修复回放标定选择与曲线显示数据保留

让标定选择进入处理和缓存，避免显示设置清空曲线。102 项针对性检查通过，全量门禁仍有停止时序、模型尺寸与原生崩溃问题。

apps/studio/config/locales/en_US.json

@@ -360,6 +360,7 @@
     "device_family": "This calibration belongs to {family}, not Finger",
     "reference": "Reference frame",
     "reference_time": "{seconds} s",
+    "reference_missing": "The recording has no frame {frame}.",
     "blocked": "This profile cannot be used: {reason}"
   },
   "record": {

apps/studio/config/locales/zh_CN.json

@@ -360,6 +360,7 @@
     "device_family": "这份标定属于 {family}，不能用于 Finger",
     "reference": "参考帧",
     "reference_time": "{seconds} 秒",
+    "reference_missing": "录制中没有第 {frame} 帧。",
     "blocked": "这套配置不能用：{reason}"
   },
   "record": {

apps/studio/docs/replay-panel.md

@@ -1,9 +1,8 @@
 # Replay panel contract
 
-The replay panel plays one recording — or one video — against a single cursor. Each
-capability states its requirement, data source and a falsifying check. The result format and
-playback semantics are owned by Part A ([replay-analysis.md](replay-analysis.md)) and Part B
-([replay-analysis-part-b.md](replay-analysis-part-b.md)).
+The replay panel plays one recording or video against one cursor. Part A
+([replay-analysis.md](replay-analysis.md)) and Part B
+([replay-analysis-part-b.md](replay-analysis-part-b.md)) own format and playback semantics.
 
 Status: Parts A and B shipped at `cf49b08`, the depth channel at `9e20fd0`, the result-aware mode
 plan at `1aa4543`. The cache root and the lifetime sweep are implemented; the display-control
@@ -11,12 +10,10 @@ separation (Part C) is not.
 
 ## 1. Load a video
 
-Selecting a video always gives a playable timeline, and the panel says what the file is.
-`load_video` calls a folder holding `forces.csv` beside the video a recording; anything else
-opens as a bare video (`VideoOnlySource`) and plays, with `playback.video_only_opened` on the
-rail and `playback.video_only_notice` in the notes. A file that cannot be decoded is refused
-with its reason. What a bare video lacks is force rows *measured by a device*, and
-`session.json` metadata.
+`load_video` treats video beside `forces.csv` as a recording; otherwise it opens a bare video
+(`VideoOnlySource`), with `playback.video_only_opened` on the rail and
+`playback.video_only_notice` in the notes. Undecodable files are refused with their reason.
+Bare video lacks device-measured force rows and `session.json` metadata.
 
 **A bare video can be analysed, and is asked how.** The two files the pass reads are *generated*
 for the video in an app-owned workspace and every later step is the existing recording path; the
@@ -72,13 +69,13 @@ One cursor drives all three.
 
 | View | Data source |
 |---|---|
-| Charts | the recorded `forces.csv` (`RecordingCurveSource`), or — over a bare video — the result's own recomputed trace (`AnalysisCurveSource`) |
+| Charts | recorded `forces.csv` (`RecordingCurveSource`), or a recomputed trace for bare videos and reconfigured recordings (`AnalysisCurveSource`) |
 | 2D canvas | the cached per-frame samples and depth, drawn at display time |
 | 3D pane | the packet built from the cached frame (`AnalysisSession.packet` → `Scene3DView.submit_packet`) |
 
 The charts read one of two sources, and the header names which: `chart.mode_replay` for a
 recording's own `forces.csv` (*the* measurement — a device was in the loop) and
-`chart.mode_recomputed` for the trace the pass recomputed from a bare video
+`chart.mode_recomputed` for the recomputed trace
 (`FRAME_FLAG_FORCE`, 28 B/frame; `provenance.sources["forces"]` says which). With neither —
 nothing analysed yet, or a profile whose chain produced no force for this footage — the header
 states why (`chart.mode_no_trace`) rather than leaving an empty plot.
@@ -98,6 +95,19 @@ sampled on the pass's own grid, so the frame carries that policy (`ImageFrame.ar
 Verify: `test_replay_analysis.py::test_the_3d_pane_is_fed_the_same_frame_the_canvas_draws`,
 `::test_a_display_change_that_moves_the_grid_is_refused_not_served`.
 
