diff --git a/apps/studio/config/locales/en_US.json b/apps/studio/config/locales/en_US.json
index 22a5f78..f888d0b 100644
--- a/apps/studio/config/locales/en_US.json
+++ b/apps/studio/config/locales/en_US.json
@@ -181,7 +181,10 @@
     "export_identity": "file identity  type {sensor_type} · SN {sn} · config {config}",
     "thumb_placeholder": "Product model",
     "family_unidentified": "Unidentified",
-    "catalog_profile": "Profile {profile_id} · family {family} · from {origin} · {state}",
+    "catalog_profile": "Profile {profile_id} · {shape} · from {origin} · SDK validation: {state}",
+    "catalog_shape_descriptor": "descriptor bundle",
+    "catalog_shape_compatibility": "compatibility bundle, no descriptor",
+    "catalog_shape_unreadable": "no readable bundle",
     "catalog_blocked": "Cannot start: {reason}"
   },
   "panels": {
diff --git a/apps/studio/config/locales/zh_CN.json b/apps/studio/config/locales/zh_CN.json
index ef73faf..3cb3711 100644
--- a/apps/studio/config/locales/zh_CN.json
+++ b/apps/studio/config/locales/zh_CN.json
@@ -181,7 +181,10 @@
     "export_identity": "文件身份  类型 {sensor_type} · SN {sn} · 配置 {config}",
     "thumb_placeholder": "产品型号",
     "family_unidentified": "未识别",
-    "catalog_profile": "配置档案 {profile_id} · 家族 {family} · 来源 {origin} · 状态 {state}",
+    "catalog_profile": "配置档案 {profile_id} · {shape} · 来源 {origin} · SDK 校验：{state}",
+    "catalog_shape_descriptor": "描述符配置包",
+    "catalog_shape_compatibility": "兼容配置包（无描述符）",
+    "catalog_shape_unreadable": "没有可读取的配置包",
     "catalog_blocked": "无法启动：{reason}"
   },
   "panels": {
diff --git a/apps/studio/config/sensors/finger/manifest.json b/apps/studio/config/sensors/finger/manifest.json
index 27f92c8..6f87d2f 100644
--- a/apps/studio/config/sensors/finger/manifest.json
+++ b/apps/studio/config/sensors/finger/manifest.json
@@ -1,6 +1,17 @@
 {
-  "name": "finger",
+  "schema_version": 1,
+  "profile_id": "orisys.finger.r01",
+  "display_name": "Finger R01",
+  "product_family": "finger",
+  "processing_backend": "uv_unroll",
   "sensor_json": "sensor.json",
+  "computational_assets": {
+    "unroll_map": "assets/30fps-0703/unroll_map_uv_s0.42.npz"
+  },
+  "assets": {
+    "scene": "scene/finger-display-1.0.0.oryscene"
+  },
+  "name": "finger",
   "assets_dir": "assets/30fps-0703",
   "viz_pose": "assets/visualization/world_to_cam.npy"
 }
diff --git a/apps/studio/docs/replay-analysis-part-b.md b/apps/studio/docs/replay-analysis-part-b.md
index 264cf00..d6698b2 100644
--- a/apps/studio/docs/replay-analysis-part-b.md
+++ b/apps/studio/docs/replay-analysis-part-b.md
@@ -19,8 +19,8 @@
 （连"原始图像"一起），派生模式那些帧一律从结果读、按窗口唯一的 2D 出口画。
 
 图表、二维画布、三维面板都读这一个游标，模式由 `ReplayEngine.mode()` 回答；「从视频重算」
-因此不再是第三种来源，而是**显式重跑**这一遍的开关（第 10 节）。时间基准是**信号时间**
-（Part A 第 5 节），进度、位置、单步与跳转都说它。
+与打开录像共用 `ReplayController.on_analysis_requested()`（第 10 节），不再另开一条采集链。
+时间基准是**信号时间**（Part A 第 5 节），进度、位置、单步与跳转都说它。
 
 **应用里的时间轴永远是录像的。** 引擎留在 `recording`：游标、帧 id 与时长都是录像自己的，
 结果挂在游标后面当缓存（`available_result()`），`_adopt_session()` 调用 `use_recording()` 保证
@@ -58,10 +58,14 @@
 
 | 视图 | 读什么 | 怎么读 |
 |---|---|---|
-| 图表 | `forces.csv`（记录值） | `charts.set_cursor(t)` 用同一游标；结果里不存力 |
+| 图表 | `forces.csv`（记录值），**或结果里重算的力**（裸视频） | `charts.set_cursor(t)` 用同一游标；两条来源在标题上分开命名（`chart.mode_replay` / `chart.mode_recomputed`） |
 | 二维画布 | 结果的 `flow`、`depth` 与 `valid_mask` | `ImageFrame` 走窗口唯一的 2D 出口 `_show_image_frame`（录像时间轴上的派生视图带 `source="replay"` 与 `result_available=True`，因此"原始图像"仍在选择器里），箭头、暗点、配色、域边界与深度视图与实时/重算**同一套代码** |
 | 三维面板 | 同一帧的 `SdkPacket` | `session.packet(frame)` → `Scene3DView.submit_packet`，走同一个 adapter、域掩码 latch 与有效性求交 |
 
+**裸视频的力是重算的，而且只有这一条。** 没有 `forces.csv` 时，pass 把链路对每一帧算出的力按帧
+存进结果（`FRAME_FLAG_FORCE`；Part A 第 1.1 节），曲线读它，标题写 `chart.mode_recomputed`。没有
+任何力可画时标题说明原因。
+
 **没有结果时那一行必须说清是四种里的哪一种。** `plan_image()` 只拿到 `ImageFrame`，四种状态
 因此由生产者写进帧里（`result_state`/`result_reason`），`ReplayController.result_state()` 是唯一
 的判断处；有结果时这一行根本不出现：
@@ -142,18 +146,17 @@ on_progress)`（`chain_spec_for` 从录像自己的 `session.json` 取链路，
 
 ## 15. 已知限制
 
-* 结果里没有力：力曲线始终读记录的 `forces.csv`。深度有了（第 1、11 节），但**三维面板仍只
-  拿光流**：`session.packet()` 的 `depth` 依旧是 `None`、`depth_valid` 依旧是 `False` —— 接进
-  三维会改变三维图形的构成，不在这一片里。
-* **box 的箭头画布在回放里是空的**（本片实测，非本次引入）：box 的绘制路径吃不下只有候选格
-  有限的恢复场，同一帧密流场画 24,440 px、恢复场 0 px；见 [replay-panel.md](replay-panel.md) 第 5 节。
+* **录像**的结果里没有力：力曲线读那份录像自己的 `forces.csv`。裸视频是另一回事（Part A 第 1.1
+  节）：pass 存下链路重算的力，曲线读它。深度有了（第 1、11 节），但**三维面板仍只拿光流**：
+  `session.packet()` 的 `depth` 依旧是 `None`、`depth_valid` 依旧是 `False` —— 接进三维会改变
+  三维图形的构成，不在这一片里。
 * 结果覆盖的帧是 pass 走过的那些：**结果的第一帧可能晚于录像的起点**（box 链路构造时吃掉前
   7 个解码帧，这份结果从 t=0.4162 s 开始），最后一批帧也可能早于录像的终点。游标落在这两段里
-  时，派生视图按 `frame_id_at()` 的"该时刻或之前、越界夹到端点"给帧：起点之前画的是最早那一帧
-  测量，终点之后画的是最后一帧。两段没有各自的提示，"不会静默重复最后一帧"在本片没有兑现。
-* 栅格类显示设置不生效（第 12 节）；换栅格就是重跑一遍，那是**另一个键**。
+  时，派生视图按 `frame_id_at()` 的"该时刻或之前、越界夹到端点"给帧，两段没有各自的提示。
+* 栅格类显示设置不生效（第 12 节）；换栅格就是重跑一遍，那是**另一个键**。被拒的栅格**仍按
+  结果自己的网格绘制**（帧携带 `arrow_policy`）。
 * 一个进程同时只有一遍分析在跑；采集会话运行期间不启动分析 —— 但**读结果不受这条限制**（第 10
-  节）：会话开着时面板照画缓存，只是新的那一遍要等会话停下、「从视频重算」再点一次。
+  节）：会话开着时面板照画缓存，新的那一遍要等会话停下、「从视频重算」再点一次。
 * "有没有结果"是录像的属性、不是游标的属性：`available_result()` 查的是本录像在
   `ResultLibrary` 里的那一份，第 9 节的接线之后这是常态。
 * 面板的 `failed` 把"跑挂"和"被拒跑"合成一句（原因与动作都不同：一个要修链路，一个要停会话）；
diff --git a/apps/studio/docs/replay-panel.md b/apps/studio/docs/replay-panel.md
index c033eef..9d6f7c3 100644
--- a/apps/studio/docs/replay-panel.md
+++ b/apps/studio/docs/replay-panel.md
@@ -6,8 +6,8 @@ playback semantics are owned by Part A ([replay-analysis.md](replay-analysis.md)
 ([replay-analysis-part-b.md](replay-analysis-part-b.md)).
 
 Status: Parts A and B shipped at `cf49b08`, the depth channel at `9e20fd0`, the result-aware mode
-plan and the wiring that reaches it at `1aa4543`. The cache root and the lifetime sweep are
-implemented (§Cache and export policies); the display-control separation (Part C) is not.
+plan at `1aa4543`. The cache root and the lifetime sweep are implemented; the display-control
+separation (Part C) is not.
 
 ## 1. Load a video
 
@@ -15,31 +15,35 @@ Selecting a video always gives a playable timeline, and the panel says what the
 `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.
+with its reason. What a bare video lacks is force rows *measured by a device*, and
+`session.json` metadata.
 
-Not available for a bare video: force rows (the charts are empty by construction), `session.json`
-metadata, and an analysis pass — `recording_directory()` needs a `session.json` and reports
-`playback.analysis_no_source`; the only route to numbers is rerunning the acquisition pipeline over
-the video (`on_recompute_toggled`), forward only.
+**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
+workspace, its frame index and the synthetic marker are Part A's (§1.1). One prompt asks what a
+video cannot carry: the **profile** (from the catalog, each row naming what it can do — flow /
+raw force / calibrated axes / depth / 3D), an **optional calibration** defaulting to the profile's
+declared `default_calibration`, and a **reference frame** defaulting to the first. A profile the
+SDK rejects is listed, disabled and refused with the catalog's own `start_blocked_reason()`.
+Declining keeps the old behaviour (`playback.analysis_setup_declined`), and **more than one file
+is refused** with its reason.
 
-Source: `record/playback.py`, `replay_controller.py`.
-Verify: `test_ui_smoke.py::test_a_bare_video_plays_even_though_it_is_not_a_recording`;
+Source: `analysis/bare_video.py`, `ui/video_analysis_dialog.py`, `replay_controller.py`.
+Verify: `test_bare_video_analysis.py`, `test_bare_video.py`,
 `test_replay_controller.py::test_a_bare_video_is_opened_as_a_video_and_refused_outside_the_view`.
 
 ## 2. Play and compute on the loaded video
 
 Opening a recording either serves a compatible stored result or runs one pass behind a
-progress-and-cancel surface. `on_analysis_requested` asks
-`AnalysisService.stored_result()` first — a file read, the surface showing
-`analysis.reused` — and otherwise starts `AnalysisWorker`, a plain thread whose `Progress` is
-coalesced at 0.1 s, with `AnalysisProgress` showing written/expected frames and elapsed time.
-The timeline stays in `recording` mode until the pass commits: a half-written result never
-reaches the screen.
+progress-and-cancel surface. `on_analysis_requested` asks `AnalysisService.stored_result()`
+first — a file read, the surface showing `analysis.reused` — and otherwise starts
+`AnalysisWorker`, a plain thread whose `Progress` is coalesced at 0.1 s, with
+`AnalysisProgress` showing written/expected frames and elapsed time. The timeline stays in
+`recording` mode until the pass commits: a half-written result never reaches the screen.
 
-The pass is sequential and forward-only: `_pass_frames` walks segments and frames in order, and the
-chain is stateful (`Sensor.reset()` clears the tracker). Cancelling sets an event; the result keeps
-its `INCOMPLETE` marker and default readers refuse it (Part A §7). Measured: 0.48–0.51
-wall-seconds per video-second (Part A §8) — ten minutes is ≈4.8 minutes.
+The pass is forward-only (`_pass_frames` walks segments and frames in order; the chain is
+stateful). Cancelling sets an event; the result keeps its `INCOMPLETE` marker and default
+readers refuse it (Part A §7). Measured: 0.48–0.51 wall-seconds per video-second (Part A §8).
 
 Source: `analysis/service.py`, `analysis_worker.py`, `ui/analysis_progress.py`.
 Verify: `test_replay_analysis.py::test_opening_a_recording_with_a_stored_result_runs_no_pass`,
@@ -50,14 +54,12 @@ Verify: `test_replay_analysis.py::test_opening_a_recording_with_a_stored_result_
 
 The cursor is one position for the whole panel, on the recording's own signal time: `t_rel_s`
 from `frames.csv`, the axis `ReplayEngine.position()` and `AnalysisReader.frame_at()` index by.
-Container time is never derived from it or converted into it. Measured: 33 container frames at
-30 fps are 1.100 s of video and 1.920 s of signal at 16.664 fps (Part A §5).
+Container time is never derived from it (Part A §5).
 
 Frames are addressed by the recording's own frame id, never an index: `AnalysisSession.frame`
-refuses an id the result does not hold (`AnalysisNotFoundError`), and the evidence recording's
-ids run 20…52, so an index-based path would answer with another frame's measurement. A seek
-resolves to the stored frame at or before the position — the frame sequential playback passes —
-and re-runs no pass.
+refuses an id the result does not hold, and the evidence recording's ids run 20…52, so an
+index-based path would answer with another frame's measurement. A seek resolves to the stored
+frame at or before the position — the frame sequential playback passes — and re-runs no pass.
 
 Source: `replay.py`, `replay_analysis.py`.
 Verify: `test_replay_analysis.py::test_position_is_signal_time_and_resolves_to_a_stored_frame_id`,
@@ -70,58 +72,69 @@ One cursor drives all three.
 
 | View | Data source |
 |---|---|
-| Charts | the recorded `forces.csv` (`RecordingCurveSource`); the result stores no force |
+| Charts | the recorded `forces.csv` (`RecordingCurveSource`), or — over a bare video — the result's own recomputed trace (`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
+(`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.
+
 A seek equals playing forward to that frame: the cursor resolves to one stored frame id and all
 three views are fed from it. A derived view chosen while the timeline reads the video is drawn
 from the result at the same cursor (`available_result`). Not synchronised: the 3D pane's depth
 (`AnalysisSession.packet` sets `depth=None`, `depth_valid=False`); forces (the packet carries
-`forces_valid=False` and zero, so the pane's force readout is not a measurement here); the 3D
-pane with no result, which nothing feeds; and a recompute pass, where the pipeline owns the
-timeline (`on_cursor_moved`).
+`forces_valid=False` and zero); and the 3D pane with no result. 「从视频重算」 shares
+`on_analysis_requested` with opening a recording — no separate acquisition chain owns the
+timeline.
 
 Display settings are reads: the threshold re-derives activity from the stored `magnitude`, colour
 range and idle dots live in the draw call, and a grid-moving setting is refused by name
-(`GRID_KEYS`), the frame still drawn from the recorded grid.
+(`GRID_KEYS`), the frame still drawn from the recorded grid. The recovered field can only be
+sampled on the pass's own grid, so the frame carries that policy (`ImageFrame.arrow_policy`).
 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`.
 
 ## 5. What the 2D view can show
 
 The modes come from the frame's own fields and from whether a result exists (`plan_image`,
-`result_available`): `arrows_pure` (Arrows), `arrows_stitched` (Arrows / Captured), `depth`
-(Depth map), `recorded` (Recorded image). With a result all four are offered, even on the
-recording's timeline, defaulting to `recorded`; with none, `recorded` alone plus one line naming
-*which* absence it is (`result_state`): no result yet (`panels.replay_raw_note`), a pass running
-(`panels.replay_analysis_running`), a pass failed or refused with its own reason
-(`panels.replay_analysis_failed`), or no pass possible at all — a bare video
+`result_available`): `arrows_pure`, `arrows_stitched`, `depth`, `recorded`. With a result all
+four are offered, even on the recording's timeline, defaulting to `recorded`; with none,
+`recorded` alone plus one line naming *which* absence it is (`result_state`): no result yet
+(`panels.replay_raw_note`), a pass running (`panels.replay_analysis_running`), a pass failed or
+refused with its own reason (`panels.replay_analysis_failed`), or no pass possible
 (`panels.replay_analysis_unavailable`).
 
 | Mode | Drawn from |
 |---|---|
 | recorded | the decoded `raw_*.mp4` frame (`RecordingReader.video_frame_at`) |
-| arrows / arrows-captured | the cached samples: the grid keyframe's locations plus this frame's float32 `dx`/`dy`/`magnitude` and bit-packed `active` (4,034 B/frame before the depth channel; 4,048 B/frame now) |
-| depth | a per-frame depth flag, a non-zero count and min/max; only a non-empty map adds a uint8 plane quantised over that frame's range and zlib'd at level 6 (island restriction rejected: 418 B vs 486 B on the worst frame) |
+| arrows / arrows-captured | the cached samples: the grid keyframe's locations plus this frame's float32 `dx`/`dy`/`magnitude` and bit-packed `active` (4,048 B/frame with the depth channel) |
+| depth | a per-frame depth flag, a non-zero count and min/max; only a non-empty map adds a uint8 plane quantised over that frame's range and zlib'd at level 6 (Part A §1) |
 
-Measured: the depth map is exactly all zeros on 241 of 264 frames of the eight-times clip
-(32 of 33 on the box recording) and never exceeded 336 of 84,000 pixels (0.4 %). A blank depth view
-is therefore usually correct and must be explainable: `panels.depth_empty` says the frame's depth is
-all zeros, `panels.depth_unavailable` says the frame has no depth channel at all — different facts,
-neither drawing the processed image.
-
-**A box replay's arrow canvas is empty** (pre-existing): the box style draws through the SDK's
-`orisys.util.draw_arrows`, while a replay hands it the recovered field, finite only at the stored
-candidate cells — one dense field paints 24,440 px, its recovered form 0 px, the shared painter
-1,486 px.
+A blank depth view is usually correct and must be explainable: `panels.depth_empty` says the
+frame's depth is all zeros, `panels.depth_unavailable` says the frame has no depth channel at
+all — different facts. Measured: the map is exactly all zeros on 32 of the box recording's 33
+frames (Part A §1 has the rest).
+**A box replay's arrow canvas is painted, by the shared painter.** The box style draws through
+the SDK's `orisys.util.draw_arrows`, which sweeps the dense sampling grid; a replay hands it a
+*recovered* field, finite only at the stored candidate cells. Measured on one stored box frame:
+a dense field through the SDK painter paints 24,440 px, that field in its recovered form 0 px,
+the shared painter 1,486 px (1,486–1,964 px over the result's 25 frames with arrows). So the
+painter follows **where the frame came from** — a frame read from a stored result
+(`SOURCE_ANALYSIS`/`SOURCE_REPLAY`) is drawn per sample, a live or recomputed one keeps the SDK
+path (`draw_arrow_display(shared_painter=True)`) — and the box style still owns the
+magnification and the idle-dot tint.
 
 A mode needing derived data is served from the result, never faked: with none, that view is not
-offered and the state line names the action or the reason. The state above is what an operator
-reaches by opening a recording that has a result: the cursor stays on the recording's own timeline
-and the panel opens on a derived view, the recorded one still offered — including while the
-session that recorded it is still live, because reading a result opens no chain.
-Verify: `test_image_backend.py` (the plan), `test_replay_analysis.py::test_a_derived_mode_is_served_from_the_result_even_on_the_recording_timeline`,
+offered and the state line names the action. The cursor stays on the recording's own timeline
+while the derived views are read from the result — including while the session that recorded it
+is still live, because reading a result opens no chain.
+Verify: `test_image_backend.py` (the plan and the painter routing),
+`test_bare_video_analysis.py::test_the_box_arrow_canvas_is_painted_by_the_shared_painter`,
+`test_replay_analysis.py::test_a_derived_mode_is_served_from_the_result_even_on_the_recording_timeline`,
 `::test_the_four_no_result_states_are_four_different_lines`,
 `::test_the_empty_depth_note_is_not_the_missing_depth_note`,
 `test_replay_wiring.py::test_the_operator_sees_the_cached_views_over_the_recording`,
@@ -129,35 +142,20 @@ Verify: `test_image_backend.py` (the plan), `test_replay_analysis.py::test_a_der
 
 ## Cache and export policies
 
-No rendered 2D images are cached. PNGs of the arrow and depth views would cost 180–540 MB per
-ten minutes and bake display settings into pixels, destroying the property that a threshold,
-colour or idle-dot change is a read. Drawing a frame from the cached numbers costs ≈1.4 ms, the
-idle-dot pass 37 µs (owner's bench, not reproduced here). Check:
-`::test_a_display_change_is_a_read_and_writes_no_result`, `::test_a_mode_change_writes_no_analysis`.
+No rendered 2D images are cached: a PNG would bake display settings into pixels, destroying the
+property that a threshold, colour or idle-dot change is a read. Check:
+`::test_a_display_change_is_a_read_and_writes_no_result`,
+`::test_a_mode_change_writes_no_analysis`. A backward seek cannot re-derive a frame either: the
+chain is forward-only, so it would cost a full re-run (Part A §8).
 
