完善 Autocal 多测点标定流程及会话复核

统一测点坐标、保持窗口和试验目录，补齐逐点初步分析。定向测试与真实视频闭环通过；两项轮询失败在修改前版本同样复现。

apps/autocal/config/locales/en_US.json

@@ -271,25 +271,24 @@
     "uv": "U / V (px)",
     "position": "Mesh position",
     "levels": "Load levels (N)",
-    "hold": "Planned hold",
-    "hold_tip": "The planned hold time is saved; levels and recording do not advance automatically.",
+    "hold": "Hold per level",
+    "hold_tip": "Count down after arrival confirmation. End the hold window and prompt the next level; video continues. Time alone does not verify stability.",
     "reference": "Manual reference force (N)",
-    "start": "Record this site",
-    "start_tip": "Create one trial folder for this site and continuously record images and sensor output. This does not move the platform. One load-unload cycle uses this folder.",
-    "confirm": "Mark load reached",
-    "confirm_tip": "After reaching the target and entering the manual reference force, mark this level's start and begin its hold timer. Images are already recording.",
-    "finish": "Stop and complete",
-    "finish_tip": "After all levels are marked, stop recording, flush the files, and check this trial.",
-    "abort": "Abort this recording",
-    "abort_tip": "Stop recording, keep this folder, and mark it incomplete. Starting again creates a new folder; it does not resume this one.",
+    "start": "Start this trial",
+    "start_tip": "Create a trial in this calibration session. Record initial zero, loading, unloading and recovery continuously; no platform motion is issued.",
+    "confirm": "Target reached: start hold",
+    "confirm_tip": "Reach the current target and enter the actual reference load. Keep the load unchanged until the countdown ends.",
+    "finish": "Complete this trial",
+    "finish_tip": "After initial zero and every loading/unloading hold, stop recording, check and save the trial.",
+    "abort": "End early (keep incomplete data)",
+    "abort_tip": "End this trial immediately and keep its incomplete data. A retry creates a new trial in the same calibration session.",
     "load": "Load",
     "unload": "Unload",
-    "next_step": "Next: {branch} to {load:g} N",
-    "before_start": "Select a site and start the input, then begin recording",
-    "ready_to_finish": "All levels marked; recording can be stopped",
+    "next_step": "{branch} to {load:g} N; enter actual reference load and start hold",
+    "before_start": "Select a site and start input, then start the trial with initial zero",
+    "ready_to_finish": "All hold windows complete; complete this trial",
     "no_step": "No step pending",
     "progress": "Progress {done}/{total} · {status}",
-    "held": " · Current level held {seconds:.1f} s",
     "source_state": "Input: {status} · frame {frame} · capture drops {dropped}",
     "replay_note": "Video replay is for debugging; manual reference loads cannot be synced to the original experiment.",
     "idle": "Idle",
@@ -303,7 +302,17 @@
     "invalid_site": "Select a valid UV site first",
     "start_input": "Start camera or video input first",
     "reference_required": "Enter the actual reference load",
-    "output_required": "Choose an output directory"
+    "output_required": "Choose an output directory",
+    "zero": "Initial zero",
+    "holding": "Hold {branch} {load:g} N · {seconds:.1f} s remaining; do not change load",
+    "close_session": "Finish calibration session",
+    "close_session_tip": "Close the session containing multiple sites and trial attempts. Incomplete trials keep the session incomplete. The next trial creates a new session.",
+    "session_none": "No calibration session yet; the first trial creates it.",
+    "session_active": "Calibration session: {sites} sites · {trials} attempts\n{path}",
+    "session_closed": "Calibration session closed ({status}): {path}",
+    "close_before_mapping": "Finish the calibration session before changing UV mapping or bundle",
+    "path": "Trial path (N): {path}",
+    "invalid_levels": "Enter strictly increasing levels greater than 0 and at most 30 N"
   },
   "finger": {
     "title": "Finger calibration-point debug",
@@ -362,13 +371,28 @@
     "preview_no_gl": "No OpenGL context: {error}",
     "preview_draw_failed": "Drawing failed: {error}",
     "preview_solve_failed": "Solve failed: {error}",
-    "col_x": "x", "col_y": "y", "col_z": "z",
-    "col_nx": "nx", "col_ny": "ny", "col_nz": "nz",
-    "col_X": "X", "col_Y": "Y", "col_Z": "Z",
-    "col_yaw": "yaw", "col_pitch": "pitch", "col_residual": "residual(°)",
+    "col_x": "x",
+    "col_y": "y",
+    "col_z": "z",
+    "col_nx": "nx",
+    "col_ny": "ny",
+    "col_nz": "nz",
+    "col_X": "X",
+    "col_Y": "Y",
+    "col_Z": "Z",
+    "col_yaw": "yaw",
+    "col_pitch": "pitch",
+    "col_residual": "residual(°)",
     "loaded": "Bundle loaded: {vertices} vertices · {triangles} triangles · {extent} mm · {scale} mm per unit",
     "load_failed": "Load failed: {error}",
-    "picked": "Picked: residual {residual}° · yaw {yaw}° · pitch {pitch}°"
+    "picked": "Picked: residual {residual}° · yaw {yaw}° · pitch {pitch}°",
+    "export_sites": "Export operator site list…",
+    "export_sites_tip": "Export all points in displayed order, with UV pixels and sensor/platform millimetres. UV origin matches calibration.",
+    "export_no_points": "Pick UV sites first",
+    "export_edited_point": "Point {order} was edited in 3D and no longer matches its UV pixel; pick it again before exporting",
+    "sites_exported": "Operator site list exported: {path}",
+    "col_u_px": "U (px)",
+    "col_v_px": "V (px)"
   },
   "sequence": {
     "title": "Test sequence design",
@@ -446,5 +470,33 @@
     "bas_loaded": "BAS loaded",
     "yes": "Yes",
     "no": "No"
+  },
+  "review": {
+    "open": "Review calibration data…",
+    "title": "Exploratory calibration review",
+    "notice": "Inspection only: manual hold windows have not been verified stable. Replay does not establish original experiment timing. Fits are exploratory and never written to sensor configuration.",
+    "save": "Save new review",
+    "no_sites": "No sites in this session",
+    "candidate": "Candidate window",
+    "insufficient_samples": "Insufficient valid samples",
+    "replay": "Replay debug",
+    "unverified": "Stability unverified",
+    "fit": "Exploratory loading fit: sensitivity {sensitivity_raw_per_n:.6g} raw/N; gain {gain_n_per_raw:.6g} N/raw; offset {offset_n:.6g} N; fit RMSE {rmse_n:.4g} N (not independent validation error)",
+    "no_fit": "Insufficient load levels or raw-signal variation for a fit.",
+    "fit_line": "Exploratory loading fit",
+    "raw_axis": "Raw normal signal (raw)",
+    "force_axis": "Manual reference force (N)",
+    "chart_title": "Hold-window means: loading vs unloading",
+    "uv_title": "Site sensitivity: blue→red {low:.4g}→{high:.4g} raw/N; grey has no fit",
+    "issues": "Skipped {count} incomplete trials; complete holds still require stability review.",
+    "saved": "Saved new review: {path}",
+    "col_trial": "Trial",
+    "col_branch": "Phase",
+    "col_load": "Reference (N)",
+    "col_samples": "Valid samples",
+    "col_mean": "Raw mean",
+    "col_std": "Raw std",
+    "col_duration": "Hold (s)",
+    "col_quality": "Quality"
   }
 }