+### Calibration choices and curve retention
+
+Recording setups scope calibration, confirmed device, unloaded and tracker references to one
+directory; the profile stays locked. References use recorded IDs/times. Chosen calibration content and force-channel choice enter
+the cache key. A complete `sources.forces="recomputed"` result replaces the displayed CSV trace,
+labelled `chart.mode_recomputed`; original files remain unchanged. Failed/cancelled passes
+replace no trace. Without an override, recorded force retains priority.
+
+Display controls preserve measurements, session time and partial axes, including FN-only.
+New live runs remain independent; manual graph reset may clear the graph. Storage remains
+bounded and reports drops. See the [SDK calibration contract](../../../../orisys-sdk/docs/calibration-model-contract.zh.md).
+Verify: `test_recording_recalibration.py`, `test_curve_retention.py`, `test_force_history.py`.
+
 ## 5. What the 2D view can show
 
 The modes come from the frame's own fields and from whether a result exists (`plan_image`,
@@ -171,7 +181,3 @@ wipe-on-exit preference and result export (≈70 MB per ten minutes).
 
 * The render cost (≈1.4 ms) and the PNG estimate (180–540 MB per ten minutes) are the owner's
   bench; Part B §14's snapshots (4.2–4.9 kB each) suggest the estimate is high.
-* A chosen calibration can be applied to the **box** chain only (`Sensor(cal_path=…)`). The
-  finger runtime opens its sensor without one, so a non-default curve for a finger profile is
-  refused rather than silently ignored — the SDK has no entry point for it (reported, not
-  worked around).

apps/studio/src/orisys_studio/app_window.py

@@ -9,6 +9,7 @@ from pathlib import Path
 from typing import Any
 
 from orisys_app_shared.acquisition.constants import FORCE_SAMPLE_RATE_HZ
+from orisys_app_shared.analysis.bare_video import BareVideoSetup
 from orisys_app_shared.acquisition.display_orientation import (
     DEFAULT_FINGER_ORIENTATION,
     effective_orientation,
@@ -158,9 +159,8 @@ class StudioMainWindow(QMainWindow):
         self.prefs: dict[str, Any] = dict(prefs or {})
         self._theme = str(self.prefs.get("theme") or "dark")
         self._language = str(self.prefs.get("language") or "zh_CN")
-        #: Reference-frame override for the next analysis pass on a real recording
-        #: (from Analysis ▸ Analysis setup…). Bare-video workspaces store this in session.json.
-        self._analysis_reference_override: int | None = None
+        #: Accepted choices are scoped to each recording; display changes only read them.
+        self._recording_analysis_setups: dict[Path, BareVideoSetup] = {}
         # The view preset, the calibration panel, the 3D pane's switch and the fps
         # readout are the controllers' state; the window reads and writes them through
         # the shims below.
@@ -2330,19 +2330,16 @@ class StudioMainWindow(QMainWindow):
         Clearing the curves alone is not a display reset *here*: a recording is only
         drawn when its source is (re)attached — measured, the curves stay empty through
         playback — so the operator would be left with a blank chart where the trace used
-        to be. Re-attaching the recording's own source is the path opening it takes: the
-        history, curves, selection and window go back to their defaults, the whole
-        recording is drawn again, and the playhead returns to the start so the chart
+        to be. Re-attaching the current recorded or recomputed source restores the
+        curves, selection and window. The playhead returns to the start so the chart
         cursor and the transport agree.
 
-        It touches nothing the device owns (there is no device session in this view) and
-        no preference: the unit the charts are in is kept, unlike ``force_plots.reset``,
-        which drops the display back to raw.
+        It touches nothing the device owns. The replay controller keeps a supported
+        unit for the active source instead of resetting the unit to raw.
         """
         reader = self.replay.reader()
         if reader is not None:
-            self.force_plots.set_recording_source(reader)
-            self.force_plots.show_all()
+            self.replay_ctl.apply_source(True)
         # The chart cursor is this view's playhead: both go back to the start. The
         # cursor is set even without a reader, because a data-only recording has no
         # video for the engine to move to.
@@ -2600,32 +2597,31 @@ class StudioMainWindow(QMainWindow):
         progress callback; both are ``None`` for a caller that only wants to ask whether
         a compatible result is already stored.
 