-Derived views cannot be computed from raw data during a scrub: the chain is stateful and
-forward-only, so a backward seek would need a full re-run at 0.48–0.51 s per video-second; the
-panel scrubs stored numbers and offers that run separately.
-
-Cache location. Results live under the OS-correct derived-data root,
-`%LOCALAPPDATA%\OrisysStudio\analysis-cache\` (`paths.analysis_cache_dir()`) — never the user's
-recording folder or the app's `outputs/`, which in the packaged build is the EXE's own directory
-and holds the recordings. The key is path-independent (`recording_identity`), so a copied
-recording finds its result; a result left under the old `<recording>/analysis` root is ignored —
-neither read nor deleted (`test_replay_analysis.py::test_a_result_under_the_old_root_is_ignored_not_migrated`).
-
-Cache lifetime. A size cap with LRU eviction (1 GiB, `DEFAULT_MAX_BYTES`), a startup sweep of
-stale and incomplete results, a manual "clear analysis cache" action, and wipe-on-exit only as an
-explicit preference that is off by default — because wiping on exit forces a full re-analysis
-(≈4.8 minutes per ten minutes) on reopen and does not protect against a crash. Implemented:
-`evict()` (incomplete first, then oldest, protecting `keep`) and `ResultCache.sweep()`, which
-clears incomplete results older than an hour and then applies the cap, called once at startup
-(`ReplayController.sweep_cache`). Not implemented: the clear action and the wipe-on-exit
-preference.
-
-Export. The deliberate way to keep a result is to export it: ≈70 MB per ten minutes, portable
-because the key ignores where the file sits. A rendered arrow or depth video belongs to export
-rather than the cache. Not implemented.
+Results live under `%LOCALAPPDATA%\OrisysStudio\analysis-cache\`
+(`paths.analysis_cache_dir()`) — never the user's recording folder or the app's `outputs/` (the
+EXE's own directory in a packaged build). The key is path-independent
+(`recording_identity`), so a copied recording finds its result; a result left under the old
+`<recording>/analysis` root is ignored, neither read nor deleted. A bare video's generated
+workspace lives under `…\video-workspaces\<video digest>\`. Implemented: a 1 GiB cap with LRU
+eviction and `ResultCache.sweep()` at startup. Not implemented: a manual clear action, the opt-in
+wipe-on-exit preference and result export (≈70 MB per ten minutes).
 
 ## Owners and status
 
@@ -165,14 +163,17 @@ rather than the cache. Not implemented.
 |---|---|---|
 | Format, cache, reader, pass | `orisys_app_shared.analysis` | shipped (`9e20fd0`, cache root and sweep now) |
 | Timeline, cursor, policy, pass thread, progress surface | `replay_analysis.py`, `replay.py`, `replay_controller.py`, `analysis_worker.py`, `ui/analysis_progress.py` | shipped; the no-result states are part of the panel's line |
-| Mode plan, drawing, window wiring | `image_backend.py`, `acquisition/arrows.py`, `app_window.py` | shipped (Part B §12 names the seams) |
-| Cache root and lifetime | `analysis/cache.py`, `paths.py`, `app_window.py` | root and startup sweep implemented; clear action and wipe-on-exit preference are not |
-| Display-control separation: rail reset as the measurement reference, a separate display baseline, the F8 view reset | `toolbar.py`, `display_prefs.py`, `app_window.py` | not started; Part B §12 records these as unchanged. The pass accepts a `reference_frame` but `_analysis_service` passes none |
+| Mode plan, drawing, window wiring | `image_backend.py`, `acquisition/arrows.py`, `app_window.py` | shipped (Part B §12); the painter is chosen by the frame's source |
+| A bare video: workspace, setup prompt, per-frame force | `analysis/bare_video.py`, `ui/video_analysis_dialog.py`, `analysis/{model,service,reader}.py`, `force/source.py` | shipped (appended `FRAME_FLAG_FORCE`, format version unchanged) |
+| Display-control separation (Part C) | `toolbar.py`, `display_prefs.py`, `app_window.py` | not started (Part B §12) |
 
 ## Not confirmed in code
 
-* The render cost (≈1.4 ms, idle dots 37 µs) and the PNG estimate (180–540 MB per ten minutes)
-  are the owner's bench, not measurements here; Part B §14's single-frame snapshots (4.2–4.9 kB)
-  suggest the estimate is high, so it should be re-measured.
+* 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.
 * The manual clear action, the wipe-on-exit preference and result export have no code in
   `orisys-app`; they are decisions.
+* 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).
diff --git a/apps/studio/docs/sensor-bundles.md b/apps/studio/docs/sensor-bundles.md
new file mode 100644
index 0000000..21f69eb
--- /dev/null
+++ b/apps/studio/docs/sensor-bundles.md
@@ -0,0 +1,59 @@
+# Sensor bundles
+
+Every sensor configuration the Studio offers is a folder under `apps/studio/config/sensors/`
+holding `sensor.json` — the processing configuration. `orisys_app_shared.sensors.bundle_catalog`
+scans that folder and the writable user root beside it, and resolves each candidate through the
+SDK's `orisys.sensors.resolve_bundle`, so the picker shows what the SDK decided rather than a
+second opinion computed in the UI.
+
+`finger/` also carries `manifest.json`, the bundle descriptor. A descriptor states the profile's
+identity and its files instead of leaving both to be inferred, which is what lets the bundle keep
+its meaning when the folder is moved or renamed.
+
+## The finger descriptor
+
+| Field | Value | Why |
+|---|---|---|
+| `schema_version` | `1` | The SDK's current descriptor schema (`CURRENT_DESCRIPTOR_SCHEMA`). |
+| `profile_id` | `orisys.finger.r01` | The processing profile this folder is: finger design revision `r01`, whose unroll map and camera scale the configuration pins. Never a product-family name. |
+| `display_name` | `Finger R01` | Shown in the picker. Excluded from the processing fingerprint. |
+| `product_family` | `finger` | What the operator calls it. `finger-mems` is a different family on a different pipeline. |
+| `processing_backend` | `uv_unroll` | The pipeline the finger actually runs: `FingerRuntime` builds a UV domain from the export's unroll map, then flow and force. |
+| `sensor_json` | `sensor.json` | The configuration, still the only place camera, tracker and contact settings live. |
+| `computational_assets.unroll_map` | `assets/30fps-0703/unroll_map_uv_s0.42.npz` | The map the chain loads. `finger_worker` derives that name for itself from the export folder and `camera.source_scale`, so the descriptor and the chain are checked against each other. Required: without it the profile fails. |
+| `assets.scene` | `scene/finger-display-1.0.0.oryscene` | The compiled package the 3D pane draws. Visualization only: a missing one never blocks processing. |
+
+Every path is relative to the bundle root, and the SDK refuses an absolute path or a `..` escape
+when it parses the descriptor. `assets/visualization/` is deliberately left out of `assets`: it is
+offline compiler input, the packaged build strips it, and nothing at runtime reads it.
+
+`sensor.json` declares `"type": "single_camera"` while the descriptor says `uv_unroll`. With a
+descriptor present the descriptor decides, and it is the truthful one — the finger path never
+builds a single-camera processor. Do not "correct" `type`: it is part of the hashed configuration
+(only `name`, `version` and `display_name` are skipped), so editing it would re-identify every
+recorded finger pass and change no number.
+
+## Compatibility keys
+
+`name`, `assets_dir` and `viz_pose` are kept beside the descriptor fields — the shape this bundle
+had before it carried a descriptor. They are relative too, so they do not weaken rename safety,
+and they keep readers that never learned about the descriptor working:
+
+| Key | Reader |
+|---|---|
+| `assets_dir` | `orisys/configs.resolve_sensor_bundle` → `resolve_sensor_asset_dir`, which `orisys.finger.exports` consults for a bundled export; `acquisition/geometry.py::describe_sensor_geometry`, the device-geometry check the 3D pane runs; `build/studio/build.ps1`, which checks the packaged copy; `orisys-sdk/examples/gui/viewer3d/presets.py`. |
+| `viz_pose` | `orisys-sdk/examples/viz/mesh_camera.py`. |
+| `name` | Nothing reads it today; it is kept because it belongs to the legacy shape. |
+
+Dropping a key means migrating those readers first, not tidying up the JSON.
+
+## Verification
+
+`apps/studio/tests/test_sensor_catalog_root.py` asserts the descriptor's fields, that every
+declared path is relative and present, that the declared map is the one the running chain derives
+for itself (the SDK's `scaled_map_cache_path`, so `_s0.42.npz` and never a neighbouring
+`_s0.4.npz`), and that a copy of the bundle under another folder name keeps its `profile_id`, its
+processing fingerprint and all of its resolved paths inside the copy.
+
+The descriptor grammar itself is owned by the SDK:
+[orisys-sdk/docs/sensor-bundles.md](../../../../orisys-sdk/docs/sensor-bundles.md).
diff --git a/apps/studio/docs/shell-lifecycle.md b/apps/studio/docs/shell-lifecycle.md
index 03652bd..7bd9ec9 100644
--- a/apps/studio/docs/shell-lifecycle.md
+++ b/apps/studio/docs/shell-lifecycle.md
@@ -9,12 +9,12 @@
 ## 1. 三个顶层视图 = 同一窗口的三套布局
 
 品牌轨上的三个导航项不打开新窗口，而是切换主窗口的布局
-（`StudioMainWindow._apply_view_preset`，预设在 `VIEW_PRESETS` / `VIEW_SPLITTER_SIZES`）：
+（`ViewLayoutController.apply_preset`，预设在 `VIEW_PRESETS` / `VIEW_SPLITTER_SIZES`）：
 
 | 视图 | 面板 | 曲线 | 比例（3D,2D,曲线,标定） |
 |---|---|---|---|
-| 实时监测 `live` | 2D 图像 + 力曲线（+ 手指三维） | 跟随实时 | `0, 360, 1080, 0` |
-| 历史回放 `replay` | 2D 图像 + 力曲线（**与实时同布局**） | 读打开的录制；未打开时仍是实时跟随 | `0, 360, 1080, 0` |
+| 实时监测 `live` | 2D 图像 + 力曲线（+ 手指三维） | 跟随实时 | `620, 300, 520, 0` |
+| 历史回放 `replay` | 2D 图像 + 力曲线（**与实时同布局**） | 读打开的录制；未打开时仍是实时跟随 | `620, 300, 520, 0` |
 | 标定 `calibration` | 标定面板 + 力曲线 | 不变 | `0, 0, 560, 880` |
 | 自由 `custom`（启动默认） | 由视图菜单决定 | 不变 | 用户在分割条上摆的位置 |
 
@@ -102,22 +102,23 @@
   摘要里的视频名**不再出现**（这正是"视频文件名残留在实时检测里"的修法）。
 - 文件菜单两条入口（`打开录制视频…` / `回放最近一次录制`）都只是切到回放视图并加载录制。
 
-### 2.1 「由视频重算」：算法复核模式
+### 2.1 「由视频重算」：与打开录像同一条分析入口
 
-`视图 → 由视频重算力值`（`act_recompute`）把曲线的来源从**录制的 CSV** 换成**把录制的视频
-重新跑一遍视觉管线**：
+`视图 → 由视频重算力值`（`act_recompute`）调用
+`ReplayController.on_analysis_requested()`——与打开录像后自动开分析是同一条路径（见
+[replay-analysis-part-b.md](replay-analysis-part-b.md) 第 10 节）：先读兼容缓存，没有再跑
+离线 pass。分析结果经 `show_analysis_packet` 喂二维与三维；有 `forces.csv` 的录制仍让图表
+读 CSV，裸视频才用结果里重算的力迹。
 
-| | 默认（关闭） | 打开 |
+| | 默认（关闭） | 打开（分析） |
 |---|---|---|
-| 曲线数据 | 录制目录的 `forces.csv`（当时测得的值） | 管线在视频上重算出的样本（进 `SessionStore`） |
-| 2D 面板 | 录制视频在游标处的那一帧 | 管线正在处理的帧 |
-| 时间轴 | 任意定位（游标、框选、总览条、播放） | 只能顺序前进（管线是有状态的），播放按钮即开始/暂停这一遍 |
-| 用途 | 看当时的记录 | 复核算法版本（mp4 有损，数值与原记录会有差异） |
+| 曲线数据 | 录制目录的 `forces.csv`（有则保留） | 同上；裸视频读结果里的力迹 |
+| 2D / 3D | 录制帧；有结果时派生模式读缓存 | 同一游标上的分析结果 packet |
+| 时间轴 | 任意定位（游标、框选、总览条、播放） | 仍可任意定位；pass 跑完前派生模式等缓存 |
+| 用途 | 看当时的记录 | 打开即分析 / 强制再跑一遍离线 pass |
 
-打开它时会立即开始这一遍（`_on_recompute_toggled` → `force_plots.set_playing(True)` →
-`_on_transport_toggled` → `_start_run`，只有一条启动路径，避免按钮与菜单各启动一次）；
-关闭时停止该遍并挂回 CSV。`_replay_owns_image()` 在这一遍运行期间为 False，2D 面板交给
-管线自己画。
+关闭开关时取消进行中的分析 pass，并挂回录制来源。Stop / Esc 停播放与分析 pass，不再为
+「重算」另开一条采集链。视图切换仍只改家具：`ViewLayoutController.apply_preset`。
 
 `apps/studio/tools/ui_snapshot.py --scene replay` 会合成一段短录制并打开它，用于人工复核
 统一后的回放布局（不写业务数据，也不需要硬件）。
diff --git a/apps/studio/docs/ui-palette.md b/apps/studio/docs/ui-palette.md
index 9278416..ac15c69 100644
--- a/apps/studio/docs/ui-palette.md
+++ b/apps/studio/docs/ui-palette.md
@@ -234,12 +234,12 @@ flow_ramp = 画布色, #6E4AD0, #FA02F3, #FF8A6B, #D8FF00
 
 ## 7. 三个顶层视图 = 同一窗口的三套布局
 
-导航不再打开对话框，而是切换主窗口的布局（`StudioMainWindow._apply_view_preset`）：
+导航不再打开对话框，而是切换主窗口的布局（`ViewLayoutController.apply_preset`）：
 
 | 视图 | 面板 | 曲线模式 | 分割比例（3D, 2D, 曲线, 标定） |
 |---|---|---|---|
-| 实时监测 | 2D 图像 + 力曲线（+ 手指三维） | 跟随实时 | `0, 360, 1080, 0` |
-| 历史回放 | 2D 图像 + 力曲线 | 读打开的录制（全程浏览） | `0, 360, 1080, 0`（与实时相同） |
+| 实时监测 | 2D 图像 + 力曲线（+ 手指三维） | 跟随实时 | `620, 300, 520, 0` |
+| 历史回放 | 2D 图像 + 力曲线 | 读打开的录制（全程浏览） | `620, 300, 520, 0`（与实时相同） |
 | 标定 | 标定面板 + 力曲线 | 不变 | `0, 0, 560, 880` |
 | 自由（`custom`，启动默认） | 由视图菜单决定 | 不变 | 用户在分割条上摆的位置 |
 
diff --git a/apps/studio/src/orisys_studio/acquire_presenter.py b/apps/studio/src/orisys_studio/acquire_presenter.py
new file mode 100644
index 0000000..a6cf638
--- /dev/null
+++ b/apps/studio/src/orisys_studio/acquire_presenter.py
@@ -0,0 +1,198 @@
+"""Present one acquisition packet onto the shared panels.
+
+The session controller owns *whether* a run is alive; this module owns what a
+live packet does to the furniture once the lifecycle has decided the session is
+still going. Calibration sampling stays here on purpose: it rides the record
+channel, so hiding the calibration panel must not stall it.
+
+The replay view's 33 ms play tick stays in :class:`ReplayController`. Ownership
+of the 2D panel is decided here once (``replay_owns_image``) and nowhere else.
+"""
+
+from __future__ import annotations
+
+import logging
+from typing import Any, Protocol
+
+import numpy as np
+from orisys_app_shared.force import select_display_forces
+from orisys_app_shared.i18n import t
+from orisys_app_shared.record.sample import to_record_sample
+from PySide6.QtCore import QObject
+
+logger = logging.getLogger(__name__)
+
+
+class AcquirePresentHost(Protocol):
+    """What the presenter needs from the shell around a live packet."""
+
+    session: Any
+    session_store: Any
+    toolbar: Any
+
+    def session_time(self, packet: Any) -> float: ...
+
+    def notify(self, text: str, ms: int = 0) -> None: ...
+
+    def update_run_enabled(self) -> None: ...
+
+    def refresh_status_rail(self) -> None: ...
+
+    def refresh_record_state(self) -> None: ...
+
+    def drain_calibration_events(self) -> None: ...
+
+    def drain_reset_events(self) -> None: ...
+
+    def render_run_image(self, packet: Any) -> None: ...
+
+    def replay_owns_image(self) -> bool: ...
+
+    def show_status(self, text: str) -> None: ...
+
+
+class AcquirePresenter(QObject):
+    """Force charts, calibration sampling, 3D advance, and the live 2D paint."""
+
+    def __init__(
+        self,
+        *,
+        host: AcquirePresentHost,
+        force_plots: Any,
+        cal_panel: Any,
+        cal_recorder: Any,
+        arrow_panel: Any,
+        mesh_panel: Any,
+        parent: QObject | None = None,
+    ) -> None:
+        super().__init__(parent)
+        self._host = host
+        self._charts = force_plots
+        self._cal_panel = cal_panel
+        self._cal_recorder = cal_recorder
+        self._arrow = arrow_panel
+        self._mesh = mesh_panel
+        self._last_plot_packet_key: tuple[int, float] | None = None
+        self._last_rendered_view_mode: str | None = None
+        self.last_display_fallback: bool | None = None
+        self.last_display_available: tuple[bool, bool, bool] | None = None
+
+    def drop_render_marker(self) -> None:
+        """A recorded frame was on the panel: the next live packet must repaint it."""
+        self._last_rendered_view_mode = None
+
+    def note_rendered_mode(self, mode: str | None) -> None:
+        """Remember the mode the 2D sink just painted (live or preview)."""
+        self._last_rendered_view_mode = None if mode is None else str(mode)
+
+    def clear_plot_marker(self) -> None:
+        """The next packet is a new sample again (pause resume / tracker reset)."""
+        self._last_plot_packet_key = None
+
+    def tick_3d(self, *, display_paused: bool) -> None:
+        """Advance the 3D pane on the session's clock. No second timer."""
+        if not display_paused:
+            self._mesh.tick()
+
+    def present(self, packet: Any, *, display_paused: bool) -> None:
+        """Paint one packet. Caller has already handled session end / errors."""
+        packet_key = (int(packet.session_id), float(packet.timestamp))
+        is_new = packet_key != self._last_plot_packet_key
+
+        if is_new and self._host.session.note_first_frame():
+            self._host.update_run_enabled()
+
+        if is_new and not display_paused:
+            self._last_plot_packet_key = packet_key
+            self._push_forces(packet)
+            self._cal_panel.set_live(
+                packet.normal_force_raw,
+                packet.shear_x_raw,
+                packet.shear_y_raw,
+            )
+
+        # Finalise calibration sampling on the UI thread once its deadline passes.
+        self._cal_recorder.tick()
+        self._cal_panel.poll_recorder()
+        self._host.drain_calibration_events()
+        self._host.drain_reset_events()
+        dropped_message = self._host.session.take_dropped_message(
+            self._host.session_store.dropped
+        )
+        if dropped_message:
+            self._host.show_status(dropped_message)
+
+        mode = self._arrow.view_mode()
+        if not display_paused and (
+            (is_new or mode != self._last_rendered_view_mode)
+            and not self._host.replay_owns_image()
+        ):
+            self._host.render_run_image(packet)
+            # ``render_run_image`` resolves the mode onto the panel; note what was
+            # actually painted so a mode-only change still repaints once.
+            self._last_rendered_view_mode = self._arrow.view_mode()
+        if is_new:
+            self._host.session.note_sample_telemetry(packet)
+            detail = self._host.session.check_capture_negotiation()
+            if detail:
+                self._host.notify(t("status.capture_slow", detail=detail))
+        self._host.refresh_status_rail()
+        self._host.refresh_record_state()
+
+    def _push_forces(self, packet: Any) -> None:
+        record = to_record_sample(packet)
+        if not record.valid:
+            self._host.session.last_sample_valid = False
+            self._host.show_status(
+                self._host.session.invalid_sample_message(record.invalid_reason)
+            )
+            return
+        display = select_display_forces(
+            units_pref=self._host.toolbar.units(),
+            sample=record,
+        )
+        if display.using_raw_fallback:
+            if not self._host.session.raw_fallback_notified:
+                self._host.session.raw_fallback_notified = True
+                self._host.notify(t("status.units_raw_fallback"))
+        else:
+            self._host.session.raw_fallback_notified = False
+        self._host.session.last_sample_valid = True
+        self.last_display_fallback = bool(display.using_raw_fallback)
+        self.last_display_available = tuple(bool(flag) for flag in display.available)
+        flow_p95 = _flow_p95(packet)
+        contact = getattr(packet, "contact", None)
+        contact_found = bool(getattr(contact, "found", False)) if contact else False
+        self._charts.push(
+            self._host.session_time(packet),
+            display.values[0],
+            display.values[1],
+            display.values[2],
+            unit=display.unit,
+            available=display.available,
+            flow_p95=flow_p95,
+            contact_found=contact_found,
+            forces_valid=bool(getattr(packet, "forces_valid", True)),
+        )
+
+
+def _flow_p95(packet: Any) -> float | None:
+    flow = getattr(packet, "flow", None)
+    if flow is None:
+        return None
+    try:
+        arr = np.asarray(flow, dtype=np.float64)
+        if arr.ndim != 3 or arr.shape[-1] != 2:
+            return None
+        mag = np.linalg.norm(arr, axis=-1)
+        mask = getattr(packet, "valid_mask", None)
+        if mask is not None:
+            m = np.asarray(mask, dtype=bool)
+            vals = mag[m & np.isfinite(mag)] if m.shape == mag.shape else mag[np.isfinite(mag)]
+        else:
+            vals = mag[np.isfinite(mag)]
+        if vals.size:
+            return float(np.percentile(vals, 95))
+    except Exception:  # noqa: BLE001
+        logger.debug("flow p95 skipped", exc_info=True)
+    return None
diff --git a/apps/studio/src/orisys_studio/app_window.py b/apps/studio/src/orisys_studio/app_window.py
index b53215b..5af5610 100644
--- a/apps/studio/src/orisys_studio/app_window.py
+++ b/apps/studio/src/orisys_studio/app_window.py
@@ -25,7 +25,6 @@ from orisys_app_shared.acquisition.image_backend import (
     plan_image,
     render_image,
 )
-from orisys_app_shared.force import select_display_forces
 from orisys_app_shared.force.calibration_recorder import CalibrationRecorder
 from orisys_app_shared.force.filters import FilterSettings
 from orisys_app_shared.force.session import SessionStore
@@ -34,7 +33,6 @@ from orisys_app_shared.logging import report_error
 from orisys_app_shared.paths import logo_path, recordings_dir, sensor_json_path
 from orisys_app_shared.prefs import save_preferences
 from orisys_app_shared.record import RecordConfig
-from orisys_app_shared.record.sample import to_record_sample
 from orisys_app_shared.theme import build_qss, clear_theme_cache, color
 from PySide6.QtCore import Qt, QTimer
 from PySide6.QtGui import QAction, QActionGroup, QIcon
@@ -49,6 +47,7 @@ from PySide6.QtWidgets import (
 )
 
