
 
 def test_rpc_server_cli_config_scheduler_section_enables_without_flag(
@@ -528,7 +528,7 @@ def test_rpc_server_cli_config_scheduler_section_enables_without_flag(
     result = CliRunner().invoke(app, ["--config", str(config_path)])
 
     assert result.exit_code == 0, result.output
-    assert captured["lifespan"] is not None
+    assert callable(captured["lifespan"])
 
 
 def test_rpc_server_cli_flag_overrides_disabled_config_scheduler(

tests/wf_server/test_scheduler_composition.py

@@ -18,6 +18,7 @@ from wf_server.scheduling import (
     scheduler_lifespan,
     server_scheduler_config,
 )
+from wf_transport_rpc_http import create_rpc_app
 
 
 def test_server_scheduler_config_disabled_by_default() -> None:
@@ -147,3 +148,25 @@ async def test_scheduler_lifespan_releases_lock_on_exit(tmp_path: Path) -> None:
         assert probe.held is True
     finally:
         probe.release()
+
+
+async def test_rpc_scheduler_lifespan_factory_starts_and_stops_service(
+    tmp_path: Path,
+) -> None:
+    """The RPC app receives a callable that lazily owns scheduler startup."""
+    server = build_local_static_workflow_server(tmp_path)
+    config = SchedulerServiceConfig(auto_tick=False)
+    app = create_rpc_app(
+        server,
+        lifespan=lambda _app: scheduler_lifespan(server, config),
+    )
+
+    async with app.router.lifespan_context(app):
+        assert server.api.schedules._schedule_store().root == tmp_path
+
+    probe = SchedulerOwnership(tmp_path, owner="probe")
+    probe.acquire()
+    try:
+        assert probe.held is True
+    finally:
+        probe.release()