-        Two facts a *generated* workspace adds and a recording never has: the calibration
-        the operator chose (a recording names the curve in force, not the file), and
-        whether to store the chain's own per-frame force. Beside a recording, force is a
-        measurement in ``forces.csv`` and the pass stores none of it; over a bare video
-        there is no CSV, so the chain's recomputation is all there is and ``synthetic`` in
-        the session is what says so.
+        An accepted recording setup supplies calibration, device confirmation, zero
+        window and reference without rewriting session.json. Its pass stores a separate
+        force trace; a recording with no override retains its original measured curves.
         """
         from orisys_app_shared.analysis.service import AnalysisService, chain_spec_for
         from orisys_app_shared.record import RecordingReader
 
         session = RecordingReader(Path(recording)).session()
         synthetic = dict(session.get("synthetic") or {})
+        setup = self._recording_analysis_setups.get(Path(recording).resolve())
+        calibration = setup.calibration if setup is not None else synthetic.get("calibration")
         chain = chain_spec_for(
             session,
-            calibration=synthetic.get("calibration") or None,
-            device_id=synthetic.get("device_id") or None,
+            calibration=calibration or None,
+            device_id=setup.device_id if setup is not None else synthetic.get("device_id") or None,
+            calibration_disabled=(setup is not None or bool(synthetic)) and not calibration,
         )
-        reference = synthetic.get("reference_frame")
-        if reference is None:
-            reference = getattr(self, "_analysis_reference_override", None)
+        reference = setup.reference_frame if setup is not None else synthetic.get("reference_frame")
         return AnalysisService(
             Path(recording),
             chain=chain,
             cancelled=cancelled,
             on_progress=on_progress,
-            store_force=bool(synthetic),
+            store_force=bool(synthetic) or setup is not None,
+            unloaded_reference_frames=None if setup is None else setup.unloaded_reference_frames,
             reference_frame=None if reference is None else int(reference),
         )
 
@@ -2688,9 +2684,8 @@ class StudioMainWindow(QMainWindow):
     def _recording_analysis_overrides(self, recording: Path) -> bool:
         """Ask for reference frame (and optional calibration) on a real recording.
 
-        The profile is locked to the session's own chain. Accept stores a reference-frame
-        override on the window for the next :meth:`_analysis_service` call; declining
-        leaves the current result alone.
+        The profile stays locked to the session's chain. Accepted choices belong to
+        this recording; declining leaves its current result and choices alone.
         """
         from orisys_app_shared.analysis import bare_video
         from orisys_app_shared.record import RecordingReader
@@ -2706,23 +2701,33 @@ class StudioMainWindow(QMainWindow):
         catalog = scan_sensor_catalog()
         config_ref = str(dict(session.get("device") or {}).get("config_ref") or "")
         selected = self.sensor_picker.selected_entry()
+        previous = self._recording_analysis_setups.get(Path(recording).resolve())
         dialog = VideoAnalysisDialog(
             video=Path(video),
             facts=facts,
             catalog=catalog,
             window=self,
             initial_profile=config_ref or (selected.ref if selected is not None else ""),
-            initial_reference_frame=getattr(self, "_analysis_reference_override", None),
+            initial_reference_frame=None if previous is None else previous.reference_frame,
+            initial_calibration=None if previous is None else previous.calibration,
+            prefer_no_calibration=previous is not None and previous.calibration is None,
+            initial_device_id=None if previous is None else previous.device_id,
             lock_profile=True,
             theme=self._theme,
             remembered_calibration=self.live_calibration_for,
         )
+        dialog.set_reference_times(
+            {frame.frame_id: frame.t_rel_s for frame in reader.info().frames if frame.in_video},
+            initial_frame=None if previous is None else previous.reference_frame,
+        )
+        if previous is not None:
+            dialog.unloaded_reference.setChecked(previous.unloaded_reference_frames == 30)
         if dialog.exec() != VideoAnalysisDialog.DialogCode.Accepted:
             return False
         setup = dialog.choice()
         if setup is None:
             return False
-        self._analysis_reference_override = setup.reference_frame
+        self._recording_analysis_setups[Path(recording).resolve()] = setup
         return True
 
     def _submit_measurement_3d(

apps/studio/src/orisys_studio/replay_controller.py

@@ -416,8 +416,8 @@ class ReplayController(QObject):
 
         For a bare / synthetic video this rebuilds the workspace from the new answers;
         a different calibration or reference frame changes the result key, so the pass
-        runs again. For a real recording, only the reference frame is overridden for the
-        next pass (the session's own profile stays locked).
+        runs again. A real recording also accepts calibration and zero/reference
+        choices while keeping its recorded profile locked.
         """
         from orisys_app_shared.analysis import bare_video
 