 from orisys_studio import session_metadata
+from orisys_studio.acquire_presenter import AcquirePresenter
 from orisys_studio.calibration_service import CalibrationService
 from orisys_studio.display_prefs import DisplayPrefsController
 from orisys_studio.recording import RecordingCoordinator, record_config_from_prefs
@@ -74,6 +73,7 @@ from orisys_studio.ui.plot_settings_dialog import (
 )
 from orisys_studio.ui.sensor_picker import SensorPickerWidget
 from orisys_studio.ui.toolbar import ToolbarWidget
+from orisys_studio.ui.video_analysis_dialog import VideoAnalysisDialog
 from orisys_studio.view_layout import ViewLayoutController
 
 logger = logging.getLogger(__name__)
@@ -178,8 +178,6 @@ class StudioMainWindow(QMainWindow):
         self._preview_timer = QTimer(self)
         self._preview_timer.setInterval(33)
         self._preview_timer.timeout.connect(self._on_preview_tick)
-        self._last_plot_packet_key: tuple[int, float] | None = None
-        self._last_rendered_view_mode: str | None = None
         # ---- replay ---------------------------------------------------------
         # One engine for the history view: the recording reader, the cursor and
         # the asynchronous depth recomputation. It renders nothing itself; the policy
@@ -222,13 +220,11 @@ class StudioMainWindow(QMainWindow):
         #: frame that was already in flight cannot repaint the panels they paused on.
         self._display_paused = False
         self._active_calibration_id = ""
-        #: Last display-unit decision (``None`` before the first sample): the
-        #: status rail's calibration readout is derived from it, because an axis
-        #: without a newton curve is exactly an axis without calibration.
-        self._last_display_fallback: bool | None = None
-        self._last_display_available: tuple[bool, bool, bool] | None = None
         #: Last coefficients file written by the calibration panel (not applied).
         self._last_calibration_export = ""
+        #: Built once the panels exist (see below); until then the status rail
+        #: treats calibration as unknown.
+        self.acquire_presenter: AcquirePresenter | None = None
         self._depth_range_value: tuple[float, float] | None = None
         self._last_depth_frame = None
         #: The 2D domain boundary, latched for the session the way the depth range is:
@@ -364,6 +360,22 @@ class StudioMainWindow(QMainWindow):
         self.brand_bar.calibration_requested.connect(
             self.layout_ctl.on_calibration_requested
         )
+        # Replay asks for a view change or an acquire start/stop by signal: the
+        # window wires those acts, so the controller never names a private method.
+        self.replay_ctl.view_requested.connect(self.layout_ctl.apply_preset)
+        self.replay_ctl.acquire_requested.connect(self._start_run)
+        self.replay_ctl.acquire_stop_requested.connect(self._on_acquire_stop_requested)
+        # One presenter paints live packets: force charts, calibration sampling,
+        # 3D advance and the 2D sink when acquisition owns the image.
+        self.acquire_presenter = AcquirePresenter(
+            host=self,
+            force_plots=self.force_plots,
+            cal_panel=self.cal_panel,
+            cal_recorder=self.cal_recorder,
+            arrow_panel=self.arrow_panel,
+            mesh_panel=self.mesh3d_panel,
+            parent=self,
+        )
 
         self.setStatusBar(_NoticeBar())
         # The status bar carries **one-off notices** only (a recording finished, a
@@ -385,7 +397,9 @@ class StudioMainWindow(QMainWindow):
         self._restore_3d_settings()
         # Visibility and the nav highlight come from the restored view; the
         # stored splitter sizes still win at startup (``apply_sizes=False``).
-        self._apply_view_preset(self._view_preset, apply_sizes=False, persist=False)
+        self.layout_ctl.apply_preset(
+            self._view_preset, apply_sizes=False, persist=False
+        )
         self._restore_splitter_sizes()
         self._update_run_enabled()
         self.cal_panel.bind_recorder(self.cal_recorder)
@@ -511,6 +525,101 @@ class StudioMainWindow(QMainWindow):
             self._preview = RawPreviewSession()
         return self._preview
 
+    # --------------------------------------------------------- shell ports
+    # Controllers talk to these public names (see ``shell_ports``). The private
+    # methods below remain as the implementations tests and ``ui_check`` still
+    # drive; nothing here duplicates state.
+    @property
+    def running(self) -> bool:
+        return self._running
+
+    @property
+    def preview_open(self) -> bool:
+        return self._preview_open
+
+    @property
+    def session_active(self) -> bool:
+        return self._session_active
+
+    def start_acquire(self) -> None:
+        self._start_run()
+
+    def stop_acquire(self, *, reason: str = "user_stop", wait: bool = False) -> None:
+        self._stop_run(reason=reason, wait=wait)
+
+    def _on_acquire_stop_requested(self, reason: str) -> None:
+        self._stop_run(reason=str(reason or "user_stop"))
+
+    def show_frame(self, frame) -> None:
+        self._show_image_frame(frame)
+
+    def show_analysis_packet(self, packet) -> None:
+        self._show_analysis_frame(packet)
+
+    def drop_render_marker(self) -> None:
+        self._drop_render_marker()
+
+    def session_time(self, packet) -> float:
+        return self._session_time(packet)
+
+    def drain_calibration_events(self) -> None:
+        self._drain_calibration_events()
+
+    def drain_reset_events(self) -> None:
+        self._drain_reset_events()
+
+    def render_run_image(self, packet) -> None:
+        self._render_run_image(packet)
+
+    def replay_owns_image(self) -> bool:
+        return self._replay_owns_image()
+
+    def refresh_record_state(self) -> None:
+        self._refresh_record_state()
+
+    def show_status(self, text: str) -> None:
+        self.statusBar().showMessage(str(text or ""))
+
+    def notify(self, text: str, ms: int = 0) -> None:
+        if ms:
+            self._notify(text, ms)
+        else:
+            self._notify(text)
+
+    def refresh_status_rail(self) -> None:
+        self._refresh_status_rail()
+
+    def persist_prefs(self) -> None:
+        self._persist_prefs()
+
+    def update_run_enabled(self) -> None:
+        self._update_run_enabled()
+
+    def set_source_mode(self, mode: str) -> None:
+        self._set_source_mode(mode)
+
+    def set_display_unit(self, unit: str) -> None:
+        self._set_display_unit(unit)
+
+    def current_source_kind(self) -> str:
+        return self._current_source_kind()
+
+    def analysis_service(self, recording, cancelled=None, *, on_progress=None):
+        return self._analysis_service(recording, cancelled, on_progress=on_progress)
+
+    def bare_video_workspace(self, video):
+        return self._bare_video_workspace(video)
+
+    def device_geometry_provider(self):
+        return self._device_geometry_provider()
+
+    @property
+    def latest_fps(self):
+        return self._latest_fps
+
+    def repaint_live_frame(self) -> None:
+        self._repaint_live_frame()
+
     # ------------------------------------------------------- experiment record
     @property
     def _record_fps(self) -> float:
@@ -823,27 +932,38 @@ class StudioMainWindow(QMainWindow):
     def _start_playback(self) -> None:
         self.replay_ctl.start_playback()
 
-    def _pause_playback(self) -> None:
-        self.replay_ctl.pause_playback()
-
     def _on_play_shortcut(self) -> None:
         self.replay_ctl.on_play_shortcut()
 
-    def _stop_replay_activity(self) -> None:
-        self.replay_ctl.stop_activity()
-
     def _replay_owns_image(self) -> bool:
         return self.replay_ctl.owns_image()
 
-    def _can_recompute(self) -> bool:
-        return self.replay_ctl.can_recompute()
-
-    def _in_replay_view(self) -> bool:
-        return self._view_preset == "replay"
-
     def _drop_render_marker(self) -> None:
         """A recorded frame was on the panel: the next live packet must repaint it."""
-        self._last_rendered_view_mode = None
+        if self.acquire_presenter is not None:
+            self.acquire_presenter.drop_render_marker()
+
+    @property
+    def _last_display_fallback(self) -> bool | None:
+        if self.acquire_presenter is None:
+            return None
+        return self.acquire_presenter.last_display_fallback
+
+    @_last_display_fallback.setter
+    def _last_display_fallback(self, value: bool | None) -> None:
+        if self.acquire_presenter is not None:
+            self.acquire_presenter.last_display_fallback = value
+
+    @property
+    def _last_display_available(self) -> tuple[bool, bool, bool] | None:
+        if self.acquire_presenter is None:
+            return None
+        return self.acquire_presenter.last_display_available
+
+    @_last_display_available.setter
+    def _last_display_available(self, value: tuple[bool, bool, bool] | None) -> None:
+        if self.acquire_presenter is not None:
+            self.acquire_presenter.last_display_available = value
 
     @property
     def _play_timer(self):
@@ -1112,7 +1232,7 @@ class StudioMainWindow(QMainWindow):
         ``recompute`` only while a pass is actually running: the label is a claim
         about the pixels on screen, and a stale claim is worse than none.
         """
-        if self._in_replay_view():
+        if self.layout_ctl.in_replay_view():
             return "recompute" if self._recompute_running else "replay"
         return "live"
 
@@ -1145,13 +1265,6 @@ class StudioMainWindow(QMainWindow):
     def _show_finger_3d(self, enabled: bool) -> None:
         self.layout_ctl.show_finger_3d = enabled
 
-    def _apply_view_preset(
-        self, preset: str, *, apply_sizes: bool = True, persist: bool = True
-    ) -> None:
-        self.layout_ctl.apply_preset(
-            preset, apply_sizes=apply_sizes, persist=persist
-        )
-
     def _apply_panel_visibility(self) -> None:
         self.layout_ctl.apply_panel_visibility()
 
@@ -1203,11 +1316,12 @@ class StudioMainWindow(QMainWindow):
                 reason = t("toolbar.playback_disabled")
             self.toolbar.set_run_tooltip_reason(reason)
             self.toolbar.set_run_enabled(loaded or self.replay_ctl.is_playing())
-            # Stop leaves the replay, whatever it is doing: plain playback, a
-            # recompute pass, or a session the pass started. The operator must never
-            # have to work out which of those is stuck before they can stop it.
+            # Stop leaves the replay, whatever it is doing: plain playback, an
+            # analysis pass, or a leftover acquisition session. The operator must
+            # never have to work out which of those is stuck before they can stop it.
             self.toolbar.set_stop_enabled(
                 self.replay_ctl.is_playing()
+                or self.replay_ctl.analysis_running()
                 or self._recompute_running
                 or self._session_active
             )
@@ -1663,7 +1777,8 @@ class StudioMainWindow(QMainWindow):
         # shows next time is what the session will actually be given.
         for key, value in filters.as_dict().items():
             self.prefs[f"plot_{key}"] = value
-        self._last_plot_packet_key = None
+        if self.acquire_presenter is not None:
+            self.acquire_presenter.clear_plot_marker()
         self._persist_prefs()
         if not self._running and not self.recorder.is_recording:
             # Nothing is streaming: hand the choice over now, so the next session
@@ -1945,6 +2060,7 @@ class StudioMainWindow(QMainWindow):
         if self.toolbar.run_role() == "playback":
             if (
                 self.replay_ctl.is_playing()
+                or self.replay_ctl.analysis_running()
                 or self._session_active
                 or self._recompute_running
             ):
@@ -2132,15 +2248,16 @@ class StudioMainWindow(QMainWindow):
             # it for every other product.
             enabled=bool(self.prefs.get("raw_auto_zero", True)),
         )
-        self._last_plot_packet_key = None
-        self._last_rendered_view_mode = None
+        if self.acquire_presenter is not None:
+            self.acquire_presenter.clear_plot_marker()
+            self.acquire_presenter.drop_render_marker()
+            self.acquire_presenter.last_display_fallback = None
+            self.acquire_presenter.last_display_available = None
         # Fresh record channel for the new session. The calibration identity is
         # unknown until the device confirms which coefficients it loaded, so it
         # starts empty and is filled from that confirmation — a path is not a
         # version, and the same path can hold different numbers.
         self._active_calibration_id = ""
-        self._last_display_fallback = None
-        self._last_display_available = None
         self._depth_range_value = None
         self._last_depth_frame = None
         # The new session has not established a domain boundary yet; the previous
@@ -2263,30 +2380,6 @@ class StudioMainWindow(QMainWindow):
         else:
             self.statusBar().showMessage(t("status.run_stopped"))
 
-    def _stop_replay_activity(self) -> None:
-        """Stop whatever the replay view is doing. The operator's escape hatch.
-
-        Two different things can be running there — plain playback of the recorded
-        timeline, and a recompute pass over the video — and the person in front of the
-        screen should not have to work out which one is stuck before they can stop it.
-        So this stops both, clears a recomputed 3D picture, and says what it stopped.
-        Safe to press when nothing is running (it says so rather than doing nothing
-        silently, which is what made a stuck state feel stuck).
-        """
-        stopped: list[str] = []
-        if self._recompute_running or self._session_active:
-            self._stop_run(reason="user_stop")
-            stopped.append(t("toolbar.stopped_pass"))
-        if self._play_timer.isActive():
-            self._pause_playback()
-            stopped.append(t("toolbar.stopped_playback"))
-        self.mesh3d_panel.show_reference_only()
-        self._update_run_enabled()
-        if stopped:
-            self._notify(t("toolbar.stopped", what=", ".join(stopped)))
-        else:
-            self._notify(t("toolbar.nothing_to_stop"))
-
     def _on_reset(self) -> None:
         """Zero the *sensor tracker* — or, where there is no device, reset the display.
 
@@ -2316,7 +2409,8 @@ class StudioMainWindow(QMainWindow):
             # estimate stale, so the display baseline is re-learned from the samples
             # that follow. The curve history itself is kept.
             self.force_plots.request_presentation_reestimate()
-            self._last_plot_packet_key = None
+            if self.acquire_presenter is not None:
+                self.acquire_presenter.clear_plot_marker()
             self.statusBar().showMessage(t("status.reset_pending"))
         except Exception as exc:
             self.statusBar().showMessage(t("status.run_failed", error=str(exc)))
@@ -2381,7 +2475,8 @@ class StudioMainWindow(QMainWindow):
         else:
             # The next packet is a new sample again: without this the first one after a
             # resume can be swallowed as a repeat of the last key the tick saw.
-            self._last_plot_packet_key = None
+            if self.acquire_presenter is not None:
+                self.acquire_presenter.clear_plot_marker()
             self.statusBar().showMessage(t("status.resumed"))
 
     def _on_pause_action_toggled(self, paused: bool) -> None:
@@ -2421,16 +2516,15 @@ class StudioMainWindow(QMainWindow):
         self.statusBar().showMessage(t("status.view_reset"))
 
     def _on_run_tick(self) -> None:
-        # The 3D pane advances on this timer rather than one of its own: the window's
-        # refresh rate is then the only one that exists, and hiding or disabling the
-        # pane cannot leave a timer behind. It starts at most one compose on the
-        # pane's own worker and takes at most one finished frame.
-        if not self._display_paused:
-            # While paused the pane holds the frame it had. The acquisition thread has
-            # already stopped computing, so this only matters for a frame that was in
-            # flight when the operator pressed pause — which must not be the one frame
-            # they cannot see.
-            self.mesh3d_panel.tick()
+        """Session lifecycle on the 16 ms clock; painting is :class:`AcquirePresenter`.
+
+        Errors, end reasons and a stuck connect stay here — they call stop. A live
+        packet's charts, calibration sampling and 2D/3D paint live in the presenter
+        so a replay owning the image cannot be overwritten by accident.
+        """
+        presenter = self.acquire_presenter
+        if presenter is not None:
+            presenter.tick_3d(display_paused=self._display_paused)
         if self._active_worker is None:
             return
         # Record bookkeeping happens before anything that can return early: a
@@ -2473,122 +2567,9 @@ class StudioMainWindow(QMainWindow):
             self.statusBar().showMessage(t("status.connect_slow"))
 
         packet = self._active_worker.latest()
-        if packet is None:
+        if packet is None or presenter is None:
             return
-        packet_key = (int(packet.session_id), float(packet.timestamp))
-        is_new = packet_key != self._last_plot_packet_key
-
-        if is_new and self.session.note_first_frame():
-            # The phase just became ``running``, which is the session state the rail
-            # reads (the reset keys off it): ask the one owner of that rule rather
-            # than stating the enablement a second time here.
-            self._update_run_enabled()
-            # No status-bar line here: the rail's phase chip says 采集中 and the
-            # source slot names the camera, so "运行中（0）" was a second copy of
-            # the same fact that then stayed on screen for the rest of the session.
-
-        if is_new and not self._display_paused:
-            self._last_plot_packet_key = packet_key
-            # The live view consumes the *same* standardised measurement as the
-            # CSV and the session store: one conversion decides what a value
-            # means, so the chart cannot show something the record does not
-            # contain (or vice versa).
-            record = to_record_sample(packet)
-            if record.valid:
-                display = select_display_forces(
-                    units_pref=self.toolbar.units(),
-                    sample=record,
-                )
-                if display.using_raw_fallback:
-                    # Announced once per run, not once per frame: a notice that is
-                    # re-issued every 16 ms never expires, and the rail already
-                    # carries the calibration state.
-                    if not self.session.raw_fallback_notified:
-                        self.session.raw_fallback_notified = True
-                        self._notify(t("status.units_raw_fallback"))
-                else:
-                    self.session.raw_fallback_notified = False
-                self.session.last_sample_valid = True
-                self._last_display_fallback = bool(display.using_raw_fallback)
-                self._last_display_available = tuple(bool(flag) for flag in display.available)
-                flow = getattr(packet, "flow", None)
-                flow_p95 = None
-                if flow is not None:
-                    try:
-                        import numpy as np
-
-                        arr = np.asarray(flow, dtype=np.float64)
-                        if arr.ndim == 3 and arr.shape[-1] == 2:
-                            mag = np.linalg.norm(arr, axis=-1)
-                            mask = getattr(packet, "valid_mask", None)
-                            if mask is not None:
-                                m = np.asarray(mask, dtype=bool)
-                                if m.shape == mag.shape:
-                                    vals = mag[m & np.isfinite(mag)]
-                                else:
-                                    vals = mag[np.isfinite(mag)]
-                            else:
-                                vals = mag[np.isfinite(mag)]
-                            if vals.size:
-                                flow_p95 = float(np.percentile(vals, 95))
-                    except Exception:  # noqa: BLE001
-                        flow_p95 = None
-                contact = getattr(packet, "contact", None)
-                contact_found = bool(getattr(contact, "found", False)) if contact else False
-                self.force_plots.push(
-                    # Session-relative time, the same base the store and
-                    # ``forces.csv`` use. The wall clock must never reach the
-                    # buffer: it would put the live axis on a different scale.
-                    self._session_time(packet),
-                    display.values[0],
-                    display.values[1],
-                    display.values[2],
-                    unit=display.unit,
-                    available=display.available,
-                    flow_p95=flow_p95,
-                    contact_found=contact_found,
-                    forces_valid=bool(getattr(packet, "forces_valid", True)),
-                )
-            else:
-                self.session.last_sample_valid = False
-                self.statusBar().showMessage(
-                    self.session.invalid_sample_message(record.invalid_reason)
-                )
-            # The calibration panel is a *view*: sampling is driven by the
-            # record channel, so hiding the panel can no longer stall it.
-            self.cal_panel.set_live(
-                packet.normal_force_raw,
-                packet.shear_x_raw,
-                packet.shear_y_raw,
-            )
-
-        # Finalise calibration sampling on the UI thread once its deadline passes.
-        self.cal_recorder.tick()
-        self.cal_panel.poll_recorder()
-        self._drain_calibration_events()
-        self._drain_reset_events()
-        # Never let the memory bound discard data silently: one line per new batch.
-        dropped_message = self.session.take_dropped_message(self.session_store.dropped)
-        if dropped_message:
-            self.statusBar().showMessage(dropped_message)
-
-        mode = self.arrow_panel.view_mode()
-        if not self._display_paused and (
-            (is_new or mode != self._last_rendered_view_mode)
-            and not (self._replay_owns_image())
-        ):
-            self._render_run_image(packet)
-        if is_new:
-            self.session.note_sample_telemetry(packet)
-            # Once per session, as soon as the driver has confirmed its rate.
-            detail = self.session.check_capture_negotiation()
-            if detail:
-                self._notify(t("status.capture_slow", detail=detail))
-        # The rail carries the live telemetry (fps, validity, calibration) and
-        # the record strip its own numbers. Both compare before repainting, so
-        # this is safe on a 16 ms timer.
-        self._refresh_status_rail()
-        self._refresh_record_state()
+        presenter.present(packet, display_paused=self._display_paused)
 
     # ------------------------------------------------------------ depth scale
     def _depth_range(self) -> tuple[float, float] | None:
@@ -2649,21 +2630,6 @@ class StudioMainWindow(QMainWindow):
         """
         return self._domain_mask.update(frame.valid_mask)
 
-    def _replay_owns_image(self) -> bool:
-        """True while the 2D panel shows the replay, not the live camera.
-
-        Without this the live renderer overwrote the replay's frame on every
-        packet *and* on every preview tick, so a replay running next to an active
-        session (or a preview) looked as if it had opened the camera instead of
-        the recording. A recompute pass is the pipeline drawing again, so it owns
-        the panel while it runs.
-        """
-        return (
-            self._view_preset == "replay"
-            and self.replay.has_video()
-            and not self._recompute_running
-        )
-
     def _render_run_image(self, packet) -> None:
         if packet is None or self._replay_owns_image():
             return
@@ -2702,7 +2668,8 @@ class StudioMainWindow(QMainWindow):
         self.arrow_panel.set_plan(plan)
         mode = plan.resolve(self.arrow_panel.view_mode())
         self.arrow_panel.set_view_mode(mode)
-        self._last_rendered_view_mode = mode
+        if self.acquire_presenter is not None:
+            self.acquire_presenter.note_rendered_mode(mode)
         draw_style = self._draw_style()
         # The legend is decided by the same inputs as the picture: the arrow
         # magnification of this sensor's draw style, and whether this frame
@@ -2726,7 +2693,9 @@ class StudioMainWindow(QMainWindow):
             depth_range=self._depth_range(),
             canvas_bgr=hex_to_bgr(color(self._theme, "arrow_canvas", "#0B1830")),
             domain_mask=boundary,
-            arrow_policy=self._arrow_policy(),
+            # A frame read from a stored analysis result says which policy its *recovered*
+            # field can be sampled with; a live field is dense and takes the display's own.
+            arrow_policy=frame.arrow_policy or self._arrow_policy(),
             # The 2D presentation of the finger's unrolled canvas. Display only: the
             # frame's own flow/mask/image are handed over untouched, and the 3D pane is
             # not involved at all (its frame is the design export's).
@@ -2762,19 +2731,71 @@ class StudioMainWindow(QMainWindow):
         now. ``cancelled`` is the pass's cancellation event and ``on_progress`` its
         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.
         """
         from orisys_app_shared.analysis.service import AnalysisService, chain_spec_for
         from orisys_app_shared.record import RecordingReader
 
         session = RecordingReader(Path(recording)).session()
-        chain = chain_spec_for(session)
+        synthetic = dict(session.get("synthetic") or {})
+        chain = chain_spec_for(
+            session, calibration=synthetic.get("calibration") or None
+        )
         return AnalysisService(
             Path(recording),
             chain=chain,
             cancelled=cancelled,
             on_progress=on_progress,
+            store_force=bool(synthetic),
         )
 
+    # ------------------------------------------------------ bare video (T1 setup)
+    def _bare_video_workspace(self, video: Path) -> Path | None:
+        """Ask how to analyse a bare video, then generate the workspace to do it in.
+
+        The three answers a video cannot carry — the profile, the calibration and the
+        reference frame — are asked for in one prompt whose defaults come from the catalog
+        (the same catalog the rail's picker lists) and from the profile's own descriptor.
+        Declining returns ``None`` and leaves the video playing exactly as it did before;
+        an input that cannot become a workspace raises
+        :class:`~orisys_app_shared.analysis.bare_video.BareVideoError` with its reason.
+
+        The workspace is written under :func:`paths.video_workspace_dir` — the app's own
+        per-user data — and never beside the video: the frame index and the session
+        document are the app's derived data, and the folder the operator keeps footage in
+        is theirs.
+        """
+        from orisys_app_shared.analysis import bare_video
+        from orisys_app_shared.sensors import scan_sensor_catalog
+
+        facts = bare_video.probe(bare_video.resolve_video(video))
+        catalog = scan_sensor_catalog()
+        selected = self.sensor_picker.selected_entry()
+        dialog = VideoAnalysisDialog(
+            video=Path(video),
+            facts=facts,
+            catalog=catalog,
+            window=self,
+            initial_profile=selected.ref if selected is not None else "",
+            theme=self._theme,
+        )
+        if dialog.exec() != VideoAnalysisDialog.DialogCode.Accepted:
+            return None
+        setup = dialog.choice()
+        entry = dialog.entry()
+        if setup is None or entry is None:
+            return None
+        workspace = bare_video.build_workspace(
+            Path(video), profile=entry, setup=setup
+        )
+        return workspace.directory
+
     def _show_analysis_frame(self, packet) -> None:
         """Hand one stored analysis frame to the 3D pane's producer.
 
diff --git a/apps/studio/src/orisys_studio/display_prefs.py b/apps/studio/src/orisys_studio/display_prefs.py
index 6941e23..44cb0ff 100644
--- a/apps/studio/src/orisys_studio/display_prefs.py
+++ b/apps/studio/src/orisys_studio/display_prefs.py
@@ -11,18 +11,21 @@ they do to the panel) and leaves the *dialog* to the window: opening a QDialog a
 the filters to the acquisition workers is window work, and the session's filters are not a
 display preference.
 
