加一行布局实测日志（root/按钮表/日志Label 高度），用于定位'底部空一条'的原因

viewpanel/src/com/spineview/ObjectPanel.java

@@ -237,6 +237,10 @@ public final class ObjectPanel {
           float logH = 400f;
           call(logCell, "I", new Class<?>[] {float.class}, cellClass, Float.valueOf(logH));
           call(state.root, "b_", new Class<?>[0], void.class);
+          Thread.sleep(800);
+          System.err.println("[panel] 实测高度: root=" + floatOf(state.root, "init")
+              + " buttonsTable=" + floatOf(state.buttons, "init")
+              + " logLabel=" + floatOf(state.status, "init"));
           System.err.println("[panel] 面板高度(自动): stage=" + stageH + " -> " + panelH
               + "；三段 = " + buttonsH + " / " + middleH + " / " + logH);
         } catch (Throwable error) {