@@ -452,9 +452,8 @@ class ReplayController(QObject):
             if not self._host.recording_analysis_overrides(Path(recording)):
                 return
             self._clear_analysis_state()
-            # Drop a cached result that was keyed under a different reference so the
-            # new pass is what serves the cursor.
-            self.results.close()
+            # The service looks up the new key. Keep the last complete result
+            # readable until a replacement commits, including after cancellation.
             self.refresh_state()
             self.on_analysis_requested()
             return
@@ -1437,19 +1436,20 @@ class ReplayController(QObject):
         """Point the charts at the recording (or back at the live session)."""
         if active and self._engine.is_loaded():
             reader = self._engine.reader()
-            self._charts.set_recording_source(reader)
+            kind = self._serve_curves()
             # A recording is shown in a unit it actually carries: newton only when
             # it has a calibrated axis somewhere, otherwise the charts would be
             # empty and every card a dash. The operator's preference is kept when
             # the recording can honour it.
-            wanted = "N" if self._charts.unit() == "N" else "raw"
-            unit = self.unit_for(reader)
-            self._engine.set_unit(unit)
-            self._host.set_display_unit(unit)
-            if unit != wanted:
-                self._host.notify(t("status.units_raw_fallback"))
-                self._charts.show_unit_fallback()
-            self._charts.show_all()
+            if kind == "recorded":
+                wanted = "N" if self._charts.unit() == "N" else "raw"
+                unit = self.unit_for(reader)
+                self._engine.set_unit(unit)
+                self._host.set_display_unit(unit)
+                if unit != wanted:
+                    self._host.notify(t("status.units_raw_fallback"))
+                    self._charts.show_unit_fallback()
+                self._charts.show_all()
             self._image_panel.set_source_kind("replay")
             return
         if active and self._engine.is_video_only():
@@ -1481,7 +1481,8 @@ class ReplayController(QObject):
           the loop. This is the measurement.
         * ``recomputed`` — the analysis result's per-frame force, which the *pass* produced
           by re-running the vision chain over the video (``provenance.sources["forces"]``).
-          A bare video has nothing else, and it must never be read as the first.
+          A bare video has nothing else. An explicitly reconfigured recording also
+          uses this trace once its complete result is adopted, preserving its CSV.
 
         When there is neither, the panel is told *why* instead of being left empty under
         wording that implies data is coming: nothing has been analysed yet, or the profile's
@@ -1489,11 +1490,13 @@ class ReplayController(QObject):
         for frames it cannot calibrate). Returns which of the three happened.
         """
         reader = self._engine.reader()
-        if reader is not None and (Path(reader.directory) / "forces.csv").is_file():
-            self._charts.set_recording_source(reader)
-            return "recorded"
         if session is None:
             session = self.available_result()
+        provenance = getattr(getattr(session, "reader", None), "provenance", None)
+        recomputed = dict(getattr(provenance, "sources", {}) or {}).get("forces") == "recomputed"
+        if reader is not None and not recomputed:
+            self._charts.set_recording_source(reader)
+            return "recorded"
         if session is None:
             self._charts.set_curve_source(
                 None, reason=t("chart.trace_not_analysed")

apps/studio/src/orisys_studio/ui/force_plots.py

@@ -240,6 +240,8 @@ class ForcePlotsPanel(QFrame):
             lowpass_cutoff_hz=0.0,
             y_axis_min_span=0.5,
             max_fps=DEFAULT_MAX_FPS,
+            # Live packets and every source already use session-relative seconds.
+            time_origin=0.0,
         )
 
         root = QVBoxLayout(self)
@@ -556,8 +558,20 @@ class ForcePlotsPanel(QFrame):
         self._render_value_cards()
 
     def set_window_sec(self, sec: float) -> None:
+        sec = max(0.1, float(sec))
+        if sec == self.history.window_sec:
+            return
         self.history.set_window_sec(sec)
-        self._clear_curves()
+        if self._mode == "browse":
+            self.refresh_from_store()
+        elif self._source_ready:
+            self._reload_from_store()
+        else:
+            state = self.history.state()
+            if state is not None:
+                values = self._curve_values(state.values)
+                for index, curve in enumerate(self.curves):
+                    curve.setData(state.times, values[:, index])
         self._apply_axis_mode()
 
     def set_axis_limits(
@@ -945,6 +959,8 @@ class ForcePlotsPanel(QFrame):
     def follow_latest(self) -> None:
         """Leave history browsing and resume the live rolling window."""
         self._set_mode("follow")
+        if self._source_ready:
+            self._reload_from_store()
         self._apply_axis_mode()
 