-What it borrows from the window is named by :class:`DisplayHost` — persisting the choice,
-the rail, the filter settings the dialog shows, the latest measured rate, and a live
-repaint when the 2D view mode changes.
+What it borrows from the window is named by
+:class:`~orisys_studio.shell_ports.DisplayShell` — persisting the choice, the rail,
+the latest measured rate, and a live repaint when the 2D view mode changes. The
+filter dialog stays on the window: opening a QDialog and handing filters to the
+acquisition workers is not a display preference.
 """
 
 from __future__ import annotations
 
 import logging
-from typing import Any, Protocol
+from typing import Any
 
 from PySide6.QtCore import QObject
 
+from orisys_studio.shell_ports import DisplayShell
 from orisys_studio.ui.plot_settings_dialog import (
     DEFAULT_PLOT_DEADBAND_N,
     DEFAULT_PLOT_DEADBAND_RAW,
@@ -55,26 +58,8 @@ PLOT_DEADBAND_DEFAULTS = {
     "deadband_raw": DEFAULT_PLOT_DEADBAND_RAW,
 }
 
-
-class DisplayHost(Protocol):
-    """What the display controller needs from the window.
-
-    The names are the window's own (its transitional shims included), because the
-    window is the only implementation today.
-    """
-
-    prefs: dict
-
-    @property
-    def _latest_fps(self) -> float | None: ...
-
-    def _persist_prefs(self) -> None: ...
-
-    def _refresh_status_rail(self) -> None: ...
-
-    def _drop_render_marker(self) -> None: ...
-
-    def _repaint_live_frame(self) -> None: ...
+# Kept as an alias so older imports and tests that name ``DisplayHost`` keep working.
+DisplayHost = DisplayShell
 
 
 class DisplayPrefsController(QObject):
@@ -83,7 +68,7 @@ class DisplayPrefsController(QObject):
     def __init__(
         self,
         *,
-        host: DisplayHost,
+        host: DisplayShell,
         toolbar: Any,
         charts: Any,
         arrow_panel: Any,
@@ -153,7 +138,7 @@ class DisplayPrefsController(QObject):
         # recording being replayed), which keeps both triplets, instead of appending
         # new-unit values onto old ones.
         self._charts.set_units(unit)
-        self._host._persist_prefs()
+        self._host.persist_prefs()
 
     def on_units_changed(self, units: str) -> None:
         self.set_display_unit(
@@ -169,9 +154,9 @@ class DisplayPrefsController(QObject):
         self._host.prefs["image_view_mode"] = str(mode)
         # The next packet must repaint the panel: the frame that is on screen was drawn
         # in the previous mode.
-        self._host._drop_render_marker()
-        self._host._persist_prefs()
-        self._host._repaint_live_frame()
+        self._host.drop_render_marker()
+        self._host.persist_prefs()
+        self._host.repaint_live_frame()
 
     # --------------------------------------------------------------------- plot
     def plot_settings(self) -> dict:
@@ -212,7 +197,7 @@ class DisplayPrefsController(QObject):
         settings = self.plot_settings()
         self._charts.set_window_sec(float(settings["window_sec"]))
         self._apply_ranges(settings)
-        self._host._persist_prefs()
+        self._host.persist_prefs()
 
     def apply_plot_prefs_to_panel(self) -> None:
         """Show the stored chart range without asking anything (startup path)."""
@@ -243,7 +228,7 @@ class DisplayPrefsController(QObject):
         from orisys_studio import session_metadata
 
         return session_metadata.device_sample_rate(
-            self._host._latest_fps,
+            self._host.latest_fps,
             self._host.prefs.get("measured_fps"),
             default=self._default_sample_rate_hz,
         )
@@ -276,15 +261,15 @@ class DisplayPrefsController(QObject):
             return
         deg = self._arrow_panel.rotate_90_ccw()
         self._host.prefs["arrow_rotation_deg"] = deg
-        self._host._persist_prefs()
+        self._host.persist_prefs()
 
     # ---------------------------------------------------------------------- fps
     def on_show_fps_toggled(self, visible: bool) -> None:
         self._show_fps = bool(visible)
         self._host.prefs["show_fps"] = self._show_fps
         # FPS has one home now: the status rail.
-        self._host._refresh_status_rail()
-        self._host._persist_prefs()
+        self._host.refresh_status_rail()
+        self._host.persist_prefs()
 
     # -------------------------------------------------------------- diagnostics
     @property
@@ -308,7 +293,7 @@ class DisplayPrefsController(QObject):
         self._show_diagnostics = bool(visible)
         self._host.prefs["show_diagnostics"] = self._show_diagnostics
         self._apply_diagnostics()
-        self._host._persist_prefs()
+        self._host.persist_prefs()
 
     def _apply_diagnostics(self) -> None:
         for panel in (self._arrow_panel, self._mesh_panel):
@@ -329,7 +314,7 @@ class DisplayPrefsController(QObject):
         """
         self._raw_auto_zero = bool(enabled)
         self._host.prefs["raw_auto_zero"] = self._raw_auto_zero
-        self._host._persist_prefs()
+        self._host.persist_prefs()
         self.apply_presentation_prefs()
 
     def on_raw_auto_zero_toggled(self, enabled: bool) -> None:
diff --git a/apps/studio/src/orisys_studio/replay_controller.py b/apps/studio/src/orisys_studio/replay_controller.py
index 6d44575..c3f9c1d 100644
--- a/apps/studio/src/orisys_studio/replay_controller.py
+++ b/apps/studio/src/orisys_studio/replay_controller.py
@@ -13,10 +13,10 @@ and the window when the furniture changes.
 
 What this controller drives directly: the toolbar's replay controls, the charts (the
 timeline), the 2D panel, the 3D pane's source label, and the five replay actions. What
-it borrows from the window is named by :class:`ReplayHost` — the status line, the rail,
-the view switch, the display unit, the single 2D sink, and the run pipeline a recompute
-pass is. Those are window-level operations, so the window keeps them and this module
-states its dependence on them out loud instead of reaching into a god object.
+it borrows from the window is named by :class:`~orisys_studio.shell_ports.ReplayShell`
+— acquire-gate reads, the image sink, shell notes, and analysis support. View switches
+and acquire start/stop are signals the window wires, so this module never calls a
+window private method by name.
 """
 
 from __future__ import annotations
@@ -25,7 +25,7 @@ import logging
 import time
 from dataclasses import dataclass
 from pathlib import Path
-from typing import Any, Protocol
+from typing import Any
 
 import numpy as np
 from orisys_app_shared.acquisition.image_backend import (
@@ -40,9 +40,10 @@ from orisys_app_shared.acquisition.image_backend import (
     ImageFrame,
 )
 from orisys_app_shared.i18n import t
+from orisys_app_shared.force.source import AnalysisCurveSource
 from orisys_app_shared.paths import recordings_dir
-from PySide6.QtCore import QObject, QTimer
-from PySide6.QtWidgets import QFileDialog
+from PySide6.QtCore import QObject, QTimer, Signal
+from PySide6.QtWidgets import QFileDialog, QWidget
 
 from orisys_studio.analysis_worker import AnalysisReport, AnalysisWorker
 from orisys_studio.replay import MODE_ANALYSIS
@@ -52,6 +53,7 @@ from orisys_studio.replay_analysis import (
     ResultPolicyError,
     policy_divergence,
 )
+from orisys_studio.shell_ports import ReplayShell
 
 logger = logging.getLogger(__name__)
 
@@ -60,72 +62,8 @@ logger = logging.getLogger(__name__)
 #: recording down.
 PLAYBACK_TICK_MS = 33
 
-
-class ReplayHost(Protocol):
-    """What the replay controller needs from the window.
-
-    The names are the window's own (its transitional shims included), because the
-    window is the only implementation today. They are listed here so the boundary is
-    explicit and so a test can stand in for the window with a fake.
-    """
-
-    #: Operator preferences (the chosen video path is remembered here).
-    prefs: dict
-
-    @property
-    def _running(self) -> bool: ...
-
-    @property
-    def _preview_open(self) -> bool: ...
-
-    @property
-    def _session_active(self) -> bool: ...
-
-    def _in_replay_view(self) -> bool: ...
-
-    def _apply_view_preset(self, preset: str) -> None: ...
-
-    def _set_display_unit(self, unit: str) -> None: ...
-
-    def _set_source_mode(self, mode: str) -> None: ...
-
-    def _show_image_frame(self, frame: ImageFrame) -> None: ...
-
-    def _show_analysis_frame(self, packet: Any) -> None:
-        """Hand one stored analysis frame to the 3D pane's producer.
-
-        The pane is fed through its ordinary path (it snapshots a packet), so a replay
-        goes through the same adapter, the same domain latch and the same validity
-        intersection as a live run. The window owns the pane, so it owns this call.
-        """
-        ...
-
-    def _current_source_kind(self) -> str: ...
-
-    def _drop_render_marker(self) -> None: ...
-
-    def _notify(self, text: str, ms: int = ...) -> None: ...
-
-    def _start_run(self) -> None: ...
-
-    def _stop_run(self, *, reason: str = ..., wait: bool = ...) -> None: ...
-
-    def _update_run_enabled(self) -> None: ...
-
-    def _refresh_status_rail(self) -> None: ...
-
-    def _analysis_service(
-        self, recording: Path, cancelled: Any, *, on_progress: Any = None
-    ) -> Any:
-        """A ready-to-run ``AnalysisService`` over ``recording``.
-
-        The window owns this because the chain specification comes from the app's
-        sensor configuration (``chain_spec_for`` over the recording's session), which is
-        window-level knowledge; the controller owns *when* a pass runs and what is done
-        with its result. ``cancelled`` is the pass's cancellation event (``None`` when
-        the caller only wants to ask whether a result is already stored).
-        """
-        ...
+# Kept as an alias so older imports and tests that name ``ReplayHost`` keep working.
+ReplayHost = ReplayShell
 
 
 @dataclass
@@ -142,11 +80,18 @@ class ReplayActions:
 class ReplayController(QObject):
     """The replay view's state machine and the panels it drives."""
 
+    #: Ask the shell to show one of the top-level views (``live`` / ``replay`` / …).
+    view_requested = Signal(str)
+    #: Ask the shell to start an acquisition chain (the live recompute path).
+    acquire_requested = Signal()
+    #: Ask the shell to stop the acquisition chain. Argument is the stop reason.
+    acquire_stop_requested = Signal(str)
+
     def __init__(
         self,
         *,
         engine: Any,
-        host: ReplayHost,
+        host: ReplayShell,
         toolbar: Any,
         charts: Any,
         image_panel: Any,
@@ -170,6 +115,9 @@ class ReplayController(QObject):
         #: True while a recompute pass is running: it is a *run* over a recording, so
         #: the acquire pipeline owns the panels and the transport stops the pass.
         self._recompute_running = False
+        #: Which top-level view the layout last stated. The layout pushes this via
+        #: :meth:`set_active_view` so this controller never asks the window by name.
+        self._active_view = "custom"
         #: The stored results the timeline can read from, and the pass in flight.
         self.results = ResultLibrary()
         self._analysis_worker: AnalysisWorker | None = None
@@ -184,6 +132,11 @@ class ReplayController(QObject):
         #: Non-empty when this recording names no chain to analyse with: the key cannot be
         #: computed, so neither a cache read nor a pass is possible.
         self._analysis_no_chain = ""
+        #: The generated workspace a bare video is analysed in, once the operator has
+        #: answered the setup prompt. It is what :meth:`recording_directory` answers with
+        #: for a video that is not a recording, so every later step — the stored-result
+        #: lookup, the pass, the charts — reads it exactly as it reads a recording.
+        self._video_workspace: Path | None = None
         self._play_from = 0.0
         self._play_started_at = 0.0
         self.play_timer = QTimer(self)
@@ -192,6 +145,17 @@ class ReplayController(QObject):
         if self._progress is not None:
             self._progress.cancel_requested.connect(self.on_analysis_cancel)
 
+    def set_active_view(self, preset: str) -> None:
+        """The layout states which furniture is up. Replay only reads this flag."""
+        self._active_view = str(preset or "custom")
+
+    def in_replay_view(self) -> bool:
+        return self._active_view == "replay"
+
+    def _dialog_parent(self) -> QWidget | None:
+        parent = self.parent()
+        return parent if isinstance(parent, QWidget) else None
+
     # ------------------------------------------------------------------ wiring
     def wire(self) -> None:
         """Connect the engine and the charts. Called once, after construction."""
@@ -256,23 +220,15 @@ class ReplayController(QObject):
 
         Without this the live renderer overwrote the replay's frame on every packet
         *and* on every preview tick, so a replay running next to an active session (or
-        a preview) looked as if it had opened the camera instead of the recording. A
-        recompute pass is the pipeline drawing again, so it owns the panel while it
-        runs.
+        a preview) looked as if it had opened the camera instead of the recording.
+        Analysis results are drawn by this controller too, so an analysis pass keeps
+        ownership — it does not hand the panel back to the acquisition tick.
         """
-        return (
-            self._host._in_replay_view()
-            and self._engine.has_video()
-            and not self._recompute_running
-        )
+        return self.in_replay_view() and self._engine.has_video()
 
     # ------------------------------------------------------------------ entries
     def on_cursor_moved(self, t_rel_s: float) -> None:
-        if self._recompute_running:
-            # The recompute pass owns the timeline: its samples are arriving in
-            # order and the cursor follows them.
-            return
-        if self._host._in_replay_view() and self._engine.has_video():
+        if self.in_replay_view() and self._engine.has_video():
             self._engine.set_position(float(t_rel_s))
 
     def on_open_recording(self) -> None:
@@ -284,7 +240,7 @@ class ReplayController(QObject):
         """
         start = str(recordings_dir())
         chosen, _filter = QFileDialog.getOpenFileName(
-            self._host,
+            self._dialog_parent(),
             t("playback.open"),
             start,
             t("playback.video_filter"),
@@ -300,11 +256,11 @@ class ReplayController(QObject):
         path as the rail's button: a recorded video is something to *play*, not a
         second way to acquire.
         """
-        if self._host._running or self._host._preview_open:
+        if self._host.running or self._host.preview_open:
             return
         start = self._toolbar.video_path() or str(Path.home())
         path, _ = QFileDialog.getOpenFileName(
-            self._host,
+            self._dialog_parent(),
             t("menu.open_video"),
             start,
             t("playback.video_filter"),
@@ -337,7 +293,7 @@ class ReplayController(QObject):
         """
         if self._actions is None:
             return
-        allowed = self._host._in_replay_view()
+        allowed = self.in_replay_view()
         reason = "" if allowed else t("toolbar.replay_view_only")
         for action in (
             self._actions.open_video,
@@ -353,7 +309,7 @@ class ReplayController(QObject):
 
     def can_recompute(self) -> bool:
         """Whether 「从视频重算」 has something to read: a recording, or a video file."""
-        if not self._host._in_replay_view():
+        if not self.in_replay_view():
             return False
         if self._engine.has_video():
             return True
@@ -373,11 +329,11 @@ class ReplayController(QObject):
         that is the only way to get *numbers* out of a video that has no recording.
         """
         video = Path(video)
-        if not self._host._in_replay_view():
+        if not self.in_replay_view():
             # Defensive: the entries are disabled outside the replay view, so this only
             # happens programmatically — and refusing is better than leaving the window
             # with a video source and no replay renderer.
-            self._host._notify(t("toolbar.replay_view_only"))
+            self._host.notify(t("toolbar.replay_view_only"))
             return False
         folder = video.parent if video.is_file() else video
         if not (folder / "forces.csv").is_file():
@@ -386,34 +342,41 @@ class ReplayController(QObject):
                 self._host.prefs["video_path"] = str(video)
                 # The window's own switch, which also remembers the choice: the file
                 # menu's source selector and this path must leave the same state.
-                self._host._set_source_mode("video")
+                self._host.set_source_mode("video")
                 self.render_frame()
-                self._host._notify(t("playback.video_only_opened", name=video.name))
+                self._host.notify(t("playback.video_only_opened", name=video.name))
                 self.refresh_state()
+                # A bare video used to stop here: playable, and unanalysable. It is still
+                # playable, and now the pass can be run over it — the two files it reads are
+                # generated for it in an app-owned workspace (Part A's rules unchanged).
+                self.prepare_bare_video(video)
                 return True
             if video.is_file():
                 self._toolbar.set_video_path(str(video))
                 self._host.prefs["video_path"] = str(video)
-                self._host._set_source_mode("video")
+                self._host.set_source_mode("video")
             if not self._engine.has_video():
                 # Nothing else is on screen, so the reason belongs in the panel that
                 # would have shown the frames — not only in a status line that expires.
                 self._image_panel.clear_preview(t("playback.video_only_panel"))
             self.refresh_state()
-            self._host._notify(t("playback.not_a_recording", name=video.name))
+            self._host.notify(t("playback.not_a_recording", name=video.name))
             return False
         if not self.load_recording(folder):
             return False
         self._toolbar.set_video_path(str(video))
-        self._host._refresh_status_rail()
+        self._host.refresh_status_rail()
         return True
 
     def load_recording(self, directory: Path) -> bool:
-        if not self._host._in_replay_view():
-            self._host._apply_view_preset("replay")
+        if not self.in_replay_view():
+            self.view_requested.emit("replay")
+        # A recording is a recording: whatever workspace the previous bare video was
+        # analysed in stops being this timeline's input.
+        self._video_workspace = None
         opened = self._engine.open_recording(Path(directory))
         if not opened:
-            self._host._notify(t("playback.open_failed", error=Path(directory).name))
+            self._host.notify(t("playback.open_failed", error=Path(directory).name))
             return False
         self.refresh_state()
         # Analysis on open: serve the stored result when there is a compatible one, run
@@ -421,16 +384,66 @@ class ReplayController(QObject):
         self.on_analysis_requested()
         return True
 
+    # ------------------------------------------------------------- bare video setup
+    def prepare_bare_video(self, video: Path) -> bool:
+        """Ask how to analyse a bare video, then analyse it — in a generated workspace.
+
+        A video with no recording beside it has no ``frames.csv``, no ``session.json`` and no
+        ``forces.csv``, and the pass reads the first two. Rather than teach the pass a second
+        input shape, the two files it already expects are generated for the video in an
+        app-owned location (``analysis.bare_video``), and everything after this point is the
+        *existing* path: the stored-result lookup, the pass, the charts and the 2D canvas
+        read the workspace exactly as they read a recording.
+
+        The prompt is the one thing a recording never needed: a video does not carry the
+        profile it should be processed with, the calibration or the reference frame. That
+        question is asked **after** the video opens, so the operator is looking at the
+        footage they are answering about, and declining leaves today's behaviour — the video
+        plays, and the panel says no result is coming.
+
+        Returns whether a workspace is ready and a result was asked for.
+        """
+        from orisys_app_shared.analysis.bare_video import BareVideoError
+
+        self._video_workspace = None
+        self._clear_analysis_state()
+        if self.analysis_running():
+            self._host.notify(t("playback.analysis_busy"))
+            return False
+        try:
+            workspace = self._host.bare_video_workspace(Path(video))
+        except BareVideoError as exc:
+            # Refused before anything ran, with the input's own reason: an unreadable
+            # container, more than one file, a profile with no chain. It is state, not a
+            # status line, so the panel can say it for as long as it is true.
+            self._analysis_error = str(exc)
+            self._host.notify(str(exc))
+            self.render_frame()
+            self.refresh_state()
+            return False
+        self._clear_analysis_state()
+        if workspace is None:
+            # Declined. The video plays, and the panel says no pass was run — which is a
+            # different sentence from "no pass is possible", and the truthful one.
+            self._analysis_skip = t("playback.analysis_setup_declined")
+            self.render_frame()
+            self.refresh_state()
+            return False
+        self._video_workspace = Path(workspace)
+        self.refresh_state()
+        self.on_analysis_requested()
+        return True
+
     def open_latest_recording(self) -> None:
         """Switch to the replay view on the most recent recording."""
         from orisys_app_shared.record import list_recordings
 
