zh locale: take ui/windows images from Longju

The character window's tabs and stat labels (VIT/INT/Character Status,
Status/Abilities/...) are baked into locale/<xx>/ui/windows/windows.dds;
the zh build only overlaid text keys, so they stayed English. The folder
is now replaced as a whole (its .sub files index its own atlas).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/build_zh_locale.py

@@ -28,6 +28,9 @@ LOCALE_CFG = "10002 936 zh\n"
 DEFAULT_NAMES = REPO / "data/zh_40250"
 FORMAT = re.compile(r"%(?:\([^)]*\))?[-+#0 ]*\d*(?:\.\d+)?[diouxXeEfFgGcrs%]")
 KEYED_FILES = ("locale_game.txt", "locale_interface.txt")
+# Image folders whose labels are drawn text (the character window's tabs and stat labels). Each is taken
+# from Longju as a whole: its .sub files carry their own coordinates into the folder's atlas.
+IMAGE_DIRS = ("ui/windows",)
 
 
 def keyed_lines(path: Path, encoding: str):
@@ -166,6 +169,15 @@ def build(en: Path, zh: Path, output: Path, client_base: Path,
         if (zh / filename).is_file():
             shutil.copyfile(zh / filename, locale_dir / filename)
 
+    for folder in IMAGE_DIRS:
+        english_files = {path.name for path in (en / folder).iterdir()}
+        chinese_files = {path.name for path in (zh / folder).iterdir()}
+        if not english_files <= chinese_files:
+            raise ValueError(f"{folder}: Longju lacks {sorted(english_files - chinese_files)}")
+        for name in sorted(english_files):
+            shutil.copyfile(zh / folder / name, locale_dir / folder / name)
+        report["files"][folder] = {"replaced_images": len(english_files)}
+
     if proto_tool is not None:
         if not proto_tool.is_file() or names_dir is None:
             raise ValueError("build locale_proto_patch and provide the Chinese name tables")