diff --git a/.gitignore b/.gitignore
index bb07c7f..44092df 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@ __pycache__/
 venv/
 /dist/
 /build/pyinstaller_work/
+/build/pyinstaller_work_operator/
 /recordings/*
 !/recordings/.gitkeep
 /tools/ffmpeg/bin/
diff --git a/README.md b/README.md
index 78eb6bc..12ab4a5 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,10 @@
 # Sensor Bench
 
-Sensor Bench 是一款用于触觉传感器测试的 Windows 桌面工具。它基于 Orisys SDK，可预览原始相机画面、显示处理后的传感器图像、录制原始视频，并在各测试步骤中监控 FN / FX / FY 力曲线。
+Sensor Bench 是一款用于触觉传感器**展示**的 Windows 桌面工具。它基于 Orisys SDK，可预览处理后的传感器图像、录制原始视频，并实时显示 FN / FX / FY 力曲线。
+
+默认启动为展示端界面（参考 `qt_viewer_2` 布局）。
+
+> 内部检测 / 流程引导界面不在本公开包中。实验室内部工具见仓库内私有目录 [`internal/`](internal/README.md)（请勿随客户包发布）。
 
 ## 界面示意
 
@@ -10,12 +14,22 @@ Sensor Bench 是一款用于触觉传感器测试的 Windows 桌面工具。它
 
 ## 功能
 
-- 通过左侧流程引导操作员完成检测，支持 **下一步**、**上一步**、**新样品 / 重置**。
-- 从 `config/options.json` 加载可选项：传感器类型、弹性体、CMOS、标记、压头、平台。
-- 默认使用 DDJX01 Orisys 采集：原始画面 `1920x1080 @ 30 FPS`，处理后输出约 `365x365`。
-- 显示原始 `sensor.frame`、处理后的 `Sensor.get_img()`，以及实时力曲线。
-- 将 SDK 原始相机帧录制为 MP4，保存到 `recordings/` 或自定义文件夹。
-- 界面文案存放在 `config/locales/zh_CN.json` 与 `config/locales/en_US.json`。
+展示端：
+
+- 菜单栏 **帮助 → 关于** 显示 Sensor Bench / Orisys 版本
+- 顶部工具栏：传感器类型（Orisys 拼接 / DD06 ROI）、搜索摄像机、摄像机（视频文件）、配置、启动 / 暂停、重置（传感器追踪器）、录像
+- 默认画面为光流箭头绘制在现有背景色（`#121316`）上；也可切换到采集图像箭头或原始画面
+- 右侧三路力曲线：FN / FX / FY（与 qt_viewer_2 相同的滤波与 Y 轴最小量程）
+- 底部日志区，支持 ESC 全屏、S/E 录像、R 重置追踪器
+
+通用能力：
+
+- Orisys / DDJX01：原始画面 `1920x1080 @ 30 FPS`，处理后输出约 `365x365`
+- DD06：外置采集 + 多边形 ROI 矫正后送入 `Sensor.get_img(..., already_processed=True)`
+- 配置下拉框优先使用程序旁 `config/` 中的传感器 JSON（构建前从 Orisys wheel 同步到仓库 `config/`）
+- 展示端可用“搜索”探测本机摄像机，也可用“摄像机”选择视频文件；也可用“配置…”浏览自定义 JSON
+- 录制原始相机帧到 `recordings/`
+- 界面文案存放在 `config/locales/zh_CN.json` 与 `config/locales/en_US.json`
 
 ## 运行环境
 
@@ -25,17 +39,21 @@ Sensor Bench 是一款用于触觉传感器测试的 Windows 桌面工具。它
 - Python 3.10
 - 从 PyPI 安装 `orisys`，或在开发时使用本地 `orisys-sdk` 源码
 
-源码运行时安装依赖：
+源码运行：
 
 ```powershell
 cd D:\repo\sensor-bench
 python -m pip install numpy opencv-python PyQt5 pyqtgraph
 python -m pip install orisys
-$env:PYTHONPATH = "D:\repo\orisys-sdk\src;$env:PYTHONPATH"
 python run.py
 ```
 
-使用 PyPI 包时可不设置 `PYTHONPATH`。若存在同级目录 `D:\repo\orisys-sdk\src`，`run.py` 也会自动检测并加入路径。
+使用本地 SDK 源码开发时：
+
+```powershell
+$env:PYTHONPATH = "D:\repo\orisys-sdk\src;$env:PYTHONPATH"
+python run.py
+```
 
 运行冒烟测试：
 
@@ -43,9 +61,15 @@ python run.py
 python tests/test_smoke.py
 ```
 
+内部操作员界面（私有，勿发布）：
+
+```powershell
+python internal/run_operator.py
+```
+
 ## 打包 EXE
 
-发布包使用 PyInstaller `onedir` 模式，并依赖 Python 3.10 的 conda 环境。
+发布包使用 PyInstaller `onedir` 模式，并依赖 Python 3.10 的 conda 环境。构建时从 PyPI 安装 `orisys`。
 
 1. 创建构建环境：
 
@@ -53,16 +77,30 @@ python tests/test_smoke.py
 .\build\create_env.bat
 ```
 
-2. 构建可执行文件：
+2. 构建**公开**展示端：
 
 ```bat
 .\build\build_exe.bat
 ```
 
-输出路径：
+输出：
 
 ```text
 dist/SensorBench/SensorBench.exe
 ```
 
-打包结果包含 `config/`、`config/locales/` 和 `steps/`，操作员无需改代码即可编辑选项、翻译文案和工作流程。
+公开构建**仅**包含展示端，不包含 `internal/`、`steps/` 或操作员流程文案。
+
+3. 构建**内部**操作员端（勿发给客户）：
+
+```bat
+.\build\build_operator_exe.bat
+```
+
+输出：
+
+```text
+dist/SensorBenchOperator/SensorBenchOperator.exe
+```
+
+内部包会附带 `steps/`、`config/options.json` 与完整操作员文案，可直接编辑。
diff --git a/build/README.md b/build/README.md
index 58d25b9..f36b573 100644
--- a/build/README.md
+++ b/build/README.md
@@ -1,6 +1,9 @@
 # Sensor Bench EXE Build
 
-This folder contains the Windows PyInstaller build setup for Sensor Bench.
+This folder contains Windows PyInstaller build setups for:
+
+- **Public** exhibition app → `dist/SensorBench/`
+- **Private** operator app → `dist/SensorBenchOperator/` (internal use only)
 
 ## Requirements
 
@@ -9,7 +12,8 @@ This folder contains the Windows PyInstaller build setup for Sensor Bench.
 - Python 3.10 build environment
 - Internet access to install `orisys` from PyPI
 
-The build installs `orisys` from PyPI. Do not use `PYTHONPATH` or an editable `orisys-sdk` checkout for release builds.
+The build installs `orisys` from PyPI. Do not use `PYTHONPATH` or an editable
+`orisys-sdk` checkout for release builds.
 
 ## Build
 
@@ -20,7 +24,8 @@ From the repository root (cmd or PowerShell):
 .\build\build_exe.bat
 ```
 
-The `.bat` wrappers bypass the local PowerShell execution policy. If you prefer calling PowerShell directly:
+The `.bat` wrappers bypass the local PowerShell execution policy. If you prefer
+calling PowerShell directly:
 
 ```bat
 powershell -NoProfile -ExecutionPolicy Bypass -File .\build\create_env.ps1
@@ -33,7 +38,23 @@ Output:
 dist/SensorBench/SensorBench.exe
 ```
 
-The build is `onedir` rather than `onefile` so startup is faster and bundled DLL/resource issues are easier to diagnose.
+After installing/upgrading `orisys`, the build syncs wheel sensor `*.json` into
+repo `config/` via `build/sync_wheel_configs.py` (for example `ddjx01.json`)
+before PyInstaller, never touching `locales/`. The helper reads from the
+installed wheel's bundled `orisys/configs/` directory instead of
+`orisys.configs.CONFIG_DIR`, which can point at the repo's local `config/`
+during builds. PyInstaller bundles that `config/`, then the script copies repo
+`config/` beside the EXE so operators can edit sensor JSON and locales.
+
+The public build intentionally excludes:
+
+- `internal/` (private operator UI)
+- `steps/` workflow JSON
+- `config/options.json` lab component metadata
+- `sensor_bench_operator` / former `sensor_bench.app` modules
+
+The build is `onedir` rather than `onefile` so startup is faster and bundled
+DLL/resource issues are easier to diagnose.
 
 ## Validation
 
@@ -44,15 +65,64 @@ python tests/test_smoke.py
 python build/verify_dist.py
 ```
 
+`verify_dist.py` checks the expected public layout **and** fails if internal
+paths, operator modules, workflow locale keys, or private workflow text appear
+in the dist tree.
+
 Manual hardware check:
 
 1. Run `dist\SensorBench\SensorBench.exe`.
-2. Confirm the UI opens without setting `PYTHONPATH`.
+2. Confirm the exhibition UI opens without setting `PYTHONPATH`.
 3. Confirm the UI defaults to Simplified Chinese and can switch to English.
-4. Confirm Orisys status is available and fixed mode shows DDJX01.
-5. Use Next / Revert / New Sample Reset on the left workflow panel.
-6. Start preview with camera index `0`.
-7. Confirm raw preview and processed preview update.
-8. Record a short clip and verify it appears under `dist\SensorBench\recordings`.
+4. Confirm Orisys status is available, the config dropdown lists local editable
+   sensor configs (for example `ddjx01`), and Start uses DDJX01.
+5. Confirm Search finds cameras (or logs none) and Camera still opens a
+   video-file picker. There is no Cal (.npy) field; Reset resets the Orisys
+   tracker while preview is running.
+6. Start preview with camera index `0` (or a searched index / video file).
+7. Confirm the image panel and FN/FX/FY plots update.
+8. Toggle processed/raw view and start/stop recording under
+   `dist\SensorBench\recordings`.
 
