Save The Tree implementation and acceptance work in progress

Preserve production code, regression fixtures, audio assets and provenance, test infrastructure, and the original-completion plan and progress ledger. Final game and Windows acceptance remain pending; excluded local artifacts and native experiments are not part of this snapshot.

tests/s3/test_runtime_actor_hardening.gd

@@ -220,7 +220,7 @@ func _test_unreachable_staff_task_is_not_assigned() -> void:
 
 func _test_shift_end_interrupts_and_fails_service() -> void:
 	_reset_runtime(3314)
-	var facility: FacilityInstance = _build_cafeteria()
+	var facility: FacilityInstance = _build_cafeteria(true)
 	if facility == null:
 		return
 	for staff_id: StringName in [&"short_cook", &"short_server"]:
@@ -356,7 +356,7 @@ func _test_corrupt_cross_domain_snapshots_are_atomic() -> void:
 	_expect(SimulationDigest.compute(_runtime.create_snapshot()) == before_digest, "dangling-Reservation rejection preserves the live digest")
 
 
-func _build_cafeteria() -> FacilityInstance:
+func _build_cafeteria(physical_kitchen_staff: bool = false) -> FacilityInstance:
 	var build = _runtime.submit_command(
 		&"build_facility",
 		{&"definition_id": &"cafeteria", &"origin": Vector3i(-5, 0, WorldService.LAYER_FRONT)},
@@ -371,6 +371,9 @@ func _build_cafeteria() -> FacilityInstance:
 	var facility_id := StringName(facilities[0].get(&"instance_id", ""))
 	var facility: FacilityInstance = _runtime.facility_service.get_instance(facility_id)
 	_expect(facility != null, "completed cafeteria registers with FacilityService")
+	if facility != null:
+		var kitchen_setup: Dictionary = load("res://tests/fixtures/required_kitchen_setup.gd").ensure(_runtime, _clock, facility.instance_id, physical_kitchen_staff)
+		_expect(bool(kitchen_setup.get(&"ok", false)), "public paid kitchen link uses scenario-selected physical or logical attendance")
 	return facility