     def show_all(self) -> None:
@@ -1326,16 +1342,24 @@ class ForcePlotsPanel(QFrame):
         data = self._source.window(
             max(first, last - span), last, unit=self._unit
         )
+        # This is a display cache, never the source. Replace it rather than append
+        # another copy of the same rows on each unit/window/source refresh.
+        self.history.clear()
         if len(data) == 0:
+            self._clear_curves()
             return
         self._availability_from_window(data)
-        values = np.asarray(data.values, dtype=float)
-        for index in range(len(data)):
-            if not bool(data.valid[index]):
-                continue
+        values = np.asarray(data.values, dtype=float).copy()
+        mask = plottable_axis_mask(values, data.valid)
+        values[~mask] = np.nan
+        valid_rows = np.flatnonzero(mask.any(axis=1))
+        if not len(valid_rows):
+            self._clear_curves()
+            return
+        # Raw-only startup frames have no Newton sample. Keep later invalid rows
+        # as gaps, but do not count the absent prefix as calibrated measurements.
+        for index in range(int(valid_rows[0]), len(data)):
             row = values[index]
-            if not all(np.isfinite(v) for v in row):
-                continue
             self.history.push(
                 float(data.times[index]),
                 float(row[0]),
@@ -1394,7 +1418,7 @@ class ForcePlotsPanel(QFrame):
 
     def _preview_fixed_y(self) -> bool:
         """Whether to paint fixed axes before any sample has arrived."""
-        if self.history.sample_count > 0:
+        if self.history.sample_count > 0 or self._mode == "browse":
             return self._uses_fixed_y()
         if self._unit == "N":
             return bool(self._fixed_newton)
@@ -1410,9 +1434,15 @@ class ForcePlotsPanel(QFrame):
                     plot.getAxis("left").setTicks([_nice_ticks(ymin, ymax, count=5)])
                 else:
                     plot.getAxis("left").setTicks(None)
+                    plot.enableAutoRange(axis="y", enable=True)
+                    plot.getViewBox().updateAutoRange()
             if self._mode == "follow":
+                state = self.history.state()
+                x_range = (
+                    state.x_range if state is not None else (0.0, self.history.window_sec)
+                )
                 for plot in self.plots:
-                    plot.setXRange(0.0, self.history.window_sec, padding=0.0)
+                    plot.setXRange(*x_range, padding=0.0)
         self._sync_zero_lines()
 
     def _sync_zero_lines(self) -> None:

apps/studio/src/orisys_studio/ui/video_analysis_dialog.py

@@ -102,6 +102,7 @@ class VideoAnalysisDialog(QDialog):
         super().__init__(window)
         self._video = Path(video)
         self._facts = facts
+        self._reference_times: dict[int, float] | None = None
         self._catalog = catalog
         self._theme = str(theme)
         self._entries: list[CatalogEntry] = profiles_for_video(catalog.entries)
@@ -287,6 +288,9 @@ class VideoAnalysisDialog(QDialog):
             self.note_label.setText(t("video_analysis.blocked", reason=blocked))
             return None
         reference = int(self.reference_spin.value())
+        if self._reference_times is not None and reference not in self._reference_times:
+            self.note_label.setText(t("video_analysis.reference_missing", frame=reference))
+            return None
         problem = self._device_problem()
         if problem:
             self.note_label.setText(problem)
@@ -298,7 +302,10 @@ class VideoAnalysisDialog(QDialog):
             # the first frame it processes already *is* the reference and no reset is owed.
             # Saying so as ``None`` keeps a reset the pass cannot apply from being recorded
             # as one that happened.
-            reference_frame=None if reference == 1 else reference,
+            reference_frame=(
+                None if reference == (min(self._reference_times) if self._reference_times else 1)
+                else reference
+            ),
             device_id=self._confirmed_device_id(),
             unloaded_reference_frames=30 if self.unloaded_reference.isChecked() else 0,
         )
@@ -479,9 +486,24 @@ class VideoAnalysisDialog(QDialog):
             return
         self.accept()
 
+    def set_reference_times(self, times: dict[int, float], *, initial_frame: int | None = None) -> None:
+        """Use a recording's actual frame IDs and session-relative seconds."""
+        if not times:
+            return
+        self._reference_times = dict(times)
+        first, last = min(times), max(times)
+        self.reference_spin.setRange(first, last)
+        self.reference_spin.setValue(first if initial_frame is None else int(initial_frame))
+        self._refresh_time_label()
+
     def _refresh_time_label(self) -> None:
         fps = float(self._facts.fps) or 0.0
-        seconds = (int(self.reference_spin.value()) - 1) / fps if fps > 0 else 0.0
+        reference = int(self.reference_spin.value())
+        seconds = (
+            self._reference_times.get(reference, 0.0)
+            if self._reference_times is not None
+            else (reference - 1) / fps if fps > 0 else 0.0
+        )
         self.reference_time_label.setText(
             t("video_analysis.reference_time", seconds=f"{seconds:.3f}")
         )

