feat: add scattered discoverable resources

tests/jajce_world_scaffold_test.gd

@@ -113,8 +113,18 @@ func _run() -> void:
 		ids.append(String((resource as ResourceNode).node_id))
 	ids.sort()
 	_check(
-		ids == ["berry_bush_01", "berry_bush_02", "tree_01", "tree_02"],
-		"Jajce resources should preserve all stable IDs"
+		ids
+		== [
+			"animal_camp_01",
+			"berry_bush_01",
+			"berry_bush_02",
+			"berry_patch_river_01",
+			"tree_01",
+			"tree_02",
+			"tree_north_outskirts_01",
+			"tree_south_edge_01"
+		],
+		"Jajce resources should preserve all stable and discoverable IDs"
 	)
 	var metadata_valid := true
 	for resource in resources:
@@ -218,7 +228,7 @@ func _run() -> void:
 
 	if failures.is_empty():
 		print(
-			"[TEST] Jajce scaffold passed: Terrain3D, storage/activity sites, shader water"
+			"[TEST] Jajce scaffold passed: Terrain3D, scattered resources, typed sites"
 		)
 		quit(0)
 		return