Fix Windows git commit ValueError: embedded null character.

Use git commit -F and strip NULs from argv/version strings (0.3.7).

Co-authored-by: Cursor <cursoragent@cursor.com>

export_1c_help.py

@@ -297,7 +297,9 @@ def cmd_push(args: argparse.Namespace) -> int:
 
     message = args.message or (
         f"export_1c_help v{__version__}: sync help cfg {stats.config_version} "
-        f"({stats.pages_written} pages, +{stats.created_count}/~{stats.edited_count}/-{stats.deleted_count})"
+        f"({stats.pages_written} pages, "
+        f"+{stats.created_count} ~{stats.edited_count} "
+        f"={stats.unchanged_count} -{stats.deleted_count})"
     )
     try:
         if not (work / ".git").exists():