apps/studio/tests/test_curve_retention.py

@@ -0,0 +1,114 @@
+"""Display controls retain measurements and redraw the same source timeline."""
+
+import numpy as np
+import pytest
+from orisys_app_shared.force.session import SessionSample, SessionStore
+from orisys_app_shared.force.source import StoreCurveSource
+
+from orisys_studio.ui.force_plots import ForcePlotsPanel
+
+
+def _store(*, partial=False):
+    store = SessionStore()
+    for index in range(21):
+        raw = float(index + 100)
+        shear = float("nan") if partial else raw / 100
+        store.append(SessionSample(
+            frame_id=index, t_rel_s=float(index),
+            fn_raw=raw, fx_raw=-raw, fy_raw=raw,
+            fn_n=raw / 100, fx_n=shear, fy_n=shear,
+            fn_raw_processed=raw, fx_raw_processed=-raw, fy_raw_processed=raw,
+            fn_n_processed=raw / 100, fx_n_processed=shear, fy_n_processed=shear,
+        ))
+    return store
+
+
+def _curve(panel, axis=0):
+    x, y = panel.curves[axis].getData()
+    if x is None:
+        return np.empty(0), np.empty(0)
+    return np.asarray(x, dtype=float), np.asarray(y, dtype=float)
+
+
+@pytest.mark.parametrize("browse", [False, True])
+def test_y_limit_settings_keep_trace_window_cursor_and_store(make_window, browse):
+    window = make_window(units="raw", plot_window_sec=4.0)
+    store = _store()
+    window.force_plots.set_store(store)
+    if browse:
+        window.force_plots.set_window(5.0, 12.0)
+    window.force_plots.set_cursor(8.0)
+    before = tuple(array.copy() for array in _curve(window.force_plots))
+    x_range = window.force_plots.plots[0].viewRange()[0]
+    # No acquisition tick follows: an idle or paused view must redraw immediately.
+    window.display_ctl.apply_plot_settings({"fn_raw_max": 2000.0})
+    for actual, expected in zip(_curve(window.force_plots), before):
+        np.testing.assert_array_equal(actual, expected)
+    assert window.force_plots.plots[0].viewRange()[0] == pytest.approx(x_range)
+    assert window.force_plots.cursor_time() == 8.0
+    assert len(store.visible(0.0, 20.0).times) == 21
+
+
+@pytest.mark.parametrize("kind", ["memory", "disk", "analysis"])
+def test_window_and_unit_changes_preserve_partial_axes_and_session_time(qt_app, kind):
+    store = _store(partial=True)
+    panel = ForcePlotsPanel()
+    try:
+        source = StoreCurveSource(store)
+        source.kind = kind
+        panel.set_curve_source(source)
+        for unit in ("N", "raw", "N"):
+            panel.set_units(unit)
+            for seconds in (4.0, 8.0, 8.0):
+                panel.set_window_sec(seconds)
+                x, y = _curve(panel)
+                assert len(x) > 1
+                assert x[-1] == 20.0
+                assert x[0] == 20.0 - seconds
+                assert y[-1] == pytest.approx(1.2 if unit == "N" else 120.0)
+                assert panel.plots[0].viewRange()[0][1] == pytest.approx(20.0)
+                if unit == "N":
+                    assert np.isnan(_curve(panel, 1)[1]).all()
+                    assert np.isnan(_curve(panel, 2)[1]).all()
+        assert len(store.visible(0.0, 20.0).times) == 21
+    finally:
+        panel.close()
+        panel.deleteLater()
+
+
+def test_back_to_latest_reloads_the_live_tail_without_duplicate_samples(qt_app):
+    panel = ForcePlotsPanel()
+    try:
+        panel.set_store(_store())
+        for _ in range(2):
+            panel.set_window(2.0, 7.0)
+            panel.follow_latest()
+            x, y = _curve(panel)
+            np.testing.assert_array_equal(x, np.arange(16.0, 21.0))
+            np.testing.assert_array_equal(y, np.arange(116.0, 121.0))
+        panel.reset()
+        assert _curve(panel)[0].size == 0
+    finally:
+        panel.close()
+        panel.deleteLater()
+
+
+def test_auto_y_range_keeps_replayed_data_visible_after_unit_switch(qt_app):
+    panel = ForcePlotsPanel()
+    try:
+        panel.set_store(_store())
+        panel.show_all()
+        panel.set_axis_limits(
+            fn_min=0, fn_max=20, shear_max=20,
+            fn_raw_min=0, fn_raw_max=0, shear_raw_max=0,
+        )
+        panel.set_units("N")
+        panel.set_units("raw")
+        qt_app.processEvents()
+        x, y = _curve(panel)
+        assert x.size == 21
+        low, high = panel.plots[0].viewRange()[1]
+        assert low <= y.min() <= y.max() <= high
+    finally:
+        panel.close()
+        panel.deleteLater()

