sched: server scheduler wiring, config section, transport lifespan, CLI flag (T12)

tests/wf_config/test_config_models.py

@@ -13,6 +13,7 @@ from wf_config import (
     McpSourceConfig,
     RpcHttpTargetConfig,
     RpcHttpTransportConfig,
+    SchedulerConfig,
     StdioSourceTransportConfig,
     StdlibSourceConfig,
     WorkflowConfigFile,
@@ -490,3 +491,50 @@ def test_workflow_config_parses_oauth_provider_profile() -> None:
         "access_type": "offline",
         "prompt": "consent",
     }
+
+
+def test_server_config_scheduler_absent_is_none() -> None:
+    config = WorkflowConfigFile.model_validate({"version": 1})
+
+    assert config.server.scheduler is None
+
+
+def test_server_config_parses_scheduler_section_with_values() -> None:
+    config = WorkflowConfigFile.model_validate(
+        {
+            "version": 1,
+            "server": {
+                "scheduler": {
+                    "enabled": True,
+                    "poll_interval_s": 2.5,
+                    "max_concurrent_runs": 8,
+                    "drain_grace_s": 60.0,
+                },
+            },
+        }
+    )
+
+    assert isinstance(config.server.scheduler, SchedulerConfig)
+    assert config.server.scheduler.enabled is True
+    assert config.server.scheduler.poll_interval_s == 2.5
+    assert config.server.scheduler.max_concurrent_runs == 8
+    assert config.server.scheduler.drain_grace_s == 60.0
+
+
+def test_server_config_scheduler_defaults_to_disabled() -> None:
+    config = WorkflowConfigFile.model_validate(
+        {"version": 1, "server": {"scheduler": {}}}
+    )
+
+    assert config.server.scheduler is not None
+    assert config.server.scheduler.enabled is False
+    assert config.server.scheduler.poll_interval_s == 1.0
+    assert config.server.scheduler.max_concurrent_runs == 4
+    assert config.server.scheduler.drain_grace_s == 30.0
+
+
+def test_server_config_rejects_unknown_scheduler_key() -> None:
+    with pytest.raises(ValidationError):
+        WorkflowConfigFile.model_validate(
+            {"version": 1, "server": {"scheduler": {"bogus_key": 1}}}
+        )