v0.5.2

Что то сделал

scripts/fetch_graphviz.py

@@ -0,0 +1,44 @@
+"""Download official Graphviz win64 portable into md2gost/vendor/graphviz (for exe builds)."""
+
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+if str(ROOT) not in sys.path:
+    sys.path.insert(0, str(ROOT))
+
+from md2gost.dfd import (  # noqa: E402
+    GRAPHVIZ_VERSION,
+    GRAPHVIZ_ZIP_URL,
+    fetch_graphviz,
+    resolve_graphviz_engine,
+    strip_graphviz_tcl_libs,
+    vendor_graphviz_root,
+)
+
+
+def main() -> int:
+    dest = vendor_graphviz_root()
+    print(f"Graphviz {GRAPHVIZ_VERSION}: {GRAPHVIZ_ZIP_URL}")
+    print(f"Куда:     {dest}")
+    if resolve_graphviz_engine(False) and (dest / "bin").is_dir():
+        n = strip_graphviz_tcl_libs(dest)
+        hit = resolve_graphviz_engine(False)
+        extra = f", снял Tcl/Tk DLL Graphviz: {n}" if n else ""
+        print(f"Уже есть: {hit}{extra}")
+        return 0
+    if fetch_graphviz(dest):
+        hit = resolve_graphviz_engine(False)
+        print(f"Готово: {hit or dest}")
+        return 0
+    print(
+        "Не удалось скачать Graphviz "
+        "(exe соберётся; DFD пойдёт через kroki.io или системный PATH)."
+    )
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())