apps/studio/tests/test_recording_recalibration.py

@@ -0,0 +1,173 @@
+"""A recording's analysis choices reach processing, cache identity and curves."""
+
+import hashlib
+import json
+from pathlib import Path
+from types import SimpleNamespace
+
+import pytest
+from orisys_app_shared.analysis.bare_video import BareVideoSetup
+from orisys_app_shared.analysis.service import AnalysisService, ChainSpec
+from orisys_app_shared.i18n import t
+from PySide6.QtWidgets import QDialog
+
+from orisys_studio import app_window, replay_controller
+
+
+def _calibration(tmp_path):
+    from orisys.calibration import load
+
+    path = tmp_path / "chosen.json"
+    path.write_text(json.dumps(load(sensor_type="box").to_dict()), encoding="utf-8")
+    return path
+
+
+@pytest.mark.parametrize("calibrated", [True, False])
+def test_recording_dialog_keeps_all_choices_for_its_own_recording(
+    make_window, replay_recording, tmp_path, monkeypatch, calibrated,
+):
+    calibration = _calibration(tmp_path) if calibrated else None
+    setup = BareVideoSetup(
+        profile_ref="shipped/box", calibration=calibration, reference_frame=12,
+        device_id="confirmed" if calibrated else None,
+        unloaded_reference_frames=30 if calibrated else 0,
+    )
+    monkeypatch.setattr(app_window.VideoAnalysisDialog, "exec", lambda self: QDialog.Accepted)
+    monkeypatch.setattr(app_window.VideoAnalysisDialog, "choice", lambda self: setup)
+    window = make_window()
+    before = (Path(replay_recording) / "session.json").read_bytes()
+    assert window._recording_analysis_overrides(replay_recording)
+    service = window._analysis_service(replay_recording)
+    assert service.chain.calibration == calibration
+    assert service.chain.device_id == setup.device_id
+    assert service.chain.calibration_disabled is (not calibrated)
+    assert service.reference_frame == 12
+    assert service.unloaded_reference_frames == setup.unloaded_reference_frames
+    assert service.store_force
+    # Another recording must not inherit this one's reference or model.
+    other = tmp_path / "other"
+    other.mkdir()
+    (other / "session.json").write_bytes(before)
+    untouched = window._analysis_service(other)
+    assert untouched.chain.calibration is None
+    assert untouched.reference_frame is None
+    assert not untouched.store_force
+    assert (Path(replay_recording) / "session.json").read_bytes() == before
+
+
+def test_chosen_calibration_content_and_force_channel_change_cache_key(replay_recording, tmp_path):
+    calibration = _calibration(tmp_path)
+    chain = ChainSpec(sensor_type="box", calibration=calibration)
+    service = AnalysisService(replay_recording, chain=chain, store_force=True)
+    original = service.dependency_report()["key"].digest
+    data = json.loads(calibration.read_text(encoding="utf-8"))
+    data["meta"] = {**data.get("meta", {}), "note": "changed coefficients file"}
+    calibration.write_text(json.dumps(data), encoding="utf-8")
+    assert service.dependency_report()["key"].digest != original
+    recorded = AnalysisService(replay_recording, chain=chain, store_force=False)
+    assert recorded.dependency_report()["key"].digest != service.dependency_report()["key"].digest
+
+
+def test_reference_selector_uses_recorded_ids_and_times(qt_app, tmp_path):
+    from orisys_app_shared.analysis.bare_video import VideoFacts
+    from orisys_app_shared.sensors import scan_sensor_catalog
+
+    dialog = app_window.VideoAnalysisDialog(
+        video=tmp_path / "clip.mp4",
+        facts=VideoFacts(tmp_path / "clip.mp4", 33, 30.0, 640, 480),
+        catalog=scan_sensor_catalog(),
+    )
+    try:
+        assert dialog.select_profile("shipped/box")
+        dialog.select_calibration(None)
+        dialog.set_reference_times({20: 0.0, 36: .9, 52: 1.9})
+        assert dialog.reference_spin.minimum() == 20
+        assert dialog.reference_spin.maximum() == 52
+        assert dialog.choice().reference_frame is None
+        dialog.reference_spin.setValue(36)
+        assert dialog.choice().reference_frame == 36
+        assert dialog.reference_time_label.text() == t("video_analysis.reference_time", seconds="0.900")
