完善客户端功能并同步差距文档

project/world_probe.gd

@@ -21,9 +21,10 @@ func _init() -> void:
 		print("  ", k, " = ", rep[k])
 
 	var terr: int = 0
-	for c in w.get_children():
-		if String(c.name).begins_with("Terrain_"):
-			terr += 1
+	# Terrain_* now lives below Chunk_* roots so unloading can free a whole
+	# streamed chunk. Count recursively; direct-child counting reports a false 0.
+	for c in w.find_children("Terrain_*", "MeshInstance3D", true, false):
+		terr += 1
 	print("terrain MeshInstance3D children: ", terr)
 
 	var h1: float = w.call("sample_height", 128.0, 128.0)
@@ -33,7 +34,9 @@ func _init() -> void:
 	# 顶视正交截图（W2 与 minimap 对齐用）
 	_shot(w, rep)
 
-	var expect: int = int(rep["map_size_x"]) * int(rep["map_size_y"])
+	var expected_chunks: int = int(rep["map_size_x"]) * int(rep["map_size_y"])
+	var patch_side := maxi(1, int(w.get("terrain_patches")))
+	var expect: int = expected_chunks * patch_side * patch_side
 	var pass_ok: bool = ok and terr == expect and int(rep["chunks_failed"]) == 0 \
 		and h1 != 0.0 and h_out == 0.0
 	print("RESULT: ", "PASS" if pass_ok else "FAIL")