-Locale files are bundled under `_internal/config/locales/` (and can also be placed beside the EXE under `config/locales/` for overrides). Edit those JSON files to change operator-facing text without rebuilding.
+Locale files are bundled under `_internal/config/locales/` (and can also be
+placed beside the EXE under `config/locales/` for overrides). Edit those JSON
+files to change exhibition-facing text without rebuilding.
+
+## Private operator EXE (internal only)
+
+Do **not** ship `SensorBenchOperator` to customers. It includes workflow steps,
+lab `options.json`, and operator locale copy.
+
+```bat
+.\build\create_env.bat
+.\build\build_operator_exe.bat
+```
+
+Or:
+
+```bat
+powershell -NoProfile -ExecutionPolicy Bypass -File .\build\build_operator_exe.ps1
+```
+
+Output:
+
+```text
+dist/SensorBenchOperator/SensorBenchOperator.exe
+```
+
+Validation:
+
+```powershell
+python tests/test_smoke.py
+python internal/tests/test_operator_smoke.py
+python build/verify_operator_dist.py
+```
+
+Manual check:
+
+1. Run `dist\SensorBenchOperator\SensorBenchOperator.exe`.
+2. Confirm the workflow/steps panel and component options appear.
+3. Confirm Start Preview / record / force curves still work with a camera.
+4. Confirm `config/options.json` and `steps/default.json` beside the EXE are editable.
+
+Source-level operator docs: [`../internal/README.md`](../internal/README.md).
diff --git a/build/build_exe.ps1 b/build/build_exe.ps1
index ada20b6..adb3ca7 100644
--- a/build/build_exe.ps1
+++ b/build/build_exe.ps1
@@ -8,6 +8,7 @@ $RepoRoot = Resolve-Path (Join-Path $PSScriptRoot "..")
 $DistDir = Join-Path $RepoRoot "dist"
 $WorkDir = Join-Path $RepoRoot "build\pyinstaller_work"
 $SpecPath = Join-Path $PSScriptRoot "sensor_bench.spec"
+$RepoConfig = Join-Path $RepoRoot "config"
 
 if (-not (Get-Command conda -ErrorAction SilentlyContinue)) {
     throw "conda was not found on PATH. Open an Anaconda Prompt or initialize conda for PowerShell."
@@ -16,10 +17,20 @@ if (-not (Get-Command conda -ErrorAction SilentlyContinue)) {
 Push-Location $RepoRoot
 try {
     conda run -n $EnvName python -m pip install --upgrade pip
+    if ($LASTEXITCODE -ne 0) { throw "pip upgrade failed in env '$EnvName'." }
+
     conda run -n $EnvName python -m pip install -e ".[pack]"
+    if ($LASTEXITCODE -ne 0) { throw "Editable install failed in env '$EnvName'." }
+
     conda run -n $EnvName python -m pip install --upgrade orisys
+    if ($LASTEXITCODE -ne 0) { throw "orisys install failed in env '$EnvName'." }
+
+    # Sync Orisys wheel sensor configs into repo config/ before packaging.
+    conda run -n $EnvName python build/sync_wheel_configs.py
+    if ($LASTEXITCODE -ne 0) { throw "Config sync failed." }
 
     conda run -n $EnvName python tests/test_smoke.py
+    if ($LASTEXITCODE -ne 0) { throw "Smoke tests failed." }
 
     if (Test-Path $WorkDir) {
         Remove-Item -Recurse -Force $WorkDir
@@ -29,14 +40,20 @@ try {
     }
 
     conda run -n $EnvName python -m PyInstaller --noconfirm --clean --distpath "$DistDir" --workpath "$WorkDir" "$SpecPath"
+    if ($LASTEXITCODE -ne 0) { throw "PyInstaller failed." }
+
+    # Public package only: copy exhibition config/. Never ship internal/ operator assets.
+    Copy-Item -Recurse -Force $RepoConfig (Join-Path $DistDir "SensorBench")
+    $InternalLeak = Join-Path $DistDir "SensorBench\internal"
+    if (Test-Path $InternalLeak) {
+        throw "Public dist must not contain internal/: $InternalLeak"
+    }
 
-    Copy-Item -Recurse -Force (Join-Path $RepoRoot "config") (Join-Path $DistDir "SensorBench")
-    Copy-Item -Recurse -Force (Join-Path $RepoRoot "steps") (Join-Path $DistDir "SensorBench")
     conda run -n $EnvName python build/verify_dist.py
+    if ($LASTEXITCODE -ne 0) { throw "Distribution verification failed." }
 
     Write-Host "Build complete: dist\SensorBench\SensorBench.exe"
 }
 finally {
     Pop-Location
 }
-
diff --git a/build/build_operator_exe.bat b/build/build_operator_exe.bat
new file mode 100644
index 0000000..3a16d99
--- /dev/null
+++ b/build/build_operator_exe.bat
@@ -0,0 +1,3 @@
+@echo off
+cd /d "%~dp0.."
+powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0build_operator_exe.ps1" %*
diff --git a/build/build_operator_exe.ps1 b/build/build_operator_exe.ps1
new file mode 100644
index 0000000..a26986a
--- /dev/null
+++ b/build/build_operator_exe.ps1
@@ -0,0 +1,78 @@
+param(
+    [string]$EnvName = "sensor-bench-build-py310"
+)
+
+$ErrorActionPreference = "Stop"
+
+$RepoRoot = Resolve-Path (Join-Path $PSScriptRoot "..")
+$DistDir = Join-Path $RepoRoot "dist"
+$WorkDir = Join-Path $RepoRoot "build\pyinstaller_work_operator"
+$SpecPath = Join-Path $PSScriptRoot "sensor_bench_operator.spec"
+$RepoConfig = Join-Path $RepoRoot "config"
+$InternalRoot = Join-Path $RepoRoot "internal"
+$DistApp = Join-Path $DistDir "SensorBenchOperator"
+
+if (-not (Get-Command conda -ErrorAction SilentlyContinue)) {
+    throw "conda was not found on PATH. Open an Anaconda Prompt or initialize conda for PowerShell."
+}
+
+Push-Location $RepoRoot
+try {
+    conda run -n $EnvName python -m pip install --upgrade pip
+    if ($LASTEXITCODE -ne 0) { throw "pip upgrade failed in env '$EnvName'." }
+
+    conda run -n $EnvName python -m pip install -e ".[pack]"
+    if ($LASTEXITCODE -ne 0) { throw "Editable install failed in env '$EnvName'." }
+
+    conda run -n $EnvName python -m pip install --upgrade orisys
+    if ($LASTEXITCODE -ne 0) { throw "orisys install failed in env '$EnvName'." }
+
+    # Sync Orisys wheel sensor configs into repo config/ before packaging.
+    conda run -n $EnvName python build/sync_wheel_configs.py
+    if ($LASTEXITCODE -ne 0) { throw "Config sync failed." }
+
+    conda run -n $EnvName python tests/test_smoke.py
+    if ($LASTEXITCODE -ne 0) { throw "Public smoke tests failed." }
+
+    conda run -n $EnvName python internal/tests/test_operator_smoke.py
+    if ($LASTEXITCODE -ne 0) { throw "Operator smoke tests failed." }
+
+    if (Test-Path $WorkDir) {
+        Remove-Item -Recurse -Force $WorkDir
+    }
+    if (Test-Path $DistApp) {
+        Remove-Item -Recurse -Force $DistApp
+    }
+
+    conda run -n $EnvName python -m PyInstaller --noconfirm --clean --distpath "$DistDir" --workpath "$WorkDir" "$SpecPath"
+    if ($LASTEXITCODE -ne 0) { throw "PyInstaller (operator) failed." }
+
+    # Editable sidecars beside the EXE: public sensor configs + operator overlays.
+    # Copy sensor JSON first, then replace locales/options/steps so public
+    # exhibition locales (no workflow) cannot win over operator catalogs.
+    $DistConfig = Join-Path $DistApp "config"
+    $DistLocales = Join-Path $DistConfig "locales"
+    $DistSteps = Join-Path $DistApp "steps"
+    if (Test-Path $DistConfig) {
+        Remove-Item -Recurse -Force $DistConfig
+    }
+    if (Test-Path $DistSteps) {
+        Remove-Item -Recurse -Force $DistSteps
+    }
+    Copy-Item -Recurse -Force $RepoConfig $DistConfig
+    Copy-Item -Force (Join-Path $InternalRoot "config\options.json") (Join-Path $DistConfig "options.json")
+    if (Test-Path $DistLocales) {
+        Remove-Item -Recurse -Force $DistLocales
+    }
+    Copy-Item -Recurse -Force (Join-Path $InternalRoot "config\locales") $DistLocales
+    Copy-Item -Recurse -Force (Join-Path $InternalRoot "steps") $DistSteps
+
+    conda run -n $EnvName python build/verify_operator_dist.py
+    if ($LASTEXITCODE -ne 0) { throw "Operator distribution verification failed." }
+
+    Write-Host "Build complete: dist\SensorBenchOperator\SensorBenchOperator.exe"
+    Write-Host "INTERNAL USE ONLY - do not ship this folder to customers."
+}
+finally {
+    Pop-Location
+}
diff --git a/build/sensor_bench.spec b/build/sensor_bench.spec
index 9a6e13b..f81477f 100644
--- a/build/sensor_bench.spec
+++ b/build/sensor_bench.spec
@@ -11,13 +11,16 @@ work_dir = repo_root / "build" / "pyinstaller_work"
 