+        dialog.reference_spin.setValue(35)
+        assert dialog.choice() is None
+        assert dialog.note_label.text() == t("video_analysis.reference_missing", frame=35)
+    finally:
+        dialog.close()
+        dialog.deleteLater()
+
+
+def test_recalibrated_recording_uses_recomputed_trace_through_display_controls(
+    make_window, replay_recording, monkeypatch,
+):
+    from orisys_app_shared.force.session import SessionSample, SessionStore
+    from orisys_app_shared.force.source import StoreCurveSource
+
+    window = make_window(units="raw")
+    assert window.replay.open_recording(replay_recording)
+    session = SimpleNamespace(reader=SimpleNamespace(
+        provenance=SimpleNamespace(sources={"forces": "recomputed"}), meta={},
+    ))
+    store = SessionStore()
+    for index in range(3):
+        store.append(SessionSample(
+            frame_id=index, t_rel_s=float(index), fn_raw=100.0 + index,
+            fn_raw_processed=100.0 + index,
+        ))
+    source = StoreCurveSource(store)
+    source.kind = "analysis"
+    source.reader = session.reader
+    source.unit_available = lambda unit: True
+    monkeypatch.setattr(replay_controller, "AnalysisCurveSource", lambda reader: source)
+    monkeypatch.setattr(window.replay_ctl, "available_result", lambda: session)
+    files = [Path(replay_recording) / name for name in ("forces.csv", "frames.csv", "session.json")]
+    before = [hashlib.sha256(path.read_bytes()).hexdigest() for path in files]
+    assert window.replay_ctl._serve_curves(session) == "recomputed"
+    assert window.force_plots.curve_kind() == "analysis"
+    assert window.force_plots.mode_label.text() == t("chart.mode_recomputed")
+    window.display_ctl.apply_plot_settings({"fn_raw_max": 2000.0})
+    window.replay_ctl.apply_source(True)
+    assert window.force_plots.curve_kind() == "analysis"
+    window._reset_display()
+    assert window.force_plots.curve_kind() == "analysis"
+    assert [hashlib.sha256(path.read_bytes()).hexdigest() for path in files] == before
+
+
+def test_accepting_setup_then_cancelling_keeps_the_last_complete_result(
+    make_window, replay_recording, monkeypatch,
+):
+    window = make_window()
+    assert window.replay.open_recording(replay_recording)
+    previous = SimpleNamespace(recording=Path(replay_recording), close=lambda: None)
+    window.replay_ctl.results.open_session(previous)
+    monkeypatch.setattr(window, "_recording_analysis_overrides", lambda recording: True)
+    monkeypatch.setattr(window.replay_ctl, "refresh_state", lambda: None)
+    monkeypatch.setattr(window.replay_ctl, "render_frame", lambda: None)
+    requested = []
+    monkeypatch.setattr(window.replay_ctl, "on_analysis_requested", lambda: requested.append(True))
+    window.replay_ctl.on_analysis_setup()
+    assert requested == [True]
+    assert window.replay_ctl.available_result() is previous
+    window.replay_ctl.on_analysis_finished(SimpleNamespace(cancelled=True, frames_written=0))
+    assert window.replay_ctl.available_result() is previous
+
+
+@pytest.mark.parametrize("family", ["box", "finger"])
+def test_explicit_raw_choice_disables_default_calibration_before_processing(monkeypatch, tmp_path, family):
+    from orisys_app_shared.analysis import service as service_module
+    import orisys.finger
+
+    applied = []
+    sensor = SimpleNamespace(
+        cap=None, _read_frame=lambda: (False, None), get_img=lambda **kwargs: None,
+        set_calibration=applied.append,
+    )
+    runtime = SimpleNamespace(
+        tactile=sensor, capture=None, read_source=lambda: (False, None),
+        process_frame=lambda frame: None, set_calibration=applied.append,
+    )
+    monkeypatch.setattr(service_module, "_import_sdk", lambda: SimpleNamespace(Sensor=lambda *args, **kwargs: sensor))
+    monkeypatch.setattr(orisys.finger, "FingerRuntime", SimpleNamespace(open=lambda **kwargs: runtime))
+    video = tmp_path / "clip.mp4"
+    video.touch()
+    chain = ChainSpec(sensor_type=family, calibration_disabled=True)
+    service_module._OpenChain(chain, video, tmp_path).open()
+    assert applied == [None]