Clean central topic on playbook XMind: remove cluttered root markers.

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

scripts/build_playbook_xmind.py

@@ -511,14 +511,14 @@ def build_content() -> list:
                 label="纪律",
             ),
         ],
-        markers=["other-people", "star-dark-blue"],
+        # 中心主题保持干净：不加图标/标签/备注，避免绿人、黄便签等杂乱标识
-        labels=["商务版"],
+        markers=None,
+        labels=None,
         fill=C_ROOT,
         color=C_TEXT,
         font_size="20pt",
         bold=True,
         line=C_ROOT,
-        notes="个人交易执行体系 · 向右逻辑图 · 商务标识版\n来源：交易执行手册 v2 + 交易行为准则-开单三检",
     )
     root["structureClass"] = "org.xmind.ui.logic.right"