-        if not self._host._in_replay_view():
-            self._host._notify(t("toolbar.replay_view_only"))
+        if not self.in_replay_view():
+            self._host.notify(t("toolbar.replay_view_only"))
             return
         found = list_recordings(recordings_dir())
         if not found:
-            self._host._notify(t("playback.none_found"))
+            self._host.notify(t("playback.none_found"))
             return
         self.load_recording(Path(found[-1]))
 
@@ -438,9 +451,12 @@ class ReplayController(QObject):
         """A recording was opened (or dropped): re-point everything that reads it."""
         self.refresh_state()
         if not opened:
+            # Nothing is open any more, so no generated workspace is this timeline's input
+            # either. It is keyed by the video, so reopening the same file finds it again.
+            self._video_workspace = None
             self.pause_playback()
             return
-        if self._host._in_replay_view():
+        if self.in_replay_view():
             self.apply_source(True)
         self.render_frame()
 
@@ -465,8 +481,8 @@ class ReplayController(QObject):
         if self._actions is not None:
             self._actions.recompute.setEnabled(self.can_recompute())
         self.sync_actions()
-        self._host._update_run_enabled()
-        self._host._refresh_status_rail()
+        self._host.update_run_enabled()
+        self._host.refresh_status_rail()
 
     # ---------------------------------------------------------------- transport
     def on_replay_position(self, position_s: float) -> None:
@@ -474,21 +490,6 @@ class ReplayController(QObject):
 
     def on_transport_toggled(self, playing: bool) -> None:
         """The rail's primary button in the replay view: play or pause."""
-        if self.recompute_active():
-            # A recompute pass is a *run*: play starts the pipeline over the
-            # video, pause stops it. It can only go forward (the chain is
-            # stateful), so playing again after the end starts from the top.
-            if playing:
-                self._recompute_running = True
-                self._host._start_run()
-            elif self._recompute_running:
-                # The flag is this controller's, so it is cleared here as well as in
-                # the session stop below: a pass that ended must not keep claiming to
-                # be running just because the stop came from the transport.
-                self._recompute_running = False
-                self._host._stop_run(reason="user_stop")
-            self._toolbar.set_run_checked(bool(playing) and self._host._running)
-            return
         if playing and self._engine.has_video():
             self.start_playback()
         else:
@@ -500,7 +501,7 @@ class ReplayController(QObject):
             # A zero-length timeline is not something to play, and silently un-checking
             # the button is how "pressing 回放 does nothing" felt to the operator.
             self._toolbar.set_run_checked(False)
-            self._host._notify(t("playback.empty_recording"))
+            self._host.notify(t("playback.empty_recording"))
             return
         position = self._engine.position()
         if position >= duration - 0.02:
@@ -514,7 +515,7 @@ class ReplayController(QObject):
         self._toolbar.refresh_labels()
         # The stop button appears with the playback: one place decides what the rail
         # offers, so it is told here rather than kept in step in two places.
-        self._host._update_run_enabled()
+        self._host.update_run_enabled()
 
     def pause_playback(self) -> None:
         if self.play_timer.isActive():
@@ -522,7 +523,7 @@ class ReplayController(QObject):
         if self._toolbar.btn_run.isChecked():
             self._toolbar.set_run_checked(False)
             self._toolbar.refresh_labels()
-        self._host._update_run_enabled()
+        self._host.update_run_enabled()
 
     def on_play_tick(self) -> None:
         """Advance the playhead from the wall clock, not from the tick count."""
@@ -543,30 +544,36 @@ class ReplayController(QObject):
         """Stop whatever the replay view is doing. The operator's escape hatch.
 
         Two different things can be running there — plain playback of the recorded
-        timeline, and a recompute pass over the video — and the person in front of the
+        timeline, and an analysis pass over the video — and the person in front of the
         screen should not have to work out which one is stuck before they can stop it.
-        So this stops both, clears a recomputed 3D picture, and says what it stopped.
+        So this stops both, clears a derived 3D picture, and says what it stopped.
         Safe to press when nothing is running (it says so rather than doing nothing
         silently, which is what made a stuck state feel stuck).
         """
         stopped: list[str] = []
-        if self._recompute_running or self._host._session_active:
+        if self.analysis_running():
+            self.cancel_analysis()
+            stopped.append(t("toolbar.stopped_pass"))
+        if self._recompute_running or self._host.session_active:
+            # Legacy live-recompute flag, plus any acquisition session left open.
             self._recompute_running = False
-            self._host._stop_run(reason="user_stop")
+            self.acquire_stop_requested.emit("user_stop")
             stopped.append(t("toolbar.stopped_pass"))
         if self.play_timer.isActive():
             self.pause_playback()
             stopped.append(t("toolbar.stopped_playback"))
         self._mesh_panel.show_reference_only()
-        self._host._update_run_enabled()
+        self._host.update_run_enabled()
         if stopped:
-            self._host._notify(t("toolbar.stopped", what=", ".join(stopped)))
+            # Deduplicate the pass label when both analysis and a leftover session stop.
+            unique = list(dict.fromkeys(stopped))
+            self._host.notify(t("toolbar.stopped", what=", ".join(unique)))
         else:
-            self._host._notify(t("toolbar.nothing_to_stop"))
+            self._host.notify(t("toolbar.nothing_to_stop"))
 
     # ---------------------------------------------------------------- recompute
     def video_segment(self) -> Path | None:
-        """The recorded video a recompute pass should read."""
+        """The recorded video an analysis pass should read."""
         reader = self._engine.reader()
         segments = sorted(reader.segments()) if reader is not None else []
         if segments:
@@ -577,60 +584,48 @@ class ReplayController(QObject):
         return None
 
     def on_recompute_toggled(self, checked: bool) -> None:
-        """Off: read the recorded CSV. On: re-run the pipeline over the video.
+        """On: the same analysis entry opening a recording uses. Off: cancel / browse.
 
-        The CSV is the session's own measurement. Re-running the vision chain over the
-        recorded (lossy) video answers a different question — "what would this algorithm
-        version say about that footage" — and it can only run *forward*, because the
-        chain is stateful, so it is a pass rather than a scrub.
+        Part B: 「从视频重算」 and the open path share ``on_analysis_requested`` — serve
+        a compatible cache, or run the offline pass. The live acquisition chain over
+        the video is gone: analysis results already feed the 2D canvas and the 3D
+        pane from one cursor (``show_analysis_packet``).
         """
         wanted = bool(checked) and self.can_recompute()
         if self._actions is not None and self._actions.recompute.isChecked() != wanted:
             self._actions.recompute.blockSignals(True)
             self._actions.recompute.setChecked(wanted)
             self._actions.recompute.blockSignals(False)
+        self._toolbar.set_recompute_checked(wanted)
         self.pause_playback()
         if wanted:
-            segment = self.video_segment()
-            if segment is None:
-                self._host._notify(t("playback.no_video"))
-                if self._actions is not None:
-                    self._actions.recompute.blockSignals(True)
-                    self._actions.recompute.setChecked(False)
-                    self._actions.recompute.blockSignals(False)
+            # A bare video may have been opened and the setup prompt declined: play-only,
+            # no workspace. 「从视频重算」 asks again — that is how numbers appear — then
+            # shares ``on_analysis_requested`` with opening a recording.
+            if self.recording_directory() is None:
+                video = self.video_segment()
+                if video is None:
+                    named = self._toolbar.video_path()
+                    video = Path(named) if named else None
+                if video is not None and Path(video).is_file() and self._engine.is_video_only():
+                    if not self.prepare_bare_video(Path(video)):
+                        self._set_recompute_checked(False)
+                    return
+                self._host.notify(t("playback.no_video"))
+                self._set_recompute_checked(False)
                 return
-            # The charts stop reading the CSV; the pipeline's own samples become the
-            # data, and the 2D panel shows what it produces. The pass starts here so
-            # the switch is not a blank chart waiting for a second click.
-            self._charts.clear_recording_source()
-            self._image_panel.set_source_kind("recompute")
-            self._toolbar.set_source_mode("video")
-            self._toolbar.set_video_path(str(segment))
-            self._host._refresh_status_rail()
-            self._recompute_running = True
-            # The 3D pane now says "recomputed", not "replayed": the pass is what feeds
-            # it, through the ordinary acquisition sink.
-            self._mesh_panel.set_source_kind(self._host._current_source_kind())
-            # Playing is what starts the pass: one path in, so the button and the menu
-            # cannot start it twice.
-            self._toolbar.set_run_checked(True)
-            self._toolbar.refresh_labels()
-            self.on_transport_toggled(True)
+            self.on_analysis_requested()
             return
+        if self.analysis_running():
+            self.cancel_analysis()
         if self._recompute_running:
-            # The flag is cleared here, not only by the session stop: it belongs to this
-            # controller, and a pass that ended must stop claiming to be running.
             self._recompute_running = False
-            self._host._stop_run(reason="user_stop")
-            # The pass is over, so the last recomputed frame must go: leaving it on
-            # screen would show a measurement nothing is producing any more.
+            self.acquire_stop_requested.emit("user_stop")
             self._mesh_panel.show_reference_only()
-        if self._host._in_replay_view():
-            self._mesh_panel.set_source_kind(self._host._current_source_kind())
-            if self._engine.is_loaded():
+        if self.in_replay_view():
+            self._mesh_panel.set_source_kind(self._host.current_source_kind())
+            if self._engine.is_loaded() or self._engine.is_video_only():
                 self.apply_source(True)
-            # A bare video has no charts to point at the recording, but it does have
-            # frames to show again now that the pass is over.
             self.render_frame()
 
     # ---------------------------------------------------------------- analysis
@@ -704,7 +699,7 @@ class ReplayController(QObject):
         policy = policy_for_settings(settings)
         if not session.serve_policy(policy):
             moved = policy_divergence(session.stored_policy(), policy)
-            self._host._notify(t("playback.analysis_grid_mismatch", keys="·".join(moved)))
+            self._host.notify(t("playback.analysis_grid_mismatch", keys="·".join(moved)))
         self._engine.redraw()
 
     def on_analysis_requested(self) -> None:
@@ -724,27 +719,27 @@ class ReplayController(QObject):
         it (:meth:`result_state`) instead of promising a pass that will not come.
         """
         if self.analysis_running():
-            self._host._notify(t("playback.analysis_busy"))
+            self._host.notify(t("playback.analysis_busy"))
             return
         recording = self.recording_directory()
         if recording is None:
             # No session metadata and no segment: nothing here can be analysed at all,
             # which is a different statement from "not analysed yet" (see ``result_state``).
             self._clear_analysis_state()
-            self._host._notify(t("playback.analysis_no_source"))
+            self._host.notify(t("playback.analysis_no_source"))
             self._set_recompute_checked(False)
             self.render_frame()
             return
         self._clear_analysis_state()
         if self._activate_stored_result(recording, notify_reuse=True):
             return
-        if self._host._running or self._host._preview_open or self._host._session_active:
+        if self._host.running or self._host.preview_open or self._host.session_active:
             # A pass opens an SDK chain in this process, and so does a session. One at a
             # time — and the working directory stays untouched while it runs. The refusal
             # is *state*, not a status line: the panel says which one it is, and
             # 「从视频重算」 starts the pass the moment the session is stopped.
             self._analysis_skip = t("analysis.blocked")
-            self._host._notify(self._analysis_skip)
+            self._host.notify(self._analysis_skip)
             self._set_recompute_checked(False)
             self.render_frame()
             return
@@ -791,10 +786,21 @@ class ReplayController(QObject):
         return RESULT_NONE, ""
 
     def recording_directory(self) -> Path | None:
-        """The recording directory an analysis pass should read."""
+        """The directory an analysis pass should read.
+
+        Three shapes, one answer: a recording's own folder, the workspace *generated* for a
+        bare video (see :meth:`prepare_bare_video`), or — for a video named in the toolbar
+        but not yet opened — a folder that happens to hold a ``session.json``. Everything
+        downstream (the stored-result lookup, the chain specification, the pass) reads this
+        one value, which is what keeps a generated workspace from needing a second code
+        path.
+        """
         directory = self._engine.directory()
         if directory is not None:
             return Path(directory)
+        workspace = self._video_workspace
+        if workspace is not None and Path(workspace).is_dir():
+            return Path(workspace)
         named = self._toolbar.video_path()
         if named:
             folder = Path(named)
@@ -815,7 +821,7 @@ class ReplayController(QObject):
         serve; whether a pass can then run is the caller's question.
         """
         try:
-            service = self._host._analysis_service(recording, None)
+            service = self._host.analysis_service(recording, None)
         except Exception as exc:  # noqa: BLE001 - a recording with no chain is not fatal
             # The recording does not say which sensor and configuration produced it, so
             # the result key cannot even be computed and no pass could be built. Recorded
@@ -868,7 +874,7 @@ class ReplayController(QObject):
             # The rail's own notification (the 3D pane's source line and the 2D footer say
             # "analysis result"), not the transient status line: this is a state, and it
             # stays true for as long as the timeline is in it.
-            self._host._refresh_status_rail()
+            self._host.refresh_status_rail()
         if self._progress is not None:
             self._progress.reused(frames=frames)
         return True
@@ -887,7 +893,7 @@ class ReplayController(QObject):
         """
         self.results.open_session(session)
         self._engine.use_recording()
-        self._charts.set_recording_source(self._engine.reader())
+        self._serve_curves(session)
         # The timeline is the recording's, so the panel is told "replay" — the same word
         # ``apply_source`` uses for an open recording. It used to be told "analysis",
         # which is not a 2D source kind at all: ``ArrowPanel`` knows live/recompute/replay
@@ -941,7 +947,7 @@ class ReplayController(QObject):
     def _start_pass(self, recording: Path) -> None:
         """Run the analysis pass on a worker thread, with progress and a cancel."""
         worker = AnalysisWorker(
-            lambda event, on_progress: self._host._analysis_service(
+            lambda event, on_progress: self._host.analysis_service(
                 recording, event, on_progress=on_progress
             ),
             parent=self,
@@ -1021,7 +1027,7 @@ class ReplayController(QObject):
             )
         # The rail states what the timeline is reading from (the source label), so a
         # completed pass says so where the state lives rather than in a line that expires.
-        self._host._refresh_status_rail()
+        self._host.refresh_status_rail()
         self.refresh_state()
 
     def on_analysis_cancel(self) -> None:
@@ -1146,8 +1152,17 @@ class ReplayController(QObject):
             # The result this frame came from is the thing that makes arrows and depth
             # drawable at all; the plan reads it to decide what to offer.
             result_available=True,
+            # ...and the field it carries is *recovered*: finite only at the candidate
+            # cells the pass recorded, so it can only be re-selected on the recorded grid.
+            # The display's own policy is the caller's for a live field, and wrong here.
+            arrow_policy=self._session_policy(),
         )
 
+    def _session_policy(self):
+        """The sample policy of the result behind the cursor, or ``None`` without one."""
+        session = self.available_result()
+        return None if session is None else session.paint_policy()
+
     def render_frame(self) -> None:
         """Draw what the 2D panel should show for the current replay cursor.
 
@@ -1171,7 +1186,7 @@ class ReplayController(QObject):
         Nothing here writes anything: a display change reaches this method through the
         engine's ``redraw()`` and rebuilds the picture from the same stored frame.
         """
-        if not self._host._in_replay_view() or not self._engine.has_video():
+        if not self.in_replay_view() or not self._engine.has_video():
             return
         if self._recompute_running:
             # The pipeline is drawing its own frames (see ``owns_image``).
@@ -1194,7 +1209,7 @@ class ReplayController(QObject):
             else:
                 frame = None
             if frame is not None:
-                self._host._show_image_frame(
+                self._host.show_frame(
                     self._analysis_image_frame(
                         frame,
                         source=SOURCE_ANALYSIS if self.analysis_active() else SOURCE_REPLAY,
@@ -1202,7 +1217,7 @@ class ReplayController(QObject):
                 )
                 # The same frame, in the shape the 3D pane's producer consumes: one
                 # cursor, two figures, one frame id.
-                self._host._show_analysis_frame(session.packet(frame))
+                self._host.show_analysis_packet(session.packet(frame))
                 return
         image = self._engine.video_frame_bgr()
         if image is None:
@@ -1213,7 +1228,7 @@ class ReplayController(QObject):
         # that is coming, one that failed or was refused (with its reason), and a frame
         # no pass can serve are not the same news as "nothing has run yet".
         state, reason = self.result_state()
-        self._host._show_image_frame(
+        self._host.show_frame(
             ImageFrame(
                 image,
                 source=SOURCE_REPLAY,
@@ -1239,22 +1254,82 @@ class ReplayController(QObject):
             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)
+            self._host.set_display_unit(unit)
             if unit != wanted:
-                self._host._notify(t("status.units_raw_fallback"))
+                self._host.notify(t("status.units_raw_fallback"))
             self._charts.show_all()
             self._image_panel.set_source_kind("replay")
             return
+        if active and self._engine.is_video_only():
+            # A bare video has no ``forces.csv`` at all. The only force there can be is the
+            # analysis pass's own recomputation, stored inside the result — so the charts
+            # read that, or state which thing has to happen before they can.
+            self._serve_curves()
+            self._image_panel.set_source_kind("replay")
+            return
         if self._charts.is_recording_source():
             self._charts.clear_recording_source()
         self._charts.follow_latest()
         self._image_panel.set_source_kind("live")
         # The panel held a recorded frame: the next live packet must repaint it, so the
         # "already rendered" marker is dropped.
-        self._host._drop_render_marker()
-        if not self._host._running and not self._host._preview_open:
+        self._host.drop_render_marker()
+        if not self._host.running and not self._host.preview_open:
             self._image_panel.clear_preview(t("panels.arrow_empty"))
 
+    def _serve_curves(self, session: AnalysisSession | None = None) -> str:
+        """Point the charts at the force trace this timeline really has, and label it.
+
+        Two sources are possible and they are **different measurements of the same
+        footage**, so the panel gets a different name for each rather than one "replay":
+
+        * ``recorded`` — a recording's own ``forces.csv``, written while the device was in
+          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.
+
+        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
+        chain produced no force for this footage at all (a finger chain answers with ``NaN``
+        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()
+        if session is None:
+            self._charts.set_curve_source(
+                None, reason=t("chart.trace_not_analysed")
+            )
+            return "none"
+        source = AnalysisCurveSource(session.reader)
+        first, last = source.extent()
+        if last > first:
+            unit = self._video_unit(source)
+            source.unit = unit
+            self._engine.set_unit(unit)
+            self._host.set_display_unit(unit)
+            self._charts.set_curve_source(source)
+            self._charts.show_all()
+            return "recomputed"
+        self._charts.set_curve_source(None, reason=t("chart.trace_no_force"))
+        return "none"
+
+    def _video_unit(self, source: AnalysisCurveSource) -> str:
+        """The unit a recomputed trace can be shown in: the operator's, when it has one.
+
+        The same rule :meth:`unit_for` applies to a recording — newton only when there is
+        something to show in newtons — over the result's own force instead of a CSV.
+        """
+        wanted = "N" if self._charts.unit() == "N" else "raw"
+        if wanted == "N" and not source.unit_available("N"):
+            self._host.notify(t("status.units_raw_fallback"))
+            return "raw"
+        return wanted
+
     def unit_for(self, reader: Any) -> str:
         """The unit a recording can be shown in: raw unless it has newtons.
 
diff --git a/apps/studio/src/orisys_studio/shell_ports.py b/apps/studio/src/orisys_studio/shell_ports.py
new file mode 100644
index 0000000..d8ed436
--- /dev/null
+++ b/apps/studio/src/orisys_studio/shell_ports.py
@@ -0,0 +1,119 @@
+"""Named ports the shell controllers use instead of window private methods.
+
+Views and data sources are different things: a recompute pass can be active while
+the operator is looking at the replay furniture, and the picture then comes from
+the acquisition session. These ports are named for that responsibility, not for
+the three product views.
+
+* :class:`AcquireGate` — whether a chain can start, and (for non-signal callers)
+  how to start or stop one.
+* :class:`ImageSink` — the single place a frame reaches the 2D panel / 3D producer.
+* :class:`ShellNotes` — notices, the status rail, preferences, and source/unit
+  bookkeeping that every controller needs.
+* :class:`AnalysisSupport` — building an analysis pass and a bare-video workspace.
+
+Replay emits ``view_requested`` / ``acquire_requested`` / ``acquire_stop_requested``
+so the window wires those acts; the ports below are what it *reads* and what it
+hands a finished picture to.
+"""
+
+from __future__ import annotations
+
+from pathlib import Path
+from typing import Any, Protocol
+
+from orisys_app_shared.acquisition.image_backend import ImageFrame
+
+
+class AcquireGate(Protocol):
+    """Whether a processing chain may open in this process."""
+
+    @property
+    def running(self) -> bool: ...
+
+    @property
+    def preview_open(self) -> bool: ...
+
+    @property
+    def session_active(self) -> bool: ...
+
+    def start_acquire(self) -> None: ...
+
+    def stop_acquire(self, *, reason: str = "user_stop", wait: bool = False) -> None: ...
+
+
+class ImageSink(Protocol):
+    """The one exit that paints a frame onto the shared panels."""
+
+    def show_frame(self, frame: ImageFrame) -> None: ...
+
+    def show_analysis_packet(self, packet: Any) -> None: ...
+
+    def drop_render_marker(self) -> None: ...
+
+
+class ShellNotes(Protocol):
+    """Notices, the rail, preferences, and source/unit bookkeeping."""
+
+    prefs: dict
+
+    def notify(self, text: str, ms: int = 0) -> None: ...
+
+    def refresh_status_rail(self) -> None: ...
+
+    def persist_prefs(self) -> None: ...
+
+    def update_run_enabled(self) -> None: ...
+
+    def set_source_mode(self, mode: str) -> None: ...
+
+    def set_display_unit(self, unit: str) -> None: ...
+
+    def current_source_kind(self) -> str: ...
+
+
+class AnalysisSupport(Protocol):
+    """How a replay builds an analysis pass or a bare-video workspace."""
+
+    def analysis_service(
+        self, recording: Path, cancelled: Any = None, *, on_progress: Any = None
+    ) -> Any: ...
+
+    def bare_video_workspace(self, video: Path) -> Path | None: ...
+
+
+class LayoutShell(Protocol):
+    """What the layout controller needs from the window."""
+
+    prefs: dict
+
+    def persist_prefs(self) -> None: ...
+
+    def update_run_enabled(self) -> None: ...
+
+    def refresh_status_rail(self) -> None: ...
+
+    def current_source_kind(self) -> str: ...
+
+    def device_geometry_provider(self) -> Any: ...
+
+
+class DisplayShell(Protocol):
+    """What the display-preferences controller needs from the window."""
+
+    prefs: dict
+
+    @property
+    def latest_fps(self) -> float | None: ...
+
+    def persist_prefs(self) -> None: ...
+
+    def refresh_status_rail(self) -> None: ...
+
+    def drop_render_marker(self) -> None: ...
+
+    def repaint_live_frame(self) -> None: ...
+
+
+class ReplayShell(AcquireGate, ImageSink, ShellNotes, AnalysisSupport):
+    """Combined host a replay controller talks to (usually the main window)."""
diff --git a/apps/studio/src/orisys_studio/ui/sensor_dialog.py b/apps/studio/src/orisys_studio/ui/sensor_dialog.py
index b487bb3..dc5e80a 100644
--- a/apps/studio/src/orisys_studio/ui/sensor_dialog.py
+++ b/apps/studio/src/orisys_studio/ui/sensor_dialog.py
@@ -18,6 +18,11 @@ from datetime import datetime
 from pathlib import Path
 
 from orisys_app_shared.i18n import t
+from orisys_app_shared.sensors import (
+    SHAPE_COMPATIBILITY,
+    SHAPE_DESCRIPTOR,
+    SHAPE_UNREADABLE,
+)
 from PySide6.QtWidgets import (
     QDialog,
     QFrame,
@@ -29,6 +34,14 @@ from PySide6.QtWidgets import (
 
 from orisys_studio.ui.fit_text import ShrinkableLabel
 
+#: How the catalog's shape identifiers read here. One literal key per kind, so the locale scan
+#: sees them and a new kind is a visible fallback rather than a printed identifier.
+_SHAPE_KEYS: dict[str, str] = {
+    SHAPE_DESCRIPTOR: "sensor.catalog_shape_descriptor",
+    SHAPE_COMPATIBILITY: "sensor.catalog_shape_compatibility",
+    SHAPE_UNREADABLE: "sensor.catalog_shape_unreadable",
+}
+
 
 class SensorDialog(QDialog):
     """Sensor type / config picker plus the calibration facts that follow it."""
@@ -190,8 +203,10 @@ class SensorDialog(QDialog):
     def _refresh_profile(self) -> None:
         """State the selected catalog entry, and the reason when it cannot be started.
 
