三维未激活采样显示灰点，二维增加深度叠箭头。

分析对话框默认使用传感器对话框保存的标定，关闭按钮改为保存。框选曲线时数值卡片仍显示光标读数。相关单测通过。

apps/studio/tests/test_ui_smoke.py

@@ -1741,7 +1741,12 @@ def test_the_replay_view_loads_a_recording_and_scrubs_it(make_window, replay_rec
     assert panel.mode() == "follow"
     assert window.toolbar.run_role() == "acquire", "the rail kept the transport"
     assert window.toolbar.btn_run.text() == t("toolbar.run_label")
-    assert window.arrow_panel.view_modes() == ("arrows_pure", "arrows_stitched", "depth")
+    assert window.arrow_panel.view_modes() == (
+        "arrows_pure",
+        "arrows_stitched",
+        "depth",
+        "depth_arrows",
+    )
     assert "raw_0001" not in window.toolbar.source_summary.text(), (
         "the replay's video is still named in the live view"
     )
@@ -2747,14 +2752,15 @@ def test_a_recording_without_a_video_says_it_cannot_be_played(make_window, recor
 # ------------------------------------------- selection readout and notices
 
 
-def test_a_selection_moves_its_statistics_onto_the_value_cards(make_window):
-    """The per-channel line under the charts did not fit; the cards hold it now.
+def test_a_zoomed_window_keeps_the_cursor_on_the_value_cards(make_window):
+    """Zooming names the window in the strip; the cards stay on the playhead.
 
-    Selecting a window makes the big number that window's peak and the line under
-    it its mean · σ. The strip keeps only how big the selection is, and leaving
-    the selection puts the cursor readout back.
+    Selecting a window used to put that window's peak and mean · σ on the cards.
+    The big numbers are the sample under the cursor again; the strip keeps only
+    how big the selection is.
     """
     from orisys_app_shared.i18n import t
+    from orisys_studio.ui.force_plots import format_force
 
     window, stuck = _running_window(make_window)
     window.toolbar.units_combo.setCurrentIndex(0)  # newton
@@ -2768,6 +2774,7 @@ def test_a_selection_moves_its_statistics_onto_the_value_cards(make_window):
     assert plots.stats_label.text() == ""
     assert plots.value_details[0].text() == "", "a live reading carries a mean line"
 
+    plots.set_cursor(2.0)
     plots.set_window(1.0, 3.0)
     assert plots.mode() == "browse"
     assert plots._selection is not None, "the window was not read as a selection"
@@ -2777,17 +2784,17 @@ def test_a_selection_moves_its_statistics_onto_the_value_cards(make_window):
     assert t("chart.selection_summary", duration="1", samples=2)[:4] in summary or (
         "选区" in summary or "Selection" in summary
     ), summary
-    # The numbers a reader cannot fit in the strip are on the cards instead.
-    expected_peak = float(plots._selection.peaks[0])
-    expected = f"{expected_peak:.2f}"
-    assert plots.value_labels[0].text() == expected, (
-        f"the FN card is not the selection's peak: {plots.value_labels[0].text()!r}"
+    assert "峰" not in summary and "均" not in summary, summary
+
+    expected = format_force(
+        plots._display_values[0], plots.unit(), presentation=plots.presentation
+    )
+    assert plots.value_labels[0].text() == expected, (
+        f"the FN card is not the cursor sample: {plots.value_labels[0].text()!r}"
+    )
+    assert plots.value_details[0].text() == "", (
+        f"the card still carries a mean line: {plots.value_details[0].text()!r}"
     )
-    detail = plots.value_details[0].text()
-    assert detail and detail != "", detail
-    assert f"{float(plots._selection.means[0]):.4g}" in detail, (detail, plots._selection.means[0])
-    assert "均" in detail or "mean" in detail, detail
-    assert plots.value_labels[0].toolTip(), "the peak is not explained anywhere"
 
     # "Whole session" is the default fit, so it is not a selection.
     plots.show_all()