 datas = [
     (str(repo_root / "config"), "config"),
-    (str(repo_root / "steps"), "steps"),
 ]
 binaries = []
 hiddenimports = [
     "sensor_bench.main",
-    "sensor_bench.app",
+    "sensor_bench.exhibition_app",
     "sensor_bench.acquisition",
+    "sensor_bench.dd06_acquisition",
+    "sensor_bench.roi_geometry",
+    "sensor_bench.camera_discovery",
+    "sensor_bench.force_calibration",
     "sensor_bench.config_loader",
     "sensor_bench.i18n",
     "sensor_bench.paths",
@@ -50,6 +53,8 @@ excludes = [
     "pytest",
     "pip",
     "wheel",
+    "sensor_bench_operator",
+    "sensor_bench.app",
 ]
 
 a = Analysis(
@@ -95,4 +100,3 @@ coll = COLLECT(
     upx_exclude=[],
     name="SensorBench",
 )
-
diff --git a/build/sensor_bench_operator.spec b/build/sensor_bench_operator.spec
new file mode 100644
index 0000000..f0ce977
--- /dev/null
+++ b/build/sensor_bench_operator.spec
@@ -0,0 +1,110 @@
+# -*- mode: python ; coding: utf-8 -*-
+
+from pathlib import Path
+
+from PyInstaller.utils.hooks import collect_all, collect_submodules
+
+
+repo_root = Path.cwd()
+src_dir = repo_root / "src"
+operator_src = repo_root / "internal" / "src"
+work_dir = repo_root / "build" / "pyinstaller_work_operator"
+
+datas = [
+    # Operator-owned options / locales / workflow steps (private).
+    (str(repo_root / "internal" / "config"), "config"),
+    (str(repo_root / "internal" / "steps"), "steps"),
+    # Public sensor JSON configs (ddjx01, mini, …) for the shared acquisition path.
+    (str(repo_root / "config"), "config"),
+]
+binaries = []
+hiddenimports = [
+    "sensor_bench_operator",
+    "sensor_bench_operator.app",
+    "sensor_bench_operator.paths",
+    "sensor_bench.main",
+    "sensor_bench.exhibition_app",
+    "sensor_bench.acquisition",
+    "sensor_bench.dd06_acquisition",
+    "sensor_bench.roi_geometry",
+    "sensor_bench.camera_discovery",
+    "sensor_bench.force_calibration",
+    "sensor_bench.config_loader",
+    "sensor_bench.i18n",
+    "sensor_bench.paths",
+    "sensor_bench.plot_history",
+    "sensor_bench.recorder",
+    "orisys",
+    "orisys_blend",
+    "scipy.fft",
+    "scipy.ndimage",
+    "scipy.sparse.linalg",
+    "numba",
+    "llvmlite",
+]
+
+for package in ("PyQt5", "pyqtgraph", "cv2", "orisys", "orisys_blend", "numba", "llvmlite"):
+    pkg_datas, pkg_binaries, pkg_hidden = collect_all(package)
+    datas += pkg_datas
+    binaries += pkg_binaries
+    hiddenimports += pkg_hidden
+
+hiddenimports += collect_submodules("orisys_blend")
+hiddenimports += collect_submodules("sensor_bench")
+hiddenimports += collect_submodules("sensor_bench_operator")
+
+excludes = [
+    "cupy",
+    "cupyx",
+    "pyopencl",
+    "open3d",
+    "matplotlib",
+    "tkinter",
+    "pytest",
+    "pip",
+    "wheel",
+]
+
+a = Analysis(
+    [str(repo_root / "internal" / "run_operator.py")],
+    pathex=[str(repo_root), str(src_dir), str(operator_src)],
+    binaries=binaries,
+    datas=datas,
+    hiddenimports=hiddenimports,
+    hookspath=[],
+    hooksconfig={},
+    runtime_hooks=[],
+    excludes=excludes,
+    noarchive=False,
+    optimize=0,
+)
+
+pyz = PYZ(a.pure)
+
+exe = EXE(
+    pyz,
+    a.scripts,
+    [],
+    exclude_binaries=True,
+    name="SensorBenchOperator",
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=True,
+    console=False,
+    disable_windowed_traceback=False,
+    argv_emulation=False,
+    target_arch=None,
+    codesign_identity=None,
+    entitlements_file=None,
+)
+
+coll = COLLECT(
+    exe,
+    a.binaries,
+    a.datas,
+    strip=False,
+    upx=True,
+    upx_exclude=[],
+    name="SensorBenchOperator",
+)
diff --git a/build/sync_wheel_configs.py b/build/sync_wheel_configs.py
new file mode 100644
index 0000000..22b2a08
--- /dev/null
+++ b/build/sync_wheel_configs.py
@@ -0,0 +1,46 @@
+"""Copy Orisys wheel sensor JSON configs into repo config/ (exclude options.json)."""
+
+from __future__ import annotations
+
+import shutil
+import sys
+from pathlib import Path
+
+
+def wheel_config_dir() -> Path:
+    import orisys
+
+    inner_pkg = Path(orisys.__file__).resolve().parent
+    for candidate in (inner_pkg / "configs", inner_pkg.parent / "configs"):
+        if candidate.is_dir() and any(candidate.glob("*.json")):
+            return candidate
+    return inner_pkg.parent / "configs"
+
+
+def sync_configs(repo_root: Path) -> int:
+    src = wheel_config_dir()
+    if not src.is_dir():
+        print(f"Orisys wheel configs directory not found: {src}", file=sys.stderr)
+        return 1
+
+    dst = repo_root / "config"
+    dst.mkdir(parents=True, exist_ok=True)
+
+    copied = 0
+    for path in sorted(src.glob("*.json")):
+        if path.stem.lower() == "options":
+            continue
+        shutil.copy2(path, dst / path.name)
+        copied += 1
+
+    print(f"Synced {copied} config(s) from {src} to {dst}")
+    return 0
+
+
+def main() -> int:
+    repo_root = Path(__file__).resolve().parents[1]
+    return sync_configs(repo_root)
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
diff --git a/build/verify_dist.py b/build/verify_dist.py
index 17e68eb..3f57417 100644
--- a/build/verify_dist.py
+++ b/build/verify_dist.py
@@ -1,7 +1,8 @@
-"""Verify the PyInstaller onedir output has the expected portable layout."""
+"""Verify the public PyInstaller onedir output and reject internal artifacts."""
 
 from __future__ import annotations
 
+import json
 import sys
 from pathlib import Path
 
@@ -9,23 +10,108 @@ from pathlib import Path
 ROOT = Path(__file__).resolve().parents[1]
 DIST = ROOT / "dist" / "SensorBench"
 
+# Paths / substrings that must never appear in a public customer build.
+FORBIDDEN_RELATIVE_PATHS = (
+    "steps",
+    "steps/default.json",
+    "config/options.json",
+    "internal",
+)
+
+FORBIDDEN_NAME_FRAGMENTS = (
+    "sensor_bench_operator",
+    "sensor_bench.app",
+    "operator-ui",
+)
+
+FORBIDDEN_LOCALE_KEYS = (
+    "workflow",
+)
+
+FORBIDDEN_TEXT_SNIPPETS = (
+    "Inspection Workflow",
+    "检测流程",
+    "新样品",
+    "冯总",
+    "operator-ui",
+)
+
 
 def require(path: Path) -> None:
     if not path.exists():
         raise FileNotFoundError(f"Missing build artifact: {path}")
 
