为二维与三维深度色标增加每帧自适应选项。

默认仍锁定本会话首帧，勾选后两视图按当前帧有效深度共用同一范围。已用深度色标与显示设置测试验证。

apps/studio/tests/test_scene3d_pane_ui.py

@@ -57,6 +57,7 @@ def test_the_pane_holds_a_legend_and_no_settings(panel):
         panel.deform_check,
         panel.gain_spin,
         panel.scale_combo,
+        panel.depth_adaptive_check,
         panel.fps_combo,
         panel.reset_button,
     ):
@@ -89,10 +90,22 @@ def test_the_settings_dialog_hosts_the_panes_own_controls(panel):
         assert not dialog.isVisible()
         assert panel.enable_check.text(), "closing the dialog destroyed its controls"
         assert panel.settings().max_fps == 30
+        assert panel.settings().depth_scale_adaptive is False
     finally:
         dialog.deleteLater()
 
 
+def test_adaptive_depth_scale_round_trips_through_the_dialog(panel):
+    """The per-frame colour bar is a saved setting, not a one-shot toggle."""
+    from orisys_app_shared.scene3d.contracts import DisplaySettings
+
+    panel.apply_settings(DisplaySettings(depth_scale_adaptive=True))
+    assert panel.depth_adaptive_check.isChecked()
+    assert panel.settings().depth_scale_adaptive is True
+    panel.apply_settings(DisplaySettings())
+    assert panel.settings().depth_scale_adaptive is False
+
+
 def test_the_pane_header_offers_the_two_actions(qt_app):
     """A gear and a view reset: the two things that belong to *looking*."""
     from orisys_studio.ui.mesh3d_panel import Mesh3dPanel