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_live_calibration_dialog.py

@@ -6,11 +6,13 @@ import json
 from pathlib import Path
 
 import pytest
+from orisys_app_shared.analysis.bare_video import VideoFacts
 from orisys_app_shared.i18n import t
 from orisys_app_shared.sensors import scan_sensor_catalog
 from orisys_studio.ui import sensor_picker as picker_module
 from orisys_studio.ui.sensor_dialog import ROLE_DEFAULT, ROLE_FILE, ROLE_NONE, SensorDialog
 from orisys_studio.ui.sensor_picker import SensorPickerWidget
+from orisys_studio.ui.video_analysis_dialog import VideoAnalysisDialog
 from PySide6.QtWidgets import QWidget
 
 CONFIG = {
@@ -319,3 +321,71 @@ def test_apply_while_running_queues_set_pending_calibration(make_window, tmp_pat
     window.apply_live_calibration_choice()
     assert pending == []
     assert window.statusBar().currentMessage() == t("sensor.live_calibration_remembered")
+
+
+def _facts(path: Path) -> VideoFacts:
+    return VideoFacts(path=path, frame_count=4, fps=10.0, width=8, height=8)
+
+
+def test_analysis_prompt_defaults_to_the_saved_sensor_file(make_window, tmp_path):
+    """The file saved from the sensor dialog is the analysis prompt's starting choice."""
+    window = make_window()
+    entry = window.sensor_picker.selected_entry()
+    assert entry is not None
+    assert window.live_calibration_for(entry.ref) is None
+    cal = tmp_path / "picked.json"
+    cal.write_text("{}", encoding="utf-8")
+    window.set_live_calibration_choice(role=ROLE_FILE, path=cal)
+    dialog = VideoAnalysisDialog(
+        video=tmp_path / "clip.mp4",
+        facts=_facts(tmp_path / "clip.mp4"),
+        catalog=scan_sensor_catalog(),
+        window=window,
+        initial_profile=entry.ref,
+        remembered_calibration=window.live_calibration_for,
+    )
+    try:
+        assert dialog.calibration_combo.currentData() == ROLE_FILE
+        assert dialog._chosen_calibration() == cal
+    finally:
+        dialog.deleteLater()
+
+
+def test_analysis_prompt_keeps_its_default_until_a_choice_is_saved(
+    make_window, tmp_path
+):
+    window = make_window()
+    dialog = VideoAnalysisDialog(
+        video=tmp_path / "clip.mp4",
+        facts=_facts(tmp_path / "clip.mp4"),
+        catalog=scan_sensor_catalog(),
+        window=window,
+        initial_profile="shipped/box",
+        remembered_calibration=window.live_calibration_for,
+    )
+    try:
+        assert dialog.calibration_combo.currentData() == ROLE_DEFAULT
+    finally:
+        dialog.deleteLater()
+
+
+def test_a_reopened_analysis_setup_still_beats_the_saved_file(make_window, tmp_path):
+    window = make_window()
+    entry = window.sensor_picker.selected_entry()
+    assert entry is not None
+    cal = tmp_path / "picked.json"
+    cal.write_text("{}", encoding="utf-8")
+    window.set_live_calibration_choice(role=ROLE_FILE, path=cal)
+    dialog = VideoAnalysisDialog(
+        video=tmp_path / "clip.mp4",
+        facts=_facts(tmp_path / "clip.mp4"),
+        catalog=scan_sensor_catalog(),
+        window=window,
+        initial_profile=entry.ref,
+        prefer_no_calibration=True,
+        remembered_calibration=window.live_calibration_for,
+    )
+    try:
+        assert dialog.calibration_combo.currentData() == ROLE_NONE
+    finally:
+        dialog.deleteLater()