 
+def forbid(path: Path, *, reason: str) -> None:
+    if path.exists():
+        raise RuntimeError(f"Public dist must not include {reason}: {path}")
+
+
+def _iter_text_files(root: Path) -> list[Path]:
+    files: list[Path] = []
+    for path in root.rglob("*"):
+        if not path.is_file():
+            continue
+        if path.suffix.lower() in {".json", ".txt", ".md", ".py", ".toc", ".html"}:
+            files.append(path)
+        # PyInstaller may leave .pyc / .py modules under _internal
+        if path.suffix.lower() == ".pyc" and "operator" in path.name.lower():
+            files.append(path)
+    return files
+
+
+def _assert_no_forbidden_names(root: Path) -> None:
+    for path in root.rglob("*"):
+        rel = path.relative_to(root).as_posix().lower()
+        name = path.name.lower()
+        for fragment in FORBIDDEN_NAME_FRAGMENTS:
+            if fragment.lower() in rel or fragment.lower() in name:
+                raise RuntimeError(
+                    f"Public dist contains forbidden name '{fragment}': {path}"
+                )
+
+
+def _assert_locale_public(path: Path) -> None:
+    data = json.loads(path.read_text(encoding="utf-8"))
+    for key in FORBIDDEN_LOCALE_KEYS:
+        if key in data:
+            raise RuntimeError(f"Public locale {path.name} still contains '{key}'")
+    status = data.get("status")
+    if isinstance(status, dict) and "workflow_done" in status:
+        raise RuntimeError(f"Public locale {path.name} still contains status.workflow_done")
+
+
+def _assert_no_forbidden_text(root: Path) -> None:
+    for path in _iter_text_files(root):
+        try:
+            text = path.read_text(encoding="utf-8", errors="ignore")
+        except Exception:  # noqa: BLE001
+            continue
+        for snippet in FORBIDDEN_TEXT_SNIPPETS:
+            if snippet in text:
+                raise RuntimeError(
+                    f"Public dist text contains forbidden snippet {snippet!r} in {path}"
+                )
+
+
 def main() -> int:
     require(DIST / "SensorBench.exe")
-    require(DIST / "config" / "options.json")
     require(DIST / "config" / "locales" / "zh_CN.json")
     require(DIST / "config" / "locales" / "en_US.json")
-    require(DIST / "steps" / "default.json")
+    require(DIST / "config" / "ddjx01.json")
     require(DIST / "_internal")
-    print(f"Verified SensorBench dist layout: {DIST}")
+
+    for rel in FORBIDDEN_RELATIVE_PATHS:
+        forbid(DIST / rel, reason=rel)
+
+    _assert_no_forbidden_names(DIST)
+    _assert_locale_public(DIST / "config" / "locales" / "zh_CN.json")
+    _assert_locale_public(DIST / "config" / "locales" / "en_US.json")
+    _assert_no_forbidden_text(DIST / "config")
+
+    print(f"Verified public SensorBench dist layout: {DIST}")
     return 0
 
