J1: the cliff tunnel (seam, six propped stretches, dark, lights), travel Valley <-> Cove through the sea cave, a save file per worldlet; New World has no Where (--dev-worldlets to try others)

scripts/world/sea_cave_spot.gd

@@ -0,0 +1,10 @@
+extends StaticBody3D
+## The sea cave's opening (sea_cave.gd): what you look at and press E on.
+
+var cave: Node3D
+
+func interact_prompt(player: Node) -> String:
+	return cave.interact_prompt(player)
+
+func interact(player: Node) -> void:
+	cave.interact(player)