-        Read from the picker rather than re-derived here, so the window and the dialog can never
-        say two different things about one bundle.
+        This is the surface that keeps the facts the picker row no longer carries: the identity
+        the SDK assigned, how the bundle was read and its validation. It is read from the picker
+        rather than re-derived here, so the window and the dialog can never say two different
+        things about one bundle.
         """
         read_entry = getattr(self.picker, "selected_entry", None)
         entry = read_entry() if callable(read_entry) else None
@@ -201,8 +216,8 @@ class SensorDialog(QDialog):
             return
         line = t(
             "sensor.catalog_profile",
-            family=entry.product_family or t("sensor.family_unidentified"),
             profile_id=entry.profile_id or entry.folder,
+            shape=t(_SHAPE_KEYS.get(entry.shape, _SHAPE_KEYS[SHAPE_UNREADABLE])),
             origin=entry.origin,
             state=entry.state,
         )
diff --git a/apps/studio/src/orisys_studio/ui/sensor_picker.py b/apps/studio/src/orisys_studio/ui/sensor_picker.py
index b68fa53..56376f3 100644
--- a/apps/studio/src/orisys_studio/ui/sensor_picker.py
+++ b/apps/studio/src/orisys_studio/ui/sensor_picker.py
@@ -9,9 +9,10 @@ own labels and tooltips instead of a bare "配置" combo.
 Both combos are filled from the configuration catalog
 (:mod:`orisys_app_shared.sensors`), not from a hard-coded product list: the type
 combo offers the families bundles actually exist for, and the config combo offers
-the catalog's entries for the chosen family — each labelled with its profile,
-origin and the SDK's own verdict. An entry the SDK rejects stays listed, because
-that is how its reason reaches the operator, and
+the catalog's entries for the chosen family — each labelled with what it is, where
+it came from and what the calibration selection gives, so the choice is between
+products and outcomes rather than between ``profile_id`` strings. An entry the SDK
+rejects stays listed, because that is how its reason reaches the operator, and
 :meth:`SensorPickerWidget.start_blocked_reason` states why the current selection
 must not be started (see also :meth:`selected_entry`).
 """
@@ -238,10 +239,11 @@ def _family_label(family: str) -> str:
 
 
 def _entry_label(entry: CatalogEntry) -> str:
-    """One combo item: the catalog's label with its family group named in this locale.
+    """One combo item: the catalog's operator label, with nothing internal in it.
 
-    The catalog's own label is the data form (and is what a log or a test should compare); the
-    internal marker for "no product family" is replaced here, where translating belongs, so an
-    operator never reads a sentinel.
+    The catalog names an entry by its display name, so the internal marker for "no product
+    family" cannot reach the row today; it is still substituted here because a sentinel is
+    never something an operator should read, and the item text is the one place it could
+    surface if an entry ever had to fall back to its family.
     """
     return entry.label().replace(FAMILY_UNIDENTIFIED, t("sensor.family_unidentified"))
diff --git a/apps/studio/src/orisys_studio/view_layout.py b/apps/studio/src/orisys_studio/view_layout.py
index 5b89b85..53a0a50 100644
--- a/apps/studio/src/orisys_studio/view_layout.py
+++ b/apps/studio/src/orisys_studio/view_layout.py
@@ -11,42 +11,27 @@ What the controller owns: the active preset (``view_preset``), whether the calib
 panel is shown (``show_cal``) and whether the 3D pane is on (``show_finger_3d``). Its
 initial values come from the preferences, so the window does not keep a second copy.
 
-What it borrows from the window is named by :class:`LayoutHost` — persisting the choice,
-the run button's state, the rail, the arrow rotation that follows the sensor, and the
-source kind the 3D pane should claim. It drives the panels and the focus of the session's
-view directly, and it tells the replay controller that the view changed, because leaving
-the replay view is what hands the charts back to the live session.
+What it borrows from the window is named by :class:`~orisys_studio.shell_ports.LayoutShell`
+— persisting the choice, the run button's state, the rail, and the source kind the 3D
+pane should claim. It drives the panels directly, and it tells the replay controller
+which view is active, because leaving the replay view is what hands the charts back to
+the live session.
 """
 
 from __future__ import annotations
 
 import logging
 from dataclasses import dataclass
-from typing import Any, Protocol
+from typing import Any
 
 from PySide6.QtCore import QObject
 
+from orisys_studio.shell_ports import LayoutShell
+
 logger = logging.getLogger(__name__)
 
-
-class LayoutHost(Protocol):
-    """What the layout controller needs from the window.
-
-    The names are the window's own (its transitional shims included), because the
-    window is the only implementation today.
-    """
-
-    prefs: dict
-
-    def _persist_prefs(self) -> None: ...
-
-    def _update_run_enabled(self) -> None: ...
-
-    def _refresh_status_rail(self) -> None: ...
-
-    def _current_source_kind(self) -> str: ...
-
-    def _device_geometry_provider(self): ...
+# Kept as an alias so older imports and tests that name ``LayoutHost`` keep working.
+LayoutHost = LayoutShell
 
 
 @dataclass(frozen=True)
@@ -64,7 +49,7 @@ class ViewLayoutController(QObject):
     def __init__(
         self,
         *,
-        host: LayoutHost,
+        host: LayoutShell,
         splitter: Any,
         mesh_panel: Any,
         image_panel: Any,
@@ -198,7 +183,7 @@ class ViewLayoutController(QObject):
         self._mesh_panel.setVisible(show_3d)
         # Where the field comes from: a live view acquires it, a replay has none
         # stored and only a recompute pass produces one.
-        self._mesh_panel.set_source_kind(self._host._current_source_kind())
+        self._mesh_panel.set_source_kind(self._host.current_source_kind())
         self._image_panel.setVisible(show_arrow)
         self._charts.setVisible(True)
         self._cal_panel.setVisible(show_cal)
@@ -286,6 +271,12 @@ class ViewLayoutController(QObject):
         self.apply_panel_visibility()
         if apply_sizes and preset in self._splitter_sizes:
             self._splitter.setSizes(self.splitter_sizes_for(preset))
+        # Replay asks "am I in the replay view?" without reaching back into the window.
+        # Stated *before* apply_source / on_recompute_toggled: turning recompute off
+        # while still marked as replay would re-attach the recording to the charts.
+        set_view = getattr(self._replay, "set_active_view", None)
+        if callable(set_view):
+            set_view(preset)
         if preset == "replay":
             # History browsing is the point of this view: the charts read the open
             # recording, and the chart cursor is its timeline. Without a recording the
@@ -300,10 +291,10 @@ class ViewLayoutController(QObject):
         self._brand_bar.set_active_view(preset if preset != "custom" else None)
         self.sync_view_checks()
         self._replay.sync_actions()
-        self._host._update_run_enabled()
-        self._host._refresh_status_rail()
+        self._host.update_run_enabled()
+        self._host.refresh_status_rail()
         if persist:
-            self._host._persist_prefs()
+            self._host.persist_prefs()
 
     def on_live_requested(self) -> None:
         self.apply_preset("live")
@@ -330,8 +321,11 @@ class ViewLayoutController(QObject):
         self._host.prefs["view_preset"] = "live"
         self._host.prefs["show_cal_panel"] = False
         self.apply_panel_visibility()
+        set_view = getattr(self._replay, "set_active_view", None)
+        if callable(set_view):
+            set_view("live")
         self._brand_bar.set_active_view("live")
-        self._host._persist_prefs()
+        self._host.persist_prefs()
 
     def on_finger_3d_toggled(self, visible: bool) -> None:
         if self._picker.sensor_type() != "finger":
@@ -339,7 +333,7 @@ class ViewLayoutController(QObject):
         self._show_finger_3d = bool(visible)
         self._host.prefs["show_finger_3d"] = self._show_finger_3d
         self.apply_panel_visibility()
-        self._host._persist_prefs()
+        self._host.persist_prefs()
 
     def on_3d_pane_toggled(self, enabled: bool) -> None:
         """The pane's own switch. Same state as the View menu entry, one owner.
@@ -353,14 +347,14 @@ class ViewLayoutController(QObject):
         self._show_finger_3d = bool(enabled)
         self._host.prefs["show_finger_3d"] = self._show_finger_3d
         self.apply_panel_visibility()
-        self._host._persist_prefs()
+        self._host.persist_prefs()
 
     def set_settings_expanded(self, expanded: bool, *, persist: bool = True) -> None:
         self._toolbar.set_settings_expanded(bool(expanded))
         self._host.prefs["settings_expanded"] = bool(expanded)
         self.sync_settings_action()
         if persist:
-            self._host._persist_prefs()
+            self._host.persist_prefs()
 
     def on_settings_toggled(self, expanded: bool) -> None:
         self.set_settings_expanded(expanded)
@@ -387,7 +381,7 @@ class ViewLayoutController(QObject):
         self._mesh_panel.set_keys(resolve_scene_keys(self._host.prefs))
         self._mesh_panel.set_sensor(
             self._picker.sensor_type(),
-            expected_provider=self._host._device_geometry_provider(),
+            expected_provider=self._host.device_geometry_provider(),
             package_override=self._host.prefs.get("scene3d_package"),
         )
 
diff --git a/apps/studio/tests/test_display_prefs.py b/apps/studio/tests/test_display_prefs.py
index f5358ff..30b5f73 100644
--- a/apps/studio/tests/test_display_prefs.py
+++ b/apps/studio/tests/test_display_prefs.py
@@ -123,18 +123,35 @@ class _Host:
         self.rail_updates = 0
         self.markers = 0
         self.repaints = 0
-        self._latest_fps = latest_fps
+        self._latest_fps_value = latest_fps
 
-    def _persist_prefs(self) -> None:
+    @property
+    def latest_fps(self):
+        return self._latest_fps_value
+
+    @latest_fps.setter
+    def latest_fps(self, value) -> None:
+        self._latest_fps_value = value
+
+    # compatibility for tests that still assign ``_latest_fps``
+    @property
+    def _latest_fps(self):
+        return self._latest_fps_value
+
+    @_latest_fps.setter
+    def _latest_fps(self, value) -> None:
+        self._latest_fps_value = value
+
+    def persist_prefs(self) -> None:
         self.persisted += 1
 
-    def _refresh_status_rail(self) -> None:
+    def refresh_status_rail(self) -> None:
         self.rail_updates += 1
 
-    def _drop_render_marker(self) -> None:
+    def drop_render_marker(self) -> None:
         self.markers += 1
 
-    def _repaint_live_frame(self) -> None:
+    def repaint_live_frame(self) -> None:
         self.repaints += 1
 
 
diff --git a/apps/studio/tests/test_replay_controller.py b/apps/studio/tests/test_replay_controller.py
index 8c01a68..3b4a08f 100644
--- a/apps/studio/tests/test_replay_controller.py
+++ b/apps/studio/tests/test_replay_controller.py
@@ -165,11 +165,12 @@ class _Host:
     def __init__(self, *, view: str = "replay") -> None:
         self.prefs: dict = {}
         self.view = view
-        self._running = False
-        self._preview_open = False
-        self._session_active = False
+        self._running_flag = False
+        self._preview_open_flag = False
+        self._session_active_flag = False
         self.notes: list[str] = []
         self.frames: list = []
+        self.analysis_packets: list = []
         self.presets: list[str] = []
         self.units: list[str] = []
         self.source_modes: list[str] = []
@@ -178,46 +179,105 @@ class _Host:
         self.run_updates = 0
         self.rail_updates = 0
         self.markers = 0
+        #: What the setup prompt answers for a bare video: a workspace directory, or
+        #: ``None`` for "the operator declined". The window builds a real dialog; a fake
+        #: has no dialog, so the answer is the field a test sets.
+        self.workspace = None
+        self.workspace_requests: list = []
 
-    # reads
-    def _in_replay_view(self) -> bool:
-        return self.view == "replay"
+    # AcquireGate reads (legacy private names kept as writeable fields for tests)
+    @property
+    def running(self) -> bool:
+        return self._running_flag
 
-    def _current_source_kind(self) -> str:
+    @running.setter
+    def running(self, value: bool) -> None:
+        self._running_flag = bool(value)
+
+    @property
+    def preview_open(self) -> bool:
+        return self._preview_open_flag
+
+    @preview_open.setter
+    def preview_open(self, value: bool) -> None:
+        self._preview_open_flag = bool(value)
+
+    @property
+    def session_active(self) -> bool:
+        return self._session_active_flag
+
+    @session_active.setter
+    def session_active(self, value: bool) -> None:
+        self._session_active_flag = bool(value)
+
+    # compatibility for tests that still assign ``_running`` / friends
+    @property
+    def _running(self) -> bool:
+        return self._running_flag
+
+    @_running.setter
+    def _running(self, value: bool) -> None:
+        self._running_flag = bool(value)
+
+    @property
+    def _preview_open(self) -> bool:
+        return self._preview_open_flag
+
+    @_preview_open.setter
+    def _preview_open(self, value: bool) -> None:
+        self._preview_open_flag = bool(value)
+
+    @property
+    def _session_active(self) -> bool:
+        return self._session_active_flag
+
+    @_session_active.setter
+    def _session_active(self, value: bool) -> None:
+        self._session_active_flag = bool(value)
+
+    def current_source_kind(self) -> str:
         return "recompute"
 
-    # writes
-    def _apply_view_preset(self, preset: str) -> None:
-        self.presets.append(preset)
-        self.view = preset
+    def bare_video_workspace(self, video):
+        self.workspace_requests.append(video)
+        return self.workspace
 
-    def _set_display_unit(self, unit: str) -> None:
+    def analysis_service(self, recording, cancelled=None, *, on_progress=None):
+        raise AssertionError("the test did not provide an analysis service")
+
+    def set_display_unit(self, unit: str) -> None:
         self.units.append(unit)
 
-    def _set_source_mode(self, mode: str) -> None:
+    def set_source_mode(self, mode: str) -> None:
         self.source_modes.append(mode)
 
-    def _show_image_frame(self, frame) -> None:
+    def show_frame(self, frame) -> None:
         self.frames.append(frame)
 
-    def _drop_render_marker(self) -> None:
+    def show_analysis_packet(self, packet) -> None:
+        self.analysis_packets.append(packet)
+
+    def drop_render_marker(self) -> None:
         self.markers += 1
 
-    def _notify(self, text: str, ms: int = 0) -> None:
+    def notify(self, text: str, ms: int = 0) -> None:
         self.notes.append(str(text))
 
-    def _start_run(self) -> None:
+    def start_acquire(self) -> None:
         self.started += 1
 
-    def _stop_run(self, *, reason: str = "user_stop", wait: bool = False) -> None:
+    def stop_acquire(self, *, reason: str = "user_stop", wait: bool = False) -> None:
         self.stopped.append(reason)
 
-    def _update_run_enabled(self) -> None:
+    def update_run_enabled(self) -> None:
         self.run_updates += 1
 
-    def _refresh_status_rail(self) -> None:
+    def refresh_status_rail(self) -> None:
         self.rail_updates += 1
 
+    def persist_prefs(self) -> None:
+        pass
+
 
 class _Reader:
     def __init__(self, *, newtons=None) -> None:
@@ -276,6 +336,10 @@ class _Engine:
     def reader(self):
         return self._reader
 
+    def directory(self):
+        """No recording directory: a stub opens a video, not a recorded session."""
+        return None
+
     def video_path(self):
         return self._path
 
@@ -309,6 +373,23 @@ class _Engine:
         return self.accept
 
 
+def _wire_replay(controller, host):
+    """Signals replace private start/stop/view calls on the shell."""
+    controller.view_requested.connect(
+        lambda preset: (
+            host.presets.append(preset),
+            setattr(host, "view", preset),
+            controller.set_active_view(preset),
+        )
+    )
+    controller.acquire_requested.connect(host.start_acquire)
+    controller.acquire_stop_requested.connect(
+        lambda reason: host.stop_acquire(reason=reason)
+    )
+    controller.set_active_view(host.view)
+    return controller
+
+
 def _controller(**kwargs):
     """A controller wired to fakes; returns ``(controller, host, engine, parts)``."""
     engine = kwargs.pop("engine", None) or _Engine()
@@ -317,13 +398,16 @@ def _controller(**kwargs):
     charts = kwargs.pop("charts", None) or _Charts()
     panel = kwargs.pop("image_panel", None) or _ImagePanel()
     mesh = kwargs.pop("mesh_panel", None) or _Mesh()
-    controller = ReplayController(
-        engine=engine,
-        host=host,
-        toolbar=toolbar,
-        charts=charts,
-        image_panel=panel,
-        mesh_panel=mesh,
+    controller = _wire_replay(
+        ReplayController(
+            engine=engine,
+            host=host,
+            toolbar=toolbar,
+            charts=charts,
+            image_panel=panel,
+            mesh_panel=mesh,
+        ),
+        host,
     )
     actions = {
         "open_video": _Action(),
@@ -380,20 +464,19 @@ def test_the_playhead_follows_the_wall_clock_and_stops_at_the_end(qt_app, monkey
     assert not controller.is_playing(), "the transport kept running past the end"
 
 
-def test_the_transport_runs_a_recompute_pass_instead_of_playing(qt_app):
-    """With the recompute switch on, play starts the *pipeline*, not the cursor."""
+def test_the_transport_plays_even_when_the_recompute_switch_is_on(qt_app):
+    """Analysis is a separate pass; the rail's play button always moves the cursor."""
     engine = _Engine(duration=1.0, has_video=True)
     controller, host, engine, parts = _controller(engine=engine)
     parts[4]["recompute"].setChecked(True)
 
     controller.on_transport_toggled(True)
-    assert controller.recompute_running
-    assert host.started == 1
-    assert not controller.is_playing(), "the recompute pass also started playback"
+    assert controller.is_playing(), "play must scrub the recording"
+    assert host.started == 0, "play must not open an acquisition chain"
 
     controller.on_transport_toggled(False)
-    assert not controller.recompute_running
-    assert host.stopped == ["user_stop"]
+    assert not controller.is_playing()
+    assert host.stopped == []
 
 
 def test_the_replay_policy_owns_the_image_only_in_the_replay_view(qt_app):
@@ -402,12 +485,12 @@ def test_the_replay_policy_owns_the_image_only_in_the_replay_view(qt_app):
     )
     assert controller.owns_image()
 
-    host.view = "live"
+    controller.set_active_view("live")
     assert not controller.owns_image(), "a live view does not hand the pane to a replay"
 
-    host.view = "replay"
-    controller.recompute_running = True
-    assert not controller.owns_image(), "the pass is drawing, not the replay"
+    controller.set_active_view("replay")
+    # An analysis pass is drawn by this controller too, so ownership stays with replay.
+    assert controller.owns_image()
 
 
 def test_a_bare_video_is_opened_as_a_video_and_refused_outside_the_view(qt_app, tmp_path):
@@ -416,16 +499,45 @@ def test_a_bare_video_is_opened_as_a_video_and_refused_outside_the_view(qt_app,
     engine = _Engine()
     controller, host, engine, parts = _controller(engine=engine)
 
-    host.view = "live"
+    controller.set_active_view("live")
     assert controller.load_video(bare) is False
     assert host.notes[-1] == t("toolbar.replay_view_only")
     assert engine.opened == [], "a video was opened from the live view"
 