 
 if __name__ == "__main__":
     raise SystemExit(main())
-
diff --git a/build/verify_operator_dist.py b/build/verify_operator_dist.py
new file mode 100644
index 0000000..1edef59
--- /dev/null
+++ b/build/verify_operator_dist.py
@@ -0,0 +1,57 @@
+"""Verify the private SensorBenchOperator onedir layout."""
+
+from __future__ import annotations
+
+import json
+import sys
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+DIST = ROOT / "dist" / "SensorBenchOperator"
+
+
+def require(path: Path) -> None:
+    if not path.exists():
+        raise FileNotFoundError(f"Missing operator build artifact: {path}")
+
+
+def main() -> int:
+    require(DIST / "SensorBenchOperator.exe")
+    require(DIST / "_internal")
+    require(DIST / "steps" / "default.json")
+    require(DIST / "config" / "options.json")
+    require(DIST / "config" / "locales" / "zh_CN.json")
+    require(DIST / "config" / "locales" / "en_US.json")
+    require(DIST / "config" / "ddjx01.json")
+
+    options = json.loads((DIST / "config" / "options.json").read_text(encoding="utf-8"))
+    if "sensor_types" not in options:
+        raise RuntimeError("Operator options.json missing sensor_types")
+
+    locale = json.loads(
+        (DIST / "config" / "locales" / "en_US.json").read_text(encoding="utf-8")
+    )
+    if "workflow" not in locale:
+        raise RuntimeError("Operator locale missing workflow section")
+    if "Inspection Workflow" not in json.dumps(locale, ensure_ascii=False):
+        # Chinese catalog may be the default UI language; English must still ship.
+        raise RuntimeError("Operator en_US locale missing Inspection Workflow title")
+
+    steps = json.loads((DIST / "steps" / "default.json").read_text(encoding="utf-8"))
+    if not steps.get("steps"):
+        raise RuntimeError("Operator steps/default.json has no steps")
+
+    # Guard against accidentally packaging the whole internal/ source tree.
+    if (DIST / "internal").exists():
+        raise RuntimeError(f"Operator dist should not nest internal/: {DIST / 'internal'}")
+    if (DIST / "src").exists():
+        raise RuntimeError(f"Operator dist should not ship raw src/: {DIST / 'src'}")
+
+    print(f"Verified internal SensorBenchOperator dist layout: {DIST}")
+    print("INTERNAL USE ONLY - do not publish to customers.")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
diff --git a/config/X-ov.json b/config/X-ov.json
new file mode 100644
index 0000000..4c966cd
--- /dev/null
+++ b/config/X-ov.json
@@ -0,0 +1,101 @@
+{
+  "name": "dd06-ov",
+  "type": "single_camera",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [
+      1280,
+      720
+    ],
+    "fps": 30,
+    "resolution_stitch": [
+      195,
+      275
+    ],
+    "source_scale": 0.4,
+    "old": [
+      672,
+      728,
+      1,
+      0.5
+    ],
+    "work": [
+      504,
+      546,
+      1
+    ],
+    "work2": [
+      420,
+      450,
+      0.8
+    ],
+    "work3": [
+      350,
+      375,
+      4,
+      0.7
+    ],
+    "work4": [
+      280,
+      300,
+      4,
+      0.4,
+      0.2
+    ]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "dis",
+    "dis_preset": "medium",
+    "dis_mode": 3,
+    "algorithm_list": [
+      "raft",
+      "dis"
+    ],
+    "hhd_downsample": 3
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold": 0.2,
+    "div_threshold": 0.022,
+    "expansion_threshold": 0.01,
+    "kernel_size": [
+      5,
+      5
+    ],
+    "denoise_sigma": 12
+  },
+  "roi": {
+    "type": "polygon",
+    "image_size": [
+      1280,
+      720
+    ],
+    "created_at": "2026-07-26T11:56:15",
+    "points": [
+      [
+        242,
+        1
+      ],
+      [
+        402,
+        597
+      ],
+      [
+        799,
+        606
+      ],
+      [
+        976,
+        2
+      ]
+    ],
+    "mask_path": "dd06-ov_mask.png",
+    "metadata": {
+      "source": "./data/dd06/0726.mp4"
+    }
+  }
+}
diff --git a/config/bench_theme.json b/config/bench_theme.json
new file mode 100644
index 0000000..8a8e42a
--- /dev/null
+++ b/config/bench_theme.json
@@ -0,0 +1,20 @@
+{
+  "colors": {
+    "window_bg": "#1e1f22",
+    "panel_bg": "#121316",
+    "arrow_canvas_hex": "#121316"
+  },
+  "arrow_draw": {
+    "threshold": 2,
+    "grid_spacing": 20,
+    "arrow_scale": 0.5,
+    "below_threshold_color_bgr": [160, 160, 160]
+  },
+  "plot": {
+    "background": "#121316",
+    "curve_colors": ["#8ab4f8", "#34a853", "#fbbc04"]
+  },
+  "mesh": {
+    "background_rgb": [18, 19, 22]
+  }
+}
diff --git a/config/box.json b/config/box.json
new file mode 100644
index 0000000..af88413
--- /dev/null
+++ b/config/box.json
@@ -0,0 +1,46 @@
+{
+  "name": "prototype",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [1920, 1080],
+    "fps": 30,
+    "units": 15,
+    "units_used": 9, 
+    "resolution_stitch": [365, 365],
+    "stitch_res_list": [365,263,123,63]
+  },
+  "stitcher": {
+    "min_area_frac": 0.01,
+    "max_area_frac": 0.05,
+    "max_aspect_ratio": 50,
+    "index": [1,2,3,6,7,8,11,12,13],
+    "margin": 10,
+    "nominal_ov_pos": 100,
+    "n": [3,3],
+    "row_tol": 0.6,
+    "box_size": [250, 250],
+    "blend":"numba",
+    "blend_list": ["numpy", "numba","none"]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "dis",
+    "dis_preset": "medium",
+    "dis_mode": 3,
+    "algorithm_list": ["raft", "dis"],
+    "hhd_downsample": 3
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold":5,
+    "div_threshold":0.05,
+    "expansion_threshold": 0.01,
+    "kernel_size": [5,5],
+    "denoise_sigma": 12
+  }
+}
+
+
diff --git a/config/compound_eye.png b/config/compound_eye.png
index 87e0c4c..4d2160a 100644
Binary files a/config/compound_eye.png and b/config/compound_eye.png differ
diff --git a/config/dd02-ov.json b/config/dd02-ov.json
new file mode 100644
index 0000000..545a74a
--- /dev/null
+++ b/config/dd02-ov.json
@@ -0,0 +1,35 @@
+{
+  "name": "dd02-ov",
+  "type": "single_camera",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [1280, 720],
+    "fps": 30,
+    "resolution_stitch": [420, 450],
+    "source_scale": 0.4,
+    "old":[672, 728, 1,0.5],
+    "work": [504, 546,1],
+    "work2": [420, 450,0.8],
+    "work3": [350, 375,4,0.7],
+    "work4": [280, 300,4,0.4,0.2]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "dis",
+    "dis_preset": "medium",
+    "dis_mode": 3,
+    "algorithm_list": ["raft", "dis"],
+    "hhd_downsample": 5
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold": 0.2,
+    "div_threshold": 0.022,
+    "expansion_threshold": 0.01,
+    "kernel_size": [5, 5],
+    "denoise_sigma": 12
+  }
+}
diff --git a/config/dd06-ov-0810.json b/config/dd06-ov-0810.json
new file mode 100644
index 0000000..209d274
--- /dev/null
+++ b/config/dd06-ov-0810.json
@@ -0,0 +1,101 @@
+{
+  "name": "dd06-ov",
+  "type": "single_camera",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [
+      1280,
+      720
+    ],
+    "fps": 30,
+    "resolution_stitch": [
+      195,
+      275
+    ],
+    "source_scale": 0.4,
+    "old": [
+      672,
+      728,
+      1,
+      0.5
+    ],
+    "work": [
+      504,
+      546,
+      1
+    ],
+    "work2": [
+      420,
+      450,
+      0.8
+    ],
+    "work3": [
+      350,
+      375,
+      4,
+      0.7
+    ],
+    "work4": [
+      280,
+      300,
+      4,
+      0.4,
+      0.2
+    ]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "dis",
+    "dis_preset": "medium",
+    "dis_mode": 3,
+    "algorithm_list": [
+      "raft",
+      "dis"
+    ],
+    "hhd_downsample": 3
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold": 0.2,
+    "div_threshold": 0.022,
+    "expansion_threshold": 0.01,
+    "kernel_size": [
+      5,
+      5
+    ],
+    "denoise_sigma": 12
+  },
+  "roi": {
+    "type": "polygon",
+    "image_size": [
+      1280,
+      720
+    ],
+    "points": [
+      [
+        628,
+        532
+      ],
+      [
+        1145,
+        694
+      ],
+      [
+        1161,
+        8
+      ],
+      [
+        630,
+        126
+      ]
+    ],
+    "created_at": "2026-08-10T14:26:31",
+    "mask_path": "dd06-ov-0810_mask.png",
+    "metadata": {
+      "source": ".\\data\\dd06\\2026-08-10-142316.webm"
+    }
+  }
+}
diff --git a/config/dd06-ov.json b/config/dd06-ov.json
new file mode 100644
index 0000000..4c966cd
--- /dev/null
+++ b/config/dd06-ov.json
@@ -0,0 +1,101 @@
+{
+  "name": "dd06-ov",
+  "type": "single_camera",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [
+      1280,
+      720
+    ],
+    "fps": 30,
+    "resolution_stitch": [
+      195,
+      275
+    ],
+    "source_scale": 0.4,
+    "old": [
+      672,
+      728,
+      1,
+      0.5
+    ],
+    "work": [
+      504,
+      546,
+      1
+    ],
+    "work2": [
+      420,
+      450,
+      0.8
+    ],
+    "work3": [
+      350,
+      375,
+      4,
+      0.7
+    ],
+    "work4": [
+      280,
+      300,
+      4,
+      0.4,
+      0.2
+    ]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "dis",
+    "dis_preset": "medium",
+    "dis_mode": 3,
+    "algorithm_list": [
+      "raft",
+      "dis"
+    ],
+    "hhd_downsample": 3