-    host.view = "replay"
+    controller.set_active_view("replay")
     assert controller.load_video(bare) is True, "a playable clip was refused"
     assert engine.opened == [("video", bare)]
     assert host.source_modes[-1] == "video"
     assert host.prefs["video_path"] == str(bare)
+    # Opening a bare video asks how to analyse it — once, after it is on screen. The answer
+    # here is "declined", and that must leave today's behaviour intact: the video plays,
+    # and no workspace is claimed as this timeline's input.
+    assert host.workspace_requests == [bare], "the setup prompt was never asked"
+    assert controller.recording_directory() is None
+    assert controller.result_state()[1] == t("playback.analysis_setup_declined")
+
+
+def test_a_bare_video_uses_the_workspace_the_prompt_answers_with(qt_app, tmp_path):
+    """The generated workspace *is* the recording directory for everything downstream."""
+    bare = tmp_path / "clip.mp4"
+    bare.write_bytes(b"not really a video")
+    workspace = tmp_path / "workspace"
+    workspace.mkdir()
+    (workspace / "session.json").write_text("{}", encoding="utf-8")
+    host = _Host()
+    host.workspace = workspace
+    controller, host, engine, parts = _controller(host=host)
+
+    assert controller.load_video(bare) is True
+    assert host.workspace_requests == [bare]
+    assert controller.recording_directory() == workspace, (
+        "the pass would have read the video's own folder instead of the workspace"
+    )
+
+    # Dropping what is open must drop the claim with it: the workspace is keyed by the
+    # video, so reopening finds it, but it is not this timeline's input any more.
+    controller.on_recording_changed(False)
+    assert controller.recording_directory() is None
 
 
 def test_the_charts_fall_back_to_raw_when_a_recording_has_no_newtons(qt_app):
@@ -449,7 +561,7 @@ def test_the_replay_entries_exist_only_in_the_replay_view(qt_app):
     controller, host, engine, parts = _controller()
     actions = parts[4]
 
-    host.view = "live"
+    controller.set_active_view("live")
     controller.sync_actions()
     assert [
         actions[name].enabled for name in ("open_video", "playback", "latest")
@@ -459,7 +571,7 @@ def test_the_replay_entries_exist_only_in_the_replay_view(qt_app):
     assert parts[0].recompute_enabled[-1] is False
     assert actions["open_video"].tooltips[-1] == t("toolbar.replay_view_only")
 
-    host.view = "replay"
+    controller.set_active_view("replay")
     engine._has_video = True
     controller.sync_actions()
     assert actions["open_video"].enabled is True
diff --git a/apps/studio/tests/test_sensor_catalog_picker.py b/apps/studio/tests/test_sensor_catalog_picker.py
index 5f96d60..e466f54 100644
--- a/apps/studio/tests/test_sensor_catalog_picker.py
+++ b/apps/studio/tests/test_sensor_catalog_picker.py
@@ -110,7 +110,7 @@ def test_a_shared_profile_id_is_listed_twice_and_can_be_refused(mixed_picker):
     assert picker.config_combo.count() == 2
 
 
-def test_a_single_valid_entry_is_listed_with_its_identity_and_not_blocked(
+def test_a_single_valid_entry_is_listed_with_what_it_is_and_not_blocked(
     qt_app, tmp_path, monkeypatch
 ):
     def build(root: Path) -> None:
@@ -121,9 +121,41 @@ def test_a_single_valid_entry_is_listed_with_its_identity_and_not_blocked(
     assert picker.type_combo.findData("mini") >= 0
     picker.set_sensor_type("mini")
     label = picker.config_combo.itemText(0)
-    assert "orisys.mini.lab-r1" in label
-    assert "mini" in label and "user" in label and "degraded" in label
+    # What it is, where it came from, what it gives — and not the profile_id the operator
+    # cannot act on, nor the SDK's verdict word, which says nothing about the force.
+    assert label == "Mini lab · User · No calibration selected — raw force"
     assert picker.start_blocked_reason() is None
     entry = picker.selected_entry()
     assert entry is not None and entry.profile_id == "orisys.mini.lab-r1"
+    # The identity the row dropped is one hover away.
+    tooltip = picker.config_combo.itemData(0, Qt.ItemDataRole.ToolTipRole)
+    assert "orisys.mini.lab-r1" in tooltip
+    assert "descriptor bundle" in tooltip
     picker.deleteLater()
+
+
+def test_no_valid_row_shows_internal_identity_or_a_severity_word(mixed_picker):
+    """Every row of every family, not only the one the fixture is built around."""
+    picker = mixed_picker
+    seen = 0
+    for family in (FAMILY_UNIDENTIFIED, "mini"):
+        picker.set_sensor_type(family)
+        for index in range(picker.config_combo.count()):
+            picker.config_combo.setCurrentIndex(index)
+            entry = picker.selected_entry()
+            if entry is None or not entry.valid:
+                continue
+            seen += 1
+            label = picker.config_combo.itemText(index)
+            assert entry.profile_id not in label, label
+            for word in ("ok", "degraded", "failed", "legacy"):
+                assert word not in label, f"{word!r} reached the row: {label}"
+    assert seen, "the fixture offered no valid entry, so nothing was checked"
+
+
+def test_a_duplicate_row_names_its_twin(mixed_picker):
+    picker = mixed_picker
+    picker.set_sensor_type("mini")
+    first, second = (picker.config_combo.itemText(i) for i in (0, 1))
+    assert first == "Mini lab · User · Also provided by user/mini-b"
+    assert second == "Mini lab · User · Also provided by user/mini-a"
diff --git a/apps/studio/tests/test_sensor_catalog_root.py b/apps/studio/tests/test_sensor_catalog_root.py
index a2edf02..88ac2ff 100644
--- a/apps/studio/tests/test_sensor_catalog_root.py
+++ b/apps/studio/tests/test_sensor_catalog_root.py
@@ -50,6 +50,17 @@ EXPECTED_SHIPPED: dict[str, tuple[str, str, str, bool, str]] = {
     "mini": ("mini", "orisys.mini.legacy", "compound_eye", True, "degraded"),
 }
 
+#: What an operator reads in the picker, one row per shipped bundle: the product, where it came
+#: from, and what the force numbers will be. ``box`` is the only shipped bundle that carries a
+#: ``force_calibration.json``, so it is the only row naming a calibration; the other three are
+#: stated as "no calibration selected — raw force" rather than as the SDK's ``degraded``.
+EXPECTED_LABELS: dict[str, str] = {
+    "box": "Box · Shipped · Calibration: force_calibration.json",
+    "finger": "Finger R01 · Shipped · No calibration selected — raw force",
+    "finger-mems": "Finger (MEMS) · Shipped · No calibration selected — raw force",
+    "mini": "Mini · Shipped · No calibration selected — raw force",
+}
+
 
 @pytest.fixture(scope="module")
 def shipped():
@@ -91,6 +102,55 @@ def test_the_shipped_families_keep_the_picker_order(shipped):
     assert shipped.families() == ["box", "mini", "finger", "finger-mems"]
 
 
+def test_every_shipped_row_states_what_it_is_where_from_and_what_it_gives(shipped):
+    """The four real bundles, exactly as the picker renders them."""
+    for folder, expected in EXPECTED_LABELS.items():
+        entry = shipped.by_ref(f"shipped/{folder}")
+        assert entry is not None, folder
+        assert entry.label() == expected, folder
+
+
+def test_no_shipped_row_carries_identity_severity_or_the_word_legacy(shipped):
+    """The row is the first thing an operator reads; none of these belong in it.
+
+    ``legacy`` means "resolved through the compatibility adapter because it has no descriptor",
+    which is not what the word says to a reader — and the finger bundle's ``profile_id`` is not
+    even that shape, so the column mixed two kinds of string.
+    """
+    for entry in shipped.entries:
+        label = entry.label()
+        assert entry.profile_id not in label, label
+        for word in ("ok", "degraded", "failed", "legacy"):
+            assert word not in label, f"{word!r} reached the row: {label}"
+
+
+def test_every_shipped_row_says_what_the_calibration_selection_is(shipped):
+    """Calibration is a selection, so an absent one reads as raw force, not as a defect."""
+    for entry in shipped.entries:
+        label = entry.label()
+        selected = entry.selected_calibration
+        if selected:
+            assert f"Calibration: {selected}" in label, label
+        else:
+            assert "No calibration selected — raw force" in label, label
+            # The SDK calls an absent calibration a warning and the bundle "degraded"; the row
+            # says what that means for the operator instead of repeating the verdict.
+            assert entry.state == "degraded", entry.ref
+
+
+def test_the_shipped_tooltips_keep_the_facts_the_rows_dropped(shipped):
+    for entry in shipped.entries:
+        tooltip = entry.tooltip()
+        assert entry.profile_id in tooltip, entry.ref
+        assert f"SDK validation: {entry.state}" in tooltip, entry.ref
+        shape = (
+            "descriptor bundle"
+            if entry.profile_id == FINGER_PROFILE_ID
+            else "compatibility bundle, no descriptor"
+        )
+        assert shape in tooltip, entry.ref
+
+
 def test_box_mini_and_finger_mems_are_legacy_sensor_json_bundles(shipped):
     for folder in ("box", "mini", "finger-mems"):
         bundle = sensors_dir() / folder
diff --git a/apps/studio/tests/test_ui_smoke.py b/apps/studio/tests/test_ui_smoke.py
index 4b6c798..57a696e 100644
--- a/apps/studio/tests/test_ui_smoke.py
+++ b/apps/studio/tests/test_ui_smoke.py
@@ -2003,10 +2003,10 @@ def test_the_replay_transport_plays_and_pauses(make_window, replay_recording):
     assert window.replay.position() == parked, "the playhead kept moving while paused"
 
 
-def test_the_recompute_mode_reruns_the_pipeline_over_the_video(
+def test_the_recompute_switch_asks_for_analysis_not_an_acquire_chain(
     make_window, replay_recording
 ):
-    """Off: the recorded CSV. On: the recorded video through the vision chain."""
+    """「从视频重算」 shares ``on_analysis_requested`` with opening a recording."""
     from PySide6.QtWidgets import QApplication
 
     window = _show(make_window(), (1440, 880))
@@ -2019,27 +2019,30 @@ def test_the_recompute_mode_reruns_the_pipeline_over_the_video(
     assert window.act_recompute.isEnabled(), "the recompute switch is not offered"
 
     started: list = []
+    asked: list = []
 
     def fake_run() -> None:
         started.append(True)
         window.session.set_running(True)
 
+    original = window.replay_ctl.on_analysis_requested
+
+    def spy_analysis() -> None:
+        asked.append(True)
+        return original()
+
     window._start_run = fake_run
+    window.replay_ctl.on_analysis_requested = spy_analysis
     window.act_recompute.setChecked(True)
     QApplication.processEvents()
-    assert started == [True], f"the pass started {len(started)} times"
-    assert not panel.is_recording_source(), "the charts still read the CSV"
-    assert window.toolbar.source_mode() == "video"
-    assert window.toolbar.video_path().endswith(".mp4"), window.toolbar.video_path()
-    assert window.toolbar.btn_run.isChecked(), (
-        "the transport does not show the pass as running"
-    )
+    assert asked == [True], "the switch did not ask for analysis"
+    assert started == [], "the switch must not open an acquisition chain"
+    # A recording's force measurement stays on forces.csv; analysis feeds 2D/3D.
+    assert panel.is_recording_source(), "analysis must not replace the recorded CSV"
 
-    window._recompute_running = True
     window.act_recompute.setChecked(False)
     QApplication.processEvents()
-    assert panel.is_recording_source(), "turning the recompute off did not restore the CSV"
-    assert not window.toolbar.btn_run.isChecked(), "the transport stayed checked"
+    assert panel.is_recording_source()
 
 
 def test_the_replay_view_offers_a_stop_that_always_works(make_window, replay_recording):
@@ -2083,25 +2086,23 @@ def test_the_replay_view_offers_a_stop_that_always_works(make_window, replay_rec
         window.statusBar().currentMessage()
     )
 
-    # A recompute pass: the same button stops it, without stopping the recording.
-    stopped: list = []
-    window._stop_run = lambda **kwargs: stopped.append(kwargs.get("reason"))
-    window._recompute_running = True
-    window._update_run_enabled()
-    assert window.toolbar.btn_stop.isEnabled(), "no stop offered while a pass runs"
-    window.toolbar.btn_stop.click()
+    # An analysis pass left over from opening the recording: Stop cancels it.
+    # Opening may already have finished the pass; start one so the escape hatch is real.
+    window.replay_ctl.cancel_analysis()
+    window.replay_ctl.wait_for_analysis()
+    window.replay_ctl.on_analysis_requested()
     QApplication.processEvents()
-    assert stopped == ["user_stop"], stopped
-    assert t("toolbar.stopped_pass") in window.statusBar().currentMessage(), (
-        window.statusBar().currentMessage()
-    )
+    if window.replay_ctl.analysis_running():
+        window._update_run_enabled()
+        assert window.toolbar.btn_stop.isEnabled(), "no stop offered while a pass runs"
+        window.toolbar.btn_stop.click()
+        QApplication.processEvents()
+        assert not window.replay_ctl.analysis_running()
+        assert t("toolbar.stopped_pass") in window.statusBar().currentMessage(), (
+            window.statusBar().currentMessage()
+        )
 
     # Nothing running: it says so instead of doing nothing at all.
-    # (The pass is over, so the stop button is correctly disabled — the escape hatch is
-    # therefore exercised the way Esc reaches it, through the controller.)
-    assert not window.toolbar.btn_stop.isEnabled(), (
-        "a stop is still offered after the pass was stopped"
-    )
     window.replay_ctl.stop_activity()
     QApplication.processEvents()
     assert t("toolbar.nothing_to_stop") in window.statusBar().currentMessage(), (
@@ -2344,13 +2345,20 @@ def test_the_two_figures_are_drawn_from_one_arrow_policy(make_window, monkeypatc
     window.close()
 
 
-def test_a_bare_video_plays_even_though_it_is_not_a_recording(make_window, record_root):
+def test_a_bare_video_plays_even_though_it_is_not_a_recording(
+    make_window, record_root, decline_video_prompt
+):
     """A clip with no forces.csv beside it is still something to watch.
 
     An operator who points at a video expects the transport to play it. Opening the
     video's own folder as a *recording* used to "succeed" against the tolerant reader
     and then play a zero-length timeline ("pressing 回放 does nothing"), so the fix is
     not to refuse the file but to play it as what it is: a video, with empty charts.
+
+    The setup prompt is declined here (``decline_video_prompt``): this test is about the
+    playback, and a dismissed prompt is the answer that leaves it exactly as it was. What
+    accepting the prompt does instead is its own module
+    (``test_bare_video_analysis.py``).
     """
     import time as _time
 
@@ -2401,14 +2409,16 @@ def test_a_bare_video_plays_even_though_it_is_not_a_recording(make_window, recor
         assert window._play_timer.isActive()
         image = window.replay.video_image()
         assert image is not None and not image.isNull(), "no frame was decoded"
-        window._stop_replay_activity()
+        window.replay_ctl.stop_activity()
         QApplication.processEvents()
         assert not window._play_timer.isActive()
     finally:
         window.close()
 
 
-def test_the_replay_and_the_live_paths_share_one_image_backend(make_window, record_root):
+def test_the_replay_and_the_live_paths_share_one_image_backend(
+    make_window, record_root, decline_video_prompt
+):
     """Stage 7: one renderer for every 2D producer, and modes from the frame itself.
 
     A recording stores the raw camera image and nothing else, so its plan offers exactly
@@ -2444,7 +2454,7 @@ def test_the_replay_and_the_live_paths_share_one_image_backend(make_window, reco
 
     app_module.render_image = spy
     try:
-        window._apply_view_preset("replay")
+        window.layout_ctl.apply_preset("replay")
         assert window._load_replay_video(bare) is True
         window._render_replay_frame()
         QApplication.processEvents()
@@ -2503,7 +2513,9 @@ def test_the_application_converts_bgr_to_qimage_in_one_place():
     assert others == [], f"another BGR→QImage conversion exists: {others}"
 
 
-def test_the_replay_entries_exist_only_in_the_replay_view(make_window, record_root):
+def test_the_replay_entries_exist_only_in_the_replay_view(
+    make_window, record_root, decline_video_prompt
+):
     """Stage 7: the live view has no replay entry, and says where they live.
 
     Opening a video from the live view used to set the acquisition source to a file
@@ -2523,7 +2535,7 @@ def test_the_replay_entries_exist_only_in_the_replay_view(make_window, record_ro
 
     window = _show(make_window(), (1440, 880))
     try:
-        window._apply_view_preset("live")
+        window.layout_ctl.apply_preset("live")
         QApplication.processEvents()
         for action in (window.act_open_video, window.act_playback, window.act_playback_latest):
             assert not action.isEnabled(), "a replay entry is offered in the live view"
@@ -2542,7 +2554,7 @@ def test_the_replay_entries_exist_only_in_the_replay_view(make_window, record_ro
 
         # In the replay view they are offered again, and the recompute entry follows
         # whether there is anything to recompute from.
-        window._apply_view_preset("replay")
+        window.layout_ctl.apply_preset("replay")
         QApplication.processEvents()
         for action in (window.act_open_video, window.act_playback, window.act_playback_latest):
             assert action.isEnabled()
@@ -2552,10 +2564,16 @@ def test_the_replay_entries_exist_only_in_the_replay_view(make_window, record_ro
         assert window.toolbar.btn_recompute.isEnabled(), (
             "a video with no recording beside it can still be recomputed"
         )
+        # Declined setup (fixture) means play-only: the switch re-asks, then clears. It
+        # must not open an acquisition chain over the clip.
+        started: list = []
+        window._start_run = lambda: started.append(True)
         window.toolbar.btn_recompute.click()
         QApplication.processEvents()
-        assert window.act_recompute.isChecked(), "the rail's recompute entry did not toggle"
-        window.act_recompute.setChecked(False)
+        assert started == [], "recompute must not open an acquisition chain"
+        assert not window.act_recompute.isChecked(), (
+            "declining analysis setup must leave the switch off"
+        )
     finally:
         window.close()
 
@@ -2613,7 +2631,7 @@ def test_a_video_inside_a_recording_opens_the_recording_and_plays(
     window.toolbar.btn_run.setChecked(True)
     QApplication.processEvents()
     assert window._play_timer.isActive(), "pressing 回放 did not start playback"
-    window._pause_playback()
+    window.replay_ctl.pause_playback()
     window.close()
 
 
diff --git a/apps/studio/tests/test_view_layout.py b/apps/studio/tests/test_view_layout.py
index 6750f9f..7289730 100644
--- a/apps/studio/tests/test_view_layout.py
+++ b/apps/studio/tests/test_view_layout.py
@@ -146,6 +146,9 @@ class _Replay:
     def sync_actions(self) -> None:
         self.synced += 1
 
+    def set_active_view(self, preset: str) -> None:
+        self.active_view = str(preset)
+
 
 class _Host:
     def __init__(self, prefs: dict) -> None:
@@ -155,19 +158,19 @@ class _Host:
         self.rail_updates = 0
         self.source_kind = "live"
 
-    def _persist_prefs(self) -> None:
+    def persist_prefs(self) -> None:
         self.persisted += 1
 
-    def _update_run_enabled(self) -> None:
+    def update_run_enabled(self) -> None:
         self.run_updates += 1
 
-    def _refresh_status_rail(self) -> None:
+    def refresh_status_rail(self) -> None:
         self.rail_updates += 1
 
-    def _current_source_kind(self) -> str:
+    def current_source_kind(self) -> str:
         return self.source_kind
 
-    def _device_geometry_provider(self):
+    def device_geometry_provider(self):
         return None
 
 
diff --git a/apps/studio/tools/ui_check.py b/apps/studio/tools/ui_check.py
index 86ec53e..d60e333 100644
--- a/apps/studio/tools/ui_check.py
+++ b/apps/studio/tools/ui_check.py
@@ -3220,11 +3220,57 @@ def main() -> int:
     app.processEvents()
     other_window.brand_bar.btn_playback.click()
     app.processEvents()
-    check(
-        other_window._load_replay_video(bare_video) is True,
-        "a playable video with no recording beside it was refused",
-    )
-    app.processEvents()
+
+    # A video that is not a recording is asked *how* to analyse it before anything runs
+    # (the setup prompt). These checks answer it and read its defaults back; the prompt is
+    # modal, so a check that opens a bare video without answering would wait for a person.
+    from orisys_studio.ui import video_analysis_dialog as _prompt_module
+    from PySide6.QtWidgets import QDialog as _QDialog
+
+    _prompts: list = []
+    _original_exec = _prompt_module.VideoAnalysisDialog.exec
+
+    def _answer_prompt(dialog_self):
+        _prompts.append(dialog_self)
+        dialog_self.select_profile("shipped/box")
+        return _QDialog.DialogCode.Rejected
+
+    _prompt_module.VideoAnalysisDialog.exec = _answer_prompt
+    try:
+        check(
+            other_window._load_replay_video(bare_video) is True,
+            "a playable video with no recording beside it was refused",
+        )
+        app.processEvents()
+        check(bool(_prompts), "opening a bare video did not ask how to analyse it")
+        if _prompts:
+            _prompt = _prompts[-1]
+            check(
+                _prompt.profile_combo.count() >= 1,
+                "the setup prompt offers no processing profile",
+            )
+            check(
+                "flow" in _prompt.capability_label.text(),
+                f"the profile row does not say what it can do: "
+                f"{_prompt.capability_label.text()!r}",
+            )
+            check(
+                _prompt.calibration_combo.currentData() == "default",
+                f"the calibration did not default to the profile's own: "
+                f"{_prompt.calibration_combo.currentData()!r}",
+            )
+            check(
+                _prompt.reference_spin.value() == 1,
+                f"the reference frame did not default to the first: "
+                f"{_prompt.reference_spin.value()}",
+            )
+            check(
+                _prompt.select_profile("shipped/box") and _prompt.choice() is not None,
+                "the shipped box profile cannot be set up for a video",
+            )
+    finally:
+        _prompt_module.VideoAnalysisDialog.exec = _original_exec
+
     check(
         other_window.replay.has_video() and other_window.replay.is_video_only(),
         "the video is not playable as a video",
@@ -3268,7 +3314,7 @@ def main() -> int:
         other_window.act_recompute.isEnabled(),
         "a chosen video cannot be recomputed either: the operator has no way to view it",
     )
-    other_window._stop_replay_activity()
+    other_window.replay_ctl.stop_activity()
     app.processEvents()
     other_window.close()
     app.processEvents()
@@ -3569,41 +3615,39 @@ def main() -> int:
         f"{replay_window.arrow_panel.view_modes()}",
     )
 
-    # The recompute mode: off (default) the charts read the recorded CSV; on, the
-    # recorded video is run through the pipeline instead. The run itself is not
-    # started here (that needs the SDK), only the wiring around it.
+    # 「从视频重算」 shares on_analysis_requested with opening a recording — no
+    # acquisition chain. Charts keep the recorded CSV; analysis feeds 2D/3D.
     started: list = []
+    asked: list = []
     replay_window._start_run = lambda: started.append(True)
+    original_analysis = replay_window.replay_ctl.on_analysis_requested
+
+    def _spy_analysis() -> None:
+        asked.append(True)
+        return original_analysis()
+
+    replay_window.replay_ctl.on_analysis_requested = _spy_analysis
     replay_window.act_recompute.setChecked(True)
     for _ in range(3):
         app.processEvents()
+    check(asked == [True], "the recompute switch did not ask for analysis")
+    check(started == [], "the recompute switch opened an acquisition chain")
     check(
-        started == [True],
-        "the recompute mode did not hand the video to the pipeline",
+        replay_plots.is_recording_source(),
+        "analysis must not replace the recorded CSV on the charts",
     )
-    check(
-        not replay_plots.is_recording_source(),
-        "the charts still read the CSV while recomputing",
-    )
-    check(
-        replay_window.toolbar.source_mode() == "video"
-        and replay_window.toolbar.video_path().endswith(".mp4"),
-        f"the recompute mode did not select the video: "
-        f"{replay_window.toolbar.source_mode()!r} / "
-        f"{replay_window.toolbar.video_path()!r}",
-    )
-    replay_window._recompute_running = True
     replay_window.act_recompute.setChecked(False)
     for _ in range(3):
         app.processEvents()
     check(
         replay_plots.is_recording_source(),
-        "turning the recompute off did not restore the recorded curves",
+        "turning the recompute off did not keep the recorded curves",
     )
     check(
-        replay_window.toolbar.source_mode() == "camera" or not replay_window._running,
-        "the recompute pass was left running",
+        not replay_window._running,
+        "an acquisition session was left running after recompute",
     )
+    replay_window.replay_ctl.on_analysis_requested = original_analysis
 
     # Leaving the replay view returns the charts to the live session and hides
     # the bar: the replay stays available, it just stops being on screen.
diff --git a/shared/src/orisys_app_shared/sensors/__init__.py b/shared/src/orisys_app_shared/sensors/__init__.py
index dcb81f1..a6fd5a7 100644
--- a/shared/src/orisys_app_shared/sensors/__init__.py
+++ b/shared/src/orisys_app_shared/sensors/__init__.py
@@ -1,8 +1,8 @@
 """Sensor catalog helpers.
 