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold": 0.2,
+    "div_threshold": 0.022,
+    "expansion_threshold": 0.01,
+    "kernel_size": [
+      5,
+      5
+    ],
+    "denoise_sigma": 12
+  },
+  "roi": {
+    "type": "polygon",
+    "image_size": [
+      1280,
+      720
+    ],
+    "created_at": "2026-07-26T11:56:15",
+    "points": [
+      [
+        242,
+        1
+      ],
+      [
+        402,
+        597
+      ],
+      [
+        799,
+        606
+      ],
+      [
+        976,
+        2
+      ]
+    ],
+    "mask_path": "dd06-ov_mask.png",
+    "metadata": {
+      "source": "./data/dd06/0726.mp4"
+    }
+  }
+}
diff --git a/config/ddjx01_480p.json b/config/ddjx01_480p.json
new file mode 100644
index 0000000..e58f998
--- /dev/null
+++ b/config/ddjx01_480p.json
@@ -0,0 +1,46 @@
+{
+  "name": "prototype",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [854, 480],
+    "fps": 30,
+    "units": 15,
+    "units_used": 9, 
+    "resolution_stitch": [123, 123],
+    "stitch_res_list": [365,263,123,63]
+  },
+  "stitcher": {
+    "min_area_frac": 0.01,
+    "max_area_frac": 0.08,
+    "max_aspect_ratio": 100,
+    "index": [1,2,3,6,7,8,11,12,13],
+    "margin": 4,
+    "nominal_ov_pos": 44,
+    "n": [3,3],
+    "row_tol": 0.6,
+    "box_size": [98, 98],
+    "blend":"numpy",
+    "blend_list": ["numpy", "numba","none"]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "dis",
+    "dis_preset": "medium",
+    "dis_mode": 2,
+    "algorithm_list": ["raft", "dis"],
+    "hhd_downsample": 3
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold":1,
+    "div_threshold":0.02,
+    "expansion_threshold": 0.01,
+    "kernel_size": [5,5],
+    "denoise_sigma": 6
+  }
+}
+
+
diff --git a/config/ddjx01_q6a.json b/config/ddjx01_q6a.json
new file mode 100644
index 0000000..08c7f59
--- /dev/null
+++ b/config/ddjx01_q6a.json
@@ -0,0 +1,48 @@
+{
+    "name": "prototype",
+    "version": "1.0",
+    "camera": {
+      "resolution_raw": [1280, 720],
+      "fps": 30,
+      "units": 15,
+      "units_used": 9, 
+      "resolution_stitch": [263, 263],
+      "stitch_res_list": [365,263,123,63]
+    },
+    "stitcher": {
+      "min_area_frac": 0.01,
+      "max_area_frac": 0.04,
+      "max_aspect_ratio": 25,
+      "index": [1,2,3,6,7,8,11,12,13],
+      "margin": 10,
+      "nominal_ov_pos": 67,
+      "n": [3,3],
+      "row_tol": 0.6,
+      "box_size": [180, 180],
+      "blend":"numpy",
+      "blend_list": ["numpy", "numba","none"]
+    },
+    "tracker": {
+      "adaptive": true,
+      "lower_threshold": 12.0,
+      "upper_threshold": 18.0,
+      "loop_closure_interval": 1,
+      "algorithm": "dis",
+      "dis_preset": "medium",
+      "dis_mode": 3,
+      "algorithm_list": ["raft", "dis"],
+      "hhd_downsample": 1,
+      "backend": "cpu"
+    },
+    "contact": {
+      "min_contour_area": 3000,
+      "flow_threshold":1,
+      "div_threshold":0.02,
+      "expansion_threshold": 0.01,
+      "kernel_size": [5,5],
+      "denoise_sigma": 10
+    }
+  }
+  
+  
+  
\ No newline at end of file
diff --git a/config/ddjx01_wuxi.json b/config/ddjx01_wuxi.json
new file mode 100644
index 0000000..cbbe434
--- /dev/null
+++ b/config/ddjx01_wuxi.json
@@ -0,0 +1,47 @@
+{
+  "name": "prototype",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [1280, 720],
+    "fps": 15,
+    "units": 15,
+    "units_used": 9, 
+    "resolution_stitch": [263, 263],
+    "stitch_res_list": [365,263,123,63]
+  },
+  "stitcher": {
+    "min_area_frac": 0.01,
+    "max_area_frac": 0.04,
+    "max_aspect_ratio": 25,
+    "index": [1,2,3,6,7,8,11,12,13],
+    "margin": 10,
+    "nominal_ov_pos": 67,
+    "n": [3,3],
+    "row_tol": 0.6,
+    "box_size": [180, 180],
+    "blend":"numpy",
+    "blend_list": ["numpy", "numba","none"]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "dis",
+    "dis_preset": "medium",
+    "dis_mode": 3,
+    "algorithm_list": ["raft", "dis"],
+    "hhd_downsample": 3,
+    "backend": "cpu"
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold":1,
+    "div_threshold":0.02,
+    "expansion_threshold": 0.01,
+    "kernel_size": [5,5],
+    "denoise_sigma": 10
+  }
+}
+
+
diff --git a/config/finger.json b/config/finger.json
new file mode 100644
index 0000000..d5f6264
--- /dev/null
+++ b/config/finger.json
@@ -0,0 +1,35 @@
+{
+  "name": "dd02-ov",
+  "type": "single_camera",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [1280, 720],
+    "fps": 30,
+    "resolution_stitch": [280, 300],
+    "source_scale": 0.4,
+    "old":[672, 728, 1,0.5],
+    "work": [504, 546,1],
+    "work2": [420, 450,0.8],
+    "work3": [350, 375,4,0.7],
+    "work4": [280, 300,4,0.4,0.2]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "dis",
+    "dis_preset": "medium",
+    "dis_mode": 1,
+    "algorithm_list": ["raft", "dis"],
+    "hhd_downsample": 5
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold": 0.2,
+    "div_threshold": 0.022,
+    "expansion_threshold": 0.01,
+    "kernel_size": [5, 5],
+    "denoise_sigma": 12
+  }
+}
diff --git a/config/locales/en_US.json b/config/locales/en_US.json
index 29bf5ec..d876fa1 100644
--- a/config/locales/en_US.json
+++ b/config/locales/en_US.json
@@ -5,65 +5,26 @@
     "lang_zh": "中文",
     "lang_en": "English"
   },
-  "panels": {
-    "instructions": "Instructions",
-    "options": "Sensor Component Types",
-    "camera": "Camera (Orisys SDK)",
-    "recording": "Recording",
-    "raw": "Raw Image (sensor.frame)",
-    "processed": "Processed Image (Sensor.get_img)",
-    "force": "Force Curves"
-  },
   "labels": {
-    "sensor_type": "Sensor type",
-    "elastomer": "Elastomer",
-    "cmos": "CMOS",
-    "marker": "Marker",
-    "indentor": "Indenter",
-    "platform": "Platform",
-    "camera_index": "Camera index",
-    "backend": "Backend",
     "fixed_mode": "Fixed mode: {mode}",
     "fixed_mode_unset": "Fixed mode: set config path",
     "fixed_mode_invalid": "Fixed mode: invalid config ({error})",
-    "requested": "Requested",
-    "actual": "Actual",
-    "capture_fps": "Capture FPS",
-    "render_fps": "Render FPS",
-    "proc_ms": "Proc ms",
-    "fn": "FN",
-    "fx": "FX",
-    "fy": "FY",
-    "no_preview": "No preview",
-    "processed_placeholder": "Start Preview to show Orisys output",
-    "not_recording": "Not recording",
-    "force_plot": "Force"
+    "no_preview": "No preview"
   },
   "buttons": {
     "config": "Config…",
-    "cal": "Cal…",
-    "start_preview": "Start Preview",
-    "stop_preview": "Stop Preview",
-    "browse": "Browse…",
     "start_record": "Start Record",
-    "stop_record": "Stop Record",
-    "next": "Next",
-    "revert": "Revert",
-    "reset": "New Sample / Reset"
+    "stop_record": "Stop Record"
   },
   "placeholders": {
-    "config": "DDJX01 config JSON path or name",
-    "cal": "Optional calibration .npy"
+    "config": "Select an installed Orisys config, or browse a JSON file"
   },
   "dialogs": {
     "select_config": "Select config JSON",
-    "select_cal": "Select calibration",
-    "select_recordings": "Select recordings folder",
     "orisys_title": "Orisys",
     "orisys_required": "orisys SDK is required for preview.\n\n{detail}",
     "config_title": "Config",
     "config_required": "Select a DDJX01 config JSON first.",
-    "config_invalid": "Config could not be loaded.",
     "capture_title": "Capture",
     "recording_title": "Recording",
     "no_frame": "No frame yet."
@@ -76,48 +37,47 @@
     "preview_stopped": "Preview stopped.",
     "capture_error": "Capture error: {message}",
     "frame_info": "{raw_w}x{raw_h} raw / {proc_w}x{proc_h} processed @ {fps:.1f} FPS",
-    "recording": "Recording… {name}\nOptions: sensor={sensor_type}, elastomer={elastomer}, cmos={cmos}, marker={marker}, indenter={indentor}, platform={platform}",
-    "recording_frames": "Recording… {name}\nFrames: {count}",
-    "saved": "Saved {count} frames → {path}",
-    "workflow_done": "All steps completed. Click New Sample / Reset for the next unit."
+    "saved": "Saved {count} frames → {path}"
   },
-  "workflow": {
-    "title": "Sensor Bench Inspection Workflow",
-    "current_marker": "Current",
-    "done_marker": "Done",
-    "steps": {
-      "power_on": {
-        "title": "Power on and connect",
-        "body": "Connect the sensor USB cable and wait until Windows recognizes the device."
-      },
-      "select_camera": {
-        "title": "Start Orisys preview",
-        "body": "Confirm camera index (usually 0) and DDJX01 config, then click Start Preview. Format is fixed by the Orisys config (1920x1080 @ 30)."
-      },
-      "set_options": {
-        "title": "Set sensor options",
-        "body": "Choose elastomer type, CMOS type, and marker type that match the physical unit under test."
-      },
-      "check_preview": {
-        "title": "Check raw and processed preview",
-        "body": "Confirm raw frame is ~1920x1080 and processed Orisys image is ~365x365. Inspect focus, lighting, and image cleanliness."
-      },
-      "record": {
-        "title": "Record raw data",
-        "body": "Choose a storage folder, start recording, exercise the sensor, then stop recording."
-      },
-      "review_curves": {
-        "title": "Review performance curves",
-        "body": "Watch capture/render FPS and force curves for drops or unstable exposure before signing off."
-      },
-      "sensitivity": {
-        "title": "Sensitivity test",
-        "body": "Choose a small indenter and apply a 2g weight, then watch for a clear force-curve change."
-      },
-      "max_load": {
-        "title": "Maximum load test",
-        "body": "Choose a flat plate indenter and apply weights from 10g to 500g to watch for curve changes. Use 10g to 500g for MINI and 2kg for BOX."
-      }
-    }
+  "exhibition": {
+    "title": "Sensor Bench Exhibition",
+    "btn_search": "Search",
+    "btn_camera": "Camera",
+    "btn_config": "Config",
+    "btn_start": "Start",
+    "btn_starting": "Starting…",
+    "btn_stop": "Pause",
+    "btn_reset": "Reset",
+    "btn_start_record": "Start Record",
+    "btn_stop_record": "Stop Record",
+    "show_log": "Show log panel",
+    "view": "View",
+    "view_pure_color": "Arrows on solid bg",
+    "view_captured": "Arrows on captured",
+    "view_processed": "Processed image",
+    "view_raw": "Raw image",
+    "sensor_type": "Sensor",
+    "sensor_orisys": "ORY-BOX/ORY-MINI",
+    "sensor_dd06": "ORY-X",
+    "sensor_switched": "Switched sensor type: {sensor}",
+    "placeholder_camera": "Camera index or video path",
+    "dialog_video": "Select video file",
+    "camera_found": "Found {count} camera(s): {names}",
+    "camera_none": "No usable camera found. Click Search to rescan, or use Camera to pick a video file.",
+    "plot_fn": "Normal Force FN",
+    "plot_fx": "Shear Force FX",
+    "plot_fy": "Shear Force FY",
+    "reset_done": "Tracker reset.",
+    "reset_need_start": "Start the sensor before resetting the tracker.",
+    "reset_failed": "Reset failed: {message}",
+    "force_fn_n": "Normal force (N)={value:.6f}",
+    "recording_started": "Recording started: {name}",
+    "hints": "Keys: Q quit | R reset tracker | S start record | E stop record | ESC fullscreen",
+    "menu_help": "Help",
+    "menu_about": "About",
+    "about_title": "About Sensor Bench",
+    "about_body": "Sensor Bench Exhibition\nVersion: {app_version}\nOrisys: {orisys_version}\n\nOrisys-Tech",
+    "config_dir_tip": "Installed configs dir: {path}\nSelected: {selected}",
+    "config_dir_missing": "Installed Orisys configs directory not found. Use Config… to browse a local JSON."
   }
 }
diff --git a/config/locales/zh_CN.json b/config/locales/zh_CN.json
index bd7e432..42da359 100644
--- a/config/locales/zh_CN.json
+++ b/config/locales/zh_CN.json
@@ -5,65 +5,26 @@
     "lang_zh": "中文",
     "lang_en": "English"
   },
-  "panels": {
-    "instructions": "操作步骤",
-    "options": "传感器组件类型",
-    "camera": "相机（Orisys SDK）",
-    "recording": "录制",
-    "raw": "原始图像（sensor.frame）",
-    "processed": "处理后图像（Sensor.get_img）",
-    "force": "力曲线"
-  },
   "labels": {
-    "sensor_type": "传感器类型",
-    "elastomer": "弹性体",
-    "cmos": "CMOS",
-    "marker": "图案",
-    "indentor": "压头",
-    "platform": "平台",
-    "camera_index": "相机索引",
-    "backend": "后端",
     "fixed_mode": "固定模式：{mode}",
     "fixed_mode_unset": "固定模式：请设置配置路径",
     "fixed_mode_invalid": "固定模式：配置无效（{error}）",
-    "requested": "请求",
-    "actual": "实际",
-    "capture_fps": "采集 FPS",
-    "render_fps": "渲染 FPS",
-    "proc_ms": "处理 ms",
-    "fn": "FN",
-    "fx": "FX",
-    "fy": "FY",
-    "no_preview": "暂无预览",
-    "processed_placeholder": "点击开始预览以显示 Orisys 输出",
-    "not_recording": "未在录制",
-    "force_plot": "力"
+    "no_preview": "暂无预览"
   },
   "buttons": {
     "config": "配置…",
-    "cal": "标定…",
-    "start_preview": "开始预览",
-    "stop_preview": "停止预览",
-    "browse": "浏览…",
     "start_record": "开始录制",
-    "stop_record": "停止录制",
-    "next": "下一步",
-    "revert": "上一步",
-    "reset": "新样品 / 重置"
+    "stop_record": "停止录制"
   },
   "placeholders": {
-    "config": "DDJX01 配置 JSON 路径或名称",
-    "cal": "可选标定文件 .npy"
+    "config": "从已安装 Orisys 配置中选择，或浏览 JSON"
   },
   "dialogs": {
     "select_config": "选择配置 JSON",
-    "select_cal": "选择标定文件",
-    "select_recordings": "选择录制文件夹",
     "orisys_title": "Orisys",
     "orisys_required": "预览需要 Orisys SDK。\n\n{detail}",
     "config_title": "配置",
     "config_required": "请先选择 DDJX01 配置 JSON。",
-    "config_invalid": "无法加载配置。",
     "capture_title": "采集",
     "recording_title": "录制",
     "no_frame": "尚无可用帧。"
@@ -76,48 +37,47 @@
     "preview_stopped": "预览已停止。",
     "capture_error": "采集错误：{message}",
     "frame_info": "{raw_w}x{raw_h} 原始 / {proc_w}x{proc_h} 处理 @ {fps:.1f} FPS",
-    "recording": "正在录制… {name}\n选项：传感器={sensor_type}，弹性体={elastomer}，CMOS={cmos}，标记={marker}，压头={indentor}，平台={platform}",
-    "recording_frames": "正在录制… {name}\n帧数：{count}",
-    "saved": "已保存 {count} 帧 → {path}",
-    "workflow_done": "全部步骤已完成。可点击“新样品 / 重置”开始下一个样品。"
+    "saved": "已保存 {count} 帧 → {path}"
   },
-  "workflow": {
-    "title": "传感器检测流程",
-    "current_marker": "当前",
-    "done_marker": "已完成",
-    "steps": {
-      "power_on": {
-        "title": "开机并连接",
-        "body": "连接传感器 USB 线缆，等待 Windows 识别设备。"
-      },
-      "select_camera": {
-        "title": "启动 Orisys 预览",
-        "body": "确认相机索引（通常为 0）和 DDJX01 配置，然后点击开始预览。格式由 Orisys 配置固定（1920x1080 @ 30）。"
-      },
-      "set_options": {
-        "title": "设置传感器选项",
-        "body": "选择与当前被测实物一致的弹性体类型、CMOS 类型和标记类型。"
-      },
-      "check_preview": {
-        "title": "检查原始与处理后预览",
-        "body": "确认原始画面约为 1920x1080，处理后 Orisys 图像约为 365x365。检查对焦、光照和画面清洁度。"
-      },
-      "record": {
-        "title": "录制原始数据",
-        "body": "选择存储文件夹，开始录制，操作传感器，然后停止录制。"
-      },
-      "review_curves": {
-        "title": "查看性能曲线",
-        "body": "观察采集/渲染 FPS 与力曲线，确认无明显掉帧或曝光不稳定后再签字确认。"
-      },
-      "sensitivity": {
-        "title": "灵敏度测试",
-        "body": "选择小压头，并加载 2g 砝码，观察力曲线是否有清晰变化。"
-      },
-      "max_load": {
-        "title": "最大载荷测试",
-        "body": "选择平板压头，并加载 10g 到 500g 的砝码观察曲线变化；MINI 使用 10g 到 500g，BOX 使用 2kg。"
-      }
-    }
+  "exhibition": {
+    "title": "Sensor Bench 展示端",
+    "btn_search": "搜索",
+    "btn_camera": "摄像机",
+    "btn_config": "配置",
+    "btn_start": "启动",
+    "btn_starting": "启动中…",
+    "btn_stop": "暂停",
+    "btn_reset": "重置",
+    "btn_start_record": "开始录像",
+    "btn_stop_record": "结束录像",
+    "show_log": "显示日志面板",
+    "view": "画面",
+    "view_pure_color": "纯色背景箭头",
+    "view_captured": "采集图像箭头",
+    "view_processed": "处理后图像",
+    "view_raw": "原始图像",
+    "sensor_type": "传感器",
+    "sensor_orisys": "ORY-BOX/ORY-MINI",
+    "sensor_dd06": "ORY-X",
+    "sensor_switched": "已切换传感器类型：{sensor}",
+    "placeholder_camera": "摄像头编号或视频路径",
+    "dialog_video": "选择视频文件",
+    "camera_found": "已发现 {count} 路摄像机：{names}",
+    "camera_none": "未发现可用摄像机。可点击“搜索”重扫，或通过“摄像机”选择视频文件。",
+    "plot_fn": "法向力 FN",
+    "plot_fx": "切向力 FX",
+    "plot_fy": "切向力 FY",
+    "reset_done": "追踪器已重置。",
+    "reset_need_start": "请先启动传感器后再重置追踪器。",
+    "reset_failed": "重置失败：{message}",
+    "force_fn_n": "法向力(N)={value:.6f}",
+    "recording_started": "开始录像：{name}",
+    "hints": "按键：Q 退出 | R 重置追踪器 | S 开始录像 | E 结束录像 | ESC 全屏",
+    "menu_help": "帮助",
+    "menu_about": "关于",
+    "about_title": "关于 Sensor Bench",
+    "about_body": "Sensor Bench 展示端\n版本：{app_version}\nOrisys：{orisys_version}\n\nOrisys-Tech",
+    "config_dir_tip": "已安装配置目录：{path}\n当前：{selected}",
+    "config_dir_missing": "未找到已安装的 Orisys 配置目录。可用“配置…”浏览本地 JSON。"
   }
 }
diff --git a/config/mini-fast.json b/config/mini-fast.json
new file mode 100644
index 0000000..cc5868f
--- /dev/null
+++ b/config/mini-fast.json
@@ -0,0 +1,47 @@
+{
+    "name": "prototype",
+    "version": "1.0",
+    "camera": {
+      "resolution_raw": [1280, 720],
+      "fps": 30,
+      "units": 15,
+      "units_used": 9, 
+      "resolution_stitch": [263, 263],
+      "stitch_res_list": [365,263,123,63]
+    },
+    "stitcher": {
+      "min_area_frac": 0.01,
+      "max_area_frac": 0.04,
+      "max_aspect_ratio": 25,
+      "index": [1,2,3,6,7,8,11,12,13],
+      "margin": 10,
+      "nominal_ov_pos": 67,
+      "n": [3,3],
+      "row_tol": 0.6,
+      "box_size": [180, 180],
+      "blend":"numpy",
+      "blend_list": ["numpy", "numba","none"]
+    },
+    "tracker": {
+      "adaptive": true,
+      "lower_threshold": 12.0,
+      "upper_threshold": 18.0,
+      "loop_closure_interval": 1,
+      "algorithm": "dis",
+      "dis_preset": "medium",
+      "dis_mode": 3,
+      "algorithm_list": ["raft", "dis"],
+      "hhd_downsample": 3
+    },
+    "contact": {
+      "min_contour_area": 3000,
+      "flow_threshold":1,
+      "div_threshold":0.02,
+      "expansion_threshold": 0.01,
+      "kernel_size": [5,5],
+      "denoise_sigma": 10
+    }
+  }
+  
+  
+  
\ No newline at end of file
diff --git a/config/mini.json b/config/mini.json
new file mode 100644
index 0000000..af88413
--- /dev/null
+++ b/config/mini.json
@@ -0,0 +1,46 @@
+{
+  "name": "prototype",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [1920, 1080],
+    "fps": 30,
+    "units": 15,
+    "units_used": 9, 
+    "resolution_stitch": [365, 365],
+    "stitch_res_list": [365,263,123,63]
+  },
+  "stitcher": {