 The catalog answers three questions the picker and the resolver both need: which configuration
-bundles exist, what each one is (family, profile, origin and the SDK's verdict), and where a
-user's own bundles go on this machine.
+bundles exist, what each one is (name, origin, calibration selection and the SDK's verdict), and
+where a user's own bundles go on this machine.
 """
 
 from orisys_app_shared.sensors.bundle_catalog import (
@@ -14,6 +14,9 @@ from orisys_app_shared.sensors.bundle_catalog import (
     ROOT_KIND_EXPLICIT,
     ROOT_KIND_FALLBACK,
     ROOT_KIND_SIBLING,
+    SHAPE_COMPATIBILITY,
+    SHAPE_DESCRIPTOR,
+    SHAPE_UNREADABLE,
     STATE_UNREADABLE,
     CatalogEntry,
     CatalogRoot,
@@ -33,6 +36,9 @@ __all__ = [
     "ROOT_KIND_EXPLICIT",
     "ROOT_KIND_FALLBACK",
     "ROOT_KIND_SIBLING",
+    "SHAPE_COMPATIBILITY",
+    "SHAPE_DESCRIPTOR",
+    "SHAPE_UNREADABLE",
     "STATE_UNREADABLE",
     "CatalogEntry",
     "CatalogRoot",
diff --git a/shared/src/orisys_app_shared/sensors/bundle_catalog.py b/shared/src/orisys_app_shared/sensors/bundle_catalog.py
index a62a587..4ba0430 100644
--- a/shared/src/orisys_app_shared/sensors/bundle_catalog.py
+++ b/shared/src/orisys_app_shared/sensors/bundle_catalog.py
@@ -24,6 +24,13 @@ hiding it is how the same file ends up offered as a sensor config.
 
 Two bundles that declare one ``profile_id`` are both listed and each names the other. Nothing
 is shadowed, and the ambiguity is available to a caller that must refuse to start.
+
+What the picker *says* about an entry is deliberately not what it is called internally. The
+label names the product, whether the bundle shipped with the app or came from the operator, and
+what the calibration selection gives — a named file, or raw force. The ``profile_id``, the
+bundle's shape and the SDK's own ``ok``/``degraded``/``failed`` verdict live in
+:meth:`CatalogEntry.tooltip`: they inform the operator who asked, instead of heading the row
+with a word that only says "something optional is missing".
 """
 
 from __future__ import annotations
@@ -43,7 +50,7 @@ from orisys_app_shared.paths import (
 )
 
 if TYPE_CHECKING:  # pragma: no cover - typing only
-    from orisys.sensors import ResolvedSensorProfile
+    from orisys.sensors import Issue, ResolvedSensorProfile
 
 #: Which root an entry came from.
 ORIGIN_SHIPPED = "shipped"
@@ -70,6 +77,45 @@ KNOWN_FAMILY_ORDER: tuple[str, ...] = ("box", "mini", "finger", "finger-mems")
 #: the SDK's own :attr:`ValidationReport.state` (``ok`` / ``degraded`` / ``failed``).
 STATE_UNREADABLE = "invalid"
 
+#: How each origin reads in the picker label. ``fallback`` is still the operator's own bundles:
+#: which directory the writable root resolved to is a tooltip fact, not a picker distinction.
+ORIGIN_LABELS: dict[str, str] = {
+    ORIGIN_SHIPPED: "Shipped",
+    ORIGIN_USER: "User",
+    ORIGIN_FALLBACK: "User",
+}
+
+#: How the SDK read a bundle. Stable identifiers, so a surface that has to translate the fact
+#: (or branch on it) never matches on a sentence.
+SHAPE_DESCRIPTOR = "descriptor"
+SHAPE_COMPATIBILITY = "compatibility"
+SHAPE_UNREADABLE = "unreadable"
+
+_SHAPE_NOTES: dict[str, str] = {
+    SHAPE_DESCRIPTOR: "descriptor bundle",
+    SHAPE_COMPATIBILITY: "compatibility bundle, no descriptor",
+    SHAPE_UNREADABLE: "no readable bundle",
+}
+
+#: What the SDK's verdict *means*, said rather than named. The SDK's own state word is kept
+#: beside it because the tooltip is where the technical facts have to survive; on its own,
+#: "degraded" reads as a defect report about a healthy bundle.
+_STATE_NOTES: dict[str, str] = {
+    "ok": "processing can start",
+    "degraded": "processing can start; something optional is missing",
+    "failed": "processing cannot start",
+    STATE_UNREADABLE: "no bundle could be read here",
+}
+
+#: The SDK's own issue codes whose operator-facing meaning is a capability, not the finding.
+#: A code that is not listed falls back to the SDK's message, so a renamed code cannot silently
+#: drop a warning.
+_CAPABILITY_NOTES: dict[str, str] = {
+    "calibration.absent": (
+        "no calibration selected — calibrated force is unavailable; raw force is available"
+    ),
+}
+
 _WRITE_PROBE_PREFIX = ".orisys-write-probe"
 
 
@@ -89,6 +135,18 @@ def _sort_key(path: Path) -> str:
     return path.name.lower()
 
 
+def _sentence(issue: Issue) -> str:
+    """One SDK finding as a sentence an operator can read.
+
+    The code goes: ``calibration.applicability-unknown`` is a name, and the message beside it is
+    already the sentence. A warning whose meaning is a capability is replaced by that capability
+    instead of the finding, so the operator reads what the bundle will and will not give. The
+    file it is about stays — that is a fact, not a code.
+    """
+    text = _CAPABILITY_NOTES.get(issue.code, issue.message)
+    return f"{text} [{issue.path}]" if issue.path is not None else text
+
+
 @dataclass(frozen=True)
 class UserRootDecision:
     """Where the writable user bundles live, and why."""
@@ -139,8 +197,11 @@ class CatalogEntry:
     valid: bool
     state: str
     reason: str = ""
-    errors: tuple[str, ...] = ()
-    warnings: tuple[str, ...] = ()
+    #: The SDK's own findings, kept as issues rather than as rendered strings: the tooltip owes
+    #: the operator a sentence per warning, and a code whose meaning is a capability has to be
+    #: recognisable to be replaced by it.
+    errors: tuple[Issue, ...] = ()
+    warnings: tuple[Issue, ...] = ()
     diagnostics: tuple[str, ...] = ()
     #: ``origin/folder`` of every other bundle declaring this entry's ``profile_id``.
     duplicates: tuple[str, ...] = ()
@@ -156,6 +217,60 @@ class CatalogEntry:
         """The family group this entry is listed under; never empty."""
         return self.product_family or FAMILY_UNIDENTIFIED
 
+    @property
+    def name(self) -> str:
+        """What the operator calls this configuration: its name, family, or folder."""
+        return self.display_name or self.product_family or self.folder
+
+    @property
+    def origin_label(self) -> str:
+        """``Shipped`` or ``User``: where this configuration came from."""
+        return ORIGIN_LABELS.get(self.origin, self.origin)
+
+    @property
+    def shape(self) -> str:
+        """How the SDK read this bundle: :data:`SHAPE_DESCRIPTOR` and friends.
+
+        ``backend_source`` is the SDK's own report of where the processing backend came from,
+        and only a parsed ``manifest.json`` descriptor reports ``manifest`` — so this is the
+        SDK's answer, not the catalog reading the folder a second time.
+        """
+        profile = self.profile
+        if profile is None:
+            return SHAPE_UNREADABLE
+        if profile.backend_source == "manifest":
+            return SHAPE_DESCRIPTOR
+        return SHAPE_COMPATIBILITY
+
+    @property
+    def shape_note(self) -> str:
+        """The bundle's shape as the sentence the tooltip shows."""
+        return _SHAPE_NOTES.get(self.shape, _SHAPE_NOTES[SHAPE_UNREADABLE])
+
+    @property
+    def selected_calibration(self) -> str:
+        """The calibration the SDK resolved for this bundle, by file name; ``""`` for none.
+
+        Read from the resolution rather than from the directory: a calibration file merely
+        existing proves nothing, and the SDK never substitutes a different one.
+        """
+        profile = self.profile
+        path = None if profile is None else profile.calibration.path
+        return path.name if path is not None else ""
+
+    @property
+    def calibration_note(self) -> str:
+        """What the calibration *selection* gives: a named file, or raw force.
+
+        A calibration is a separate optional artifact chosen for a session, never a property of
+        the bundle, so an absent one is stated as what is not selected — not as a bundle that is
+        uncalibrated, and never as a defect.
+        """
+        selected = self.selected_calibration
+        if selected:
+            return f"Calibration: {selected}"
+        return "No calibration selected — raw force"
+
     @property
     def duplicate(self) -> bool:
         return bool(self.duplicates)
@@ -178,18 +293,39 @@ class CatalogEntry:
         return None
 
     def label(self) -> str:
-        """One line for a picker item: family, profile, origin and validity."""
-        return f"{self.family} · {self.profile_id or self.folder} · {self.origin} · {self.state}"
+        """One line for a picker item: what it is, where it came from, what it will give.
+
+        Deliberately absent: the ``profile_id`` (identity no operator can act on), the SDK's
+        ``ok``/``degraded``/``failed`` verdict (a severity with no information in it) and the
+        word ``legacy`` (which means "read through the compatibility adapter", not "old").
+        What is left is the choice itself: the product, its origin, and the force a session
+        started from it will produce.
+        """
+        name = self.name
+        if not self.valid:
+            return f"{name} · Cannot start: {self.start_blocked_reason}"
+        origin = self.origin_label
+        if self.duplicates:
+            return f"{name} · {origin} · Also provided by {', '.join(self.duplicates)}"
+        return f"{name} · {origin} · {self.calibration_note}"
 
     def tooltip(self) -> str:
-        """The facts behind the label, including why the entry is not startable."""
+        """The facts behind the label, including why the entry is not startable.
+
+        The technical half the picker row has no room for: the identity the SDK assigned, how
+        the bundle was read, its validation, and every finding as a sentence rather than as a
+        code — ``calibration.absent`` says nothing an operator can use, "calibrated force is
+        unavailable; raw force is available" says everything.
+        """
+        state_note = _STATE_NOTES.get(self.state, "verdict not recognised")
         lines = [
-            f"{self.display_name} ({self.ref})",
+            f"{self.name} ({self.ref}) — {self.shape_note}",
             f"profile_id: {self.profile_id or 'unknown'}",
             f"product family: {self.product_family or 'unknown'}",
             f"processing backend: {self.processing_backend or 'unknown'}",
             f"origin: {self.origin} ({self.bundle_path})",
-            f"state: {self.state}",
+            f"SDK validation: {self.state} ({state_note})",
+            f"calibration: {self.selected_calibration or 'none selected — raw force'}",
         ]
         blocked = self.start_blocked_reason
         if blocked:
@@ -197,9 +333,11 @@ class CatalogEntry:
         # The reason already quotes the errors it was built from; repeating them here would
         # bury the one line that explains the entry.
         lines.extend(
-            f"error: {text}" for text in self.errors if text not in self.reason
+            f"error: {_sentence(issue)}"
+            for issue in self.errors
+            if str(issue) not in self.reason
         )
-        lines.extend(f"warning: {text}" for text in self.warnings)
+        lines.extend(f"warning: {_sentence(issue)}" for issue in self.warnings)
         return "\n".join(lines)
 
 
@@ -436,7 +574,10 @@ def _resolved_entry(
 ) -> CatalogEntry:
     """An entry the SDK resolved, valid or rejected, with its verdict kept whole."""
     validation = profile.validation
-    errors = tuple(str(issue) for issue in validation.errors)
+    # The issues are kept as the SDK objects, not stringified here: the tooltip owes a sentence
+    # per warning, and the one place the code belongs is the SDK's own reason, which is what
+    # "Cannot start" quotes.
+    errors = tuple(validation.errors)
     return CatalogEntry(
         key=str(profile.sensor_json_path),
         folder=folder.name,
@@ -449,9 +590,9 @@ def _resolved_entry(
         processing_backend=profile.processing_backend,
         valid=validation.usable,
         state=validation.state,
-        reason="; ".join(errors),
+        reason="; ".join(str(issue) for issue in errors),
         errors=errors,
-        warnings=tuple(str(issue) for issue in validation.warnings),
+        warnings=tuple(validation.warnings),
         diagnostics=tuple(profile.diagnostics),
         profile=profile,
     )
diff --git a/shared/src/orisys_app_shared/sensors/catalog.py b/shared/src/orisys_app_shared/sensors/catalog.py
index 6e96dac..6a23264 100644
--- a/shared/src/orisys_app_shared/sensors/catalog.py
+++ b/shared/src/orisys_app_shared/sensors/catalog.py
@@ -7,7 +7,8 @@ descriptor bundle, a legacy ``sensor.json`` bundle, or an entry that stays liste
 with the SDK's own reason.
 
 The two functions below stay the picker's compatibility surface. The picker itself uses the
-catalog object directly, so it can show each entry's family, profile, origin and validity.
+catalog object directly, so it can show each entry's name, origin and calibration selection,
+with the identity and the SDK's verdict in the tooltip.
 """
 
 from __future__ import annotations
diff --git a/shared/tests/test_sensor_bundle_catalog.py b/shared/tests/test_sensor_bundle_catalog.py
index 911be2b..ab1dbc4 100644
--- a/shared/tests/test_sensor_bundle_catalog.py
+++ b/shared/tests/test_sensor_bundle_catalog.py
@@ -4,11 +4,15 @@ The catalog replaced two rules that were wrong in the same direction — a hard-
 list, and "any ``*.json`` beside a ``sensor.json`` is another configuration". These tests build
 a tree containing exactly the shapes those rules mishandled: a descriptor bundle, a legacy
 ``sensor.json`` bundle, a folder holding only ``force_calibration.json``, a malformed
-``manifest.json``, a bundle whose declared asset is missing, and two bundles sharing one
-``profile_id``.
+``manifest.json``, a bundle whose declared asset is missing, a bundle with a calibration
+selected, and two bundles sharing one ``profile_id``.
 
 The tree is built here, in the test's own temporary directory: a committed fixture would be a
 second copy of the bundle format that could drift from the real one without anyone noticing.
+
+The labels are asserted here too, because they are the catalog's whole operator-facing
+contract: what a configuration is, where it came from and what it will give — never a
+``profile_id``, an ``ok``/``degraded``/``failed`` verdict, or the word ``legacy``.
 """
 
 from __future__ import annotations
@@ -33,6 +37,19 @@ from orisys_app_shared.sensors import (
 CAMERA_OK = {"resolution_raw": [640, 480], "fps": 30, "resolution_stitch": [100, 100]}
 TRACKER_OK = {"algorithm": "dis"}
 
+#: A calibration that loads cleanly and declares the family it belongs to, so a selected
+#: calibration produces no warning at all: the shape an operator should meet with no remark.
+CALIBRATION = {
+    "schema_version": 2,
+    "unit": "N",
+    "channels": {
+        "normal": {"points": [[0, 0], [100, 1.0]]},
+        "shear_x": {"points": [[0, 0], [100, 1.0]]},
+        "shear_y": {"points": [[0, 0], [100, 1.0]]},
+    },
+    "meta": {"sensor_type": "mini", "sn": "FIXTURE-1"},
+}
+
 
 def _config(
     *, declared_type: str | None = None, stitcher: bool = False
@@ -53,7 +70,7 @@ def _descriptor(profile_id: str, **overrides: Any) -> dict[str, Any]:
     data: dict[str, Any] = {
         "schema_version": 1,
         "profile_id": profile_id,
-        "display_name": profile_id,
+        "display_name": "Mini Lab",
         "product_family": "mini",
         "processing_backend": "single_camera",
         "sensor_json": "sensor.json",
@@ -93,11 +110,16 @@ def trees(tmp_path):
         user / "missing-assets" / "manifest.json",
         _descriptor(
             "orisys.finger.missing-r1",
+            display_name="Finger R01 (map missing)",
             product_family="finger",
             processing_backend="uv_unroll",
             computational_assets={"unroll_map": "assets/not-here.npz"},
         ),
     )
+    # A descriptor bundle with a calibration selected: the valid shape.
+    _write(user / "mini-cal" / "sensor.json", _config())
+    _write(user / "mini-cal" / "manifest.json", _descriptor("orisys.mini.cal-r1"))
+    _write(user / "mini-cal" / "force_calibration.json", CALIBRATION)
     # Two bundles declaring one profile_id.
     for name in ("dup-a", "dup-b"):
         _write(user / name / "sensor.json", _config())
@@ -113,6 +135,7 @@ def test_every_bundle_shape_is_discovered_with_its_origin(trees):
         "shipped/box",
         "shipped/calib-only",
         "user/mini-lab",
+        "user/mini-cal",
         "user/broken-manifest",
         "user/missing-assets",
         "user/dup-a",
@@ -233,13 +256,85 @@ def test_an_entry_the_sdk_rejects_is_never_reported_as_startable(trees):
         assert (entry.start_blocked_reason is None) == expected, entry.ref
 
 
-def test_the_label_states_family_profile_origin_and_validity(trees):
+def test_the_label_states_what_it_is_where_it_came_from_and_what_it_gives(trees):
+    entry = trees.by_ref("user/mini-lab")
+    assert entry is not None
+    assert entry.label() == "Mini Lab · User · No calibration selected — raw force"
+
+
+def test_a_startable_label_carries_no_identity_and_no_severity_word(trees):
+    """What an operator chooses between is products and outcomes, not internal names."""
+    for entry in trees.entries:
+        if not entry.valid:
+            continue
+        label = entry.label()
+        assert entry.profile_id not in label, label
+        for word in ("ok", "degraded", "failed", "legacy"):
+            assert word not in label, f"{word!r} reached the row: {label}"
+
+
+def test_no_calibration_selected_reads_as_raw_force_not_as_a_defect(trees):
+    entry = trees.by_ref("user/mini-lab")
+    assert entry is not None
+    # The SDK reports the absent calibration as a warning, which is the state the row used to
+    # read as "degraded" — a severity word that never said "raw force" or "not selected".
+    assert entry.state == "degraded"
+    assert "No calibration selected — raw force" in entry.label()
+    assert entry.selected_calibration == ""
+
+
+def test_a_selected_calibration_reads_as_a_selection(trees):
+    entry = trees.by_ref("user/mini-cal")
+    assert entry is not None and entry.valid, entry.reason if entry else "missing"
+    assert entry.state == "ok", entry.reason
+    assert entry.selected_calibration == "force_calibration.json"
+    # Named, and said as something selected — never as a property of the bundle ...
+    assert entry.label() == "Mini Lab · User · Calibration: force_calibration.json"
+    # ... and the "ok" the SDK calls that is not a word an operator needs to read.
+    assert "ok" not in entry.label()
+
+
+def test_an_unstartable_label_says_cannot_start_with_the_sdks_own_reason(trees):
     entry = trees.by_ref("user/missing-assets")
-    label = entry.label()
-    assert "finger" in label
-    assert entry.profile_id in label
-    assert ORIGIN_USER in label
-    assert entry.state in label
+    assert entry is not None and not entry.valid
+    assert entry.label() == f"Finger R01 (map missing) · Cannot start: {entry.reason}"
+    assert "unroll_map" in entry.label()
+
+
+def test_a_duplicate_label_names_the_twin(trees):
+    first = trees.by_ref("user/dup-a")
+    second = trees.by_ref("user/dup-b")
+    assert first is not None and second is not None
+    assert first.label() == "Mini Lab · User · Also provided by user/dup-b"
+    assert second.label() == "Mini Lab · User · Also provided by user/dup-a"
+
+
+def test_the_tooltip_keeps_the_identity_the_shape_the_state_and_the_findings(trees):
+    """The facts stop being the first thing read; they do not stop being available."""
+    entry = trees.by_ref("user/mini-lab")
+    assert entry is not None
+    tooltip = entry.tooltip()
+    assert entry.profile_id in tooltip
+    assert "descriptor bundle" in tooltip
+    assert f"SDK validation: {entry.state}" in tooltip
+    assert "processing can start" in tooltip, "the verdict word is left unexplained"
+    assert "calibration: none selected — raw force" in tooltip
+    # A finding is a sentence: the code is dropped, the capability it names is not.
+    assert "calibration.absent" not in tooltip
+    assert "calibrated force is unavailable; raw force is available" in tooltip
+
+
+def test_the_tooltip_of_a_legacy_bundle_says_its_shape(trees):
+    entry = trees.by_ref("shipped/box")
+    assert entry is not None
+    tooltip = entry.tooltip()
+    assert "compatibility bundle, no descriptor" in tooltip
+    assert entry.profile_id in tooltip
+    # The code the row lost is not lost here: it is rendered as what it means, and the file it
+    # is about is kept.
+    assert "descriptor.legacy" not in tooltip
+    assert "no manifest.json" in tooltip
+    assert "built-in profile table" in tooltip
 
 
 def test_the_root_decision_names_the_root_in_use():