+    "min_area_frac": 0.01,
+    "max_area_frac": 0.05,
+    "max_aspect_ratio": 50,
+    "index": [1,2,3,6,7,8,11,12,13],
+    "margin": 10,
+    "nominal_ov_pos": 100,
+    "n": [3,3],
+    "row_tol": 0.6,
+    "box_size": [250, 250],
+    "blend":"numba",
+    "blend_list": ["numpy", "numba","none"]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "dis",
+    "dis_preset": "medium",
+    "dis_mode": 3,
+    "algorithm_list": ["raft", "dis"],
+    "hhd_downsample": 3
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold":5,
+    "div_threshold":0.05,
+    "expansion_threshold": 0.01,
+    "kernel_size": [5,5],
+    "denoise_sigma": 12
+  }
+}
+
+
diff --git a/config/prototype_of3.json b/config/prototype_of3.json
new file mode 100644
index 0000000..8d94471
--- /dev/null
+++ b/config/prototype_of3.json
@@ -0,0 +1,44 @@
+{
+  "name": "prototype",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [1920, 1080],
+    "fps": 30,
+    "units": 15,
+    "units_used": 9, 
+    "resolution_stitch": [365, 365],
+    "stitch_res_list": [365,263,123,63]
+  },
+  "stitcher": {
+    "min_area_frac": 0.01,
+    "max_area_frac": 0.04,
+    "max_aspect_ratio": 100,
+    "index": [1,2,3,6,7,8,11,12,13],
+    "margin": 10,
+    "nominal_ov_pos": 100,
+    "n": [3,3],
+    "row_tol": 0.6,
+    "box_size": [220, 220]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "dis",
+    "dis_preset": "medium",
+    "dis_mode": 3,
+    "algorithm_list": ["raft", "dis"],
+    "hhd_downsample": 3
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold":1,
+    "div_threshold":0.02,
+    "expansion_threshold": 0.01,
+    "kernel_size": [5,5],
+    "denoise_sigma": 15
+  }
+}
+
+
diff --git a/config/prototype_of3_480p.json b/config/prototype_of3_480p.json
new file mode 100644
index 0000000..5c321a3
--- /dev/null
+++ b/config/prototype_of3_480p.json
@@ -0,0 +1,44 @@
+{
+  "name": "prototype",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [854, 480],
+    "fps": 30,
+    "units": 15,
+    "units_used": 9, 
+    "resolution_stitch": [123, 123],
+    "stitch_res_list": [365,263,123,63]
+  },
+  "stitcher": {
+    "min_area_frac": 0.01,
+    "max_area_frac": 0.06,
+    "max_aspect_ratio": 100,
+    "index": [1,2,3,6,7,8,11,12,13],
+    "margin": 4,
+    "nominal_ov_pos": 44,
+    "n": [3,3],
+    "row_tol": 0.6,
+    "box_size": [98, 98]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "dis",
+    "dis_preset": "medium",
+    "dis_mode": 2,
+    "algorithm_list": ["raft", "dis"],
+    "hhd_downsample": 3
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold":1,
+    "div_threshold":0.02,
+    "expansion_threshold": 0.01,
+    "kernel_size": [5,5],
+    "denoise_sigma": 6
+  }
+}
+
+
diff --git a/config/prototype_of3_720p.json b/config/prototype_of3_720p.json
new file mode 100644
index 0000000..185ccbf
--- /dev/null
+++ b/config/prototype_of3_720p.json
@@ -0,0 +1,44 @@
+{
+  "name": "prototype",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [1280, 720],
+    "fps": 30,
+    "units": 15,
+    "units_used": 9, 
+    "resolution_stitch": [263, 263],
+    "stitch_res_list": [365,263,123,63]
+  },
+  "stitcher": {
+    "min_area_frac": 0.01,
+    "max_area_frac": 0.04,
+    "max_aspect_ratio": 25,
+    "index": [1,2,3,6,7,8,11,12,13],
+    "margin": 10,
+    "nominal_ov_pos": 67,
+    "n": [3,3],
+    "row_tol": 0.6,
+    "box_size": [180, 180]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "dis",
+    "dis_preset": "medium",
+    "dis_mode": 2,
+    "algorithm_list": ["raft", "dis"],
+    "hhd_downsample": 3
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold":1,
+    "div_threshold":0.02,
+    "expansion_threshold": 0.01,
+    "kernel_size": [5,5],
+    "denoise_sigma": 10
+  }
+}
+
+
diff --git a/config/prototype_raft.json b/config/prototype_raft.json
new file mode 100644
index 0000000..480995b
--- /dev/null
+++ b/config/prototype_raft.json
@@ -0,0 +1,43 @@
+{
+  "name": "prototype",
+  "version": "1.0",
+  "camera": {
+    "resolution_raw": [1920, 1080],
+    "fps": 30,
+    "units": 15,
+    "units_used": 9, 
+    "resolution_stitch": [384, 384]
+  },
+  "stitcher": {
+    "min_area_frac": 0.01,
+    "max_area_frac": 0.04,
+    "max_aspect_ratio": 100,
+    "index": [1,2,3,6,7,8,11,12,13],
+    "margin": 10,
+    "nominal_ov_pos": 100,
+    "n": [3,3],
+    "row_tol": 0.6,
+    "box_size": [220, 220]
+  },
+  "tracker": {
+    "adaptive": true,
+    "lower_threshold": 12.0,
+    "upper_threshold": 18.0,
+    "loop_closure_interval": 1,
+    "algorithm": "raft",
+    "dis_preset": "medium",
+    "dis_mode": 3,
+    "algorithm_list": ["raft", "dis"],
+    "hhd_downsample": 3
+  },
+  "contact": {
+    "min_contour_area": 3000,
+    "flow_threshold":1.5,
+    "div_threshold":0.08,
+    "expansion_threshold": 0.01,
+    "kernel_size": [5,5],
+    "denoise_sigma": 15
+  }
+}
+
+
diff --git a/internal/README.md b/internal/README.md
new file mode 100644
index 0000000..9f6fa68
--- /dev/null
+++ b/internal/README.md
@@ -0,0 +1,57 @@
+# Sensor Bench Operator (Internal)
+
+Private operator / inspection workflow UI. **Do not publish** this folder or its
+resources in customer EXEs, public docs, or release zips.
+
+## What lives here
+
+- Workflow UI (`sensor_bench_operator.app.MainWindow`)
+- Inspection steps (`steps/default.json`)
+- Lab component options (`config/options.json`, including Chinese lab labels)
+- Operator locale catalogs (`config/locales/`)
+
+The public exhibition app lives under the repository root (`run.py`,
+`src/sensor_bench/exhibition_app.py`) and must not import this package.
+
+## Run (source)
+
+From the repository root:
+
+```powershell
+python internal/run_operator.py
+```
+
+Or:
+
+```bat
+.\internal\run_operator.bat
+```
+
+Requires the public `sensor-bench` package sources on `PYTHONPATH` (the launcher
+adds `src/` and `internal/src/` automatically) and an importable `orisys`.
+
+## Build private EXE
+
+Uses the same conda env as the public build (`sensor-bench-build-py310`):
+
+```bat
+.\build\create_env.bat
+.\build\build_operator_exe.bat
+```
+
+Output (internal only — do not ship to customers):
+
+```text
+dist/SensorBenchOperator/SensorBenchOperator.exe
+```
+
+The build copies public sensor configs plus operator `options.json`, locales, and
+`steps/` beside the EXE. See [`../build/README.md`](../build/README.md).
+
+## Relationship to public Sensor Bench
+
+```text
+orisys (public SDK)
+  ├── sensor-bench → dist/SensorBench/ (public exhibition EXE)
+  └── internal/    → dist/SensorBenchOperator/ (private operator EXE)
+```
diff --git a/internal/config/locales/en_US.json b/internal/config/locales/en_US.json
new file mode 100644
index 0000000..2097c0d
--- /dev/null
+++ b/internal/config/locales/en_US.json
@@ -0,0 +1,166 @@
+{
+  "app": {
+    "title": "Sensor Bench",
+    "language": "Language",
+    "lang_zh": "中文",
+    "lang_en": "English"
+  },
+  "panels": {
+    "instructions": "Instructions",
+    "options": "Sensor Component Types",
+    "camera": "Camera (Orisys SDK)",
+    "recording": "Recording",
+    "raw": "Raw Image (sensor.frame)",
+    "processed": "Processed Image (Sensor.get_img)",
+    "force": "Force Curves"
+  },
+  "labels": {
+    "sensor_type": "Sensor type",
+    "elastomer": "Elastomer",
+    "cmos": "CMOS",
+    "marker": "Marker",
+    "indentor": "Indenter",
+    "platform": "Platform",
+    "camera_index": "Camera index",
+    "backend": "Backend",
+    "fixed_mode": "Fixed mode: {mode}",
+    "fixed_mode_unset": "Fixed mode: set config path",
+    "fixed_mode_invalid": "Fixed mode: invalid config ({error})",
+    "requested": "Requested",
+    "actual": "Actual",
+    "capture_fps": "Capture FPS",
+    "render_fps": "Render FPS",
+    "proc_ms": "Proc ms",
+    "fn": "FN",
+    "fx": "FX",
+    "fy": "FY",
+    "no_preview": "No preview",
+    "processed_placeholder": "Start Preview to show Orisys output",
+    "not_recording": "Not recording",
+    "force_plot": "Force",
+    "config_dir_tip": "Installed configs dir: {path}\nSelected: {selected}",
+    "config_dir_missing": "Installed Orisys configs directory not found. Use Config… to browse a local JSON."
+  },
+  "buttons": {
+    "config": "Config…",
+    "cal": "Cal…",
+    "start_preview": "Start Preview",
+    "stop_preview": "Stop Preview",
+    "browse": "Browse…",
+    "start_record": "Start Record",
+    "stop_record": "Stop Record",
+    "next": "Next",
+    "revert": "Revert",
+    "reset": "New Sample / Reset"
+  },
+  "placeholders": {
+    "config": "Select an installed Orisys config, or browse a JSON file",
+    "cal": "Optional calibration .npy"
+  },
+  "dialogs": {
+    "select_config": "Select config JSON",
+    "select_cal": "Select calibration",
+    "select_recordings": "Select recordings folder",
+    "orisys_title": "Orisys",
+    "orisys_required": "orisys SDK is required for preview.\n\n{detail}",
+    "config_title": "Config",
+    "config_required": "Select a DDJX01 config JSON first.",
+    "config_invalid": "Config could not be loaded.",
+    "capture_title": "Capture",
+    "recording_title": "Recording",
+    "no_frame": "No frame yet."
+  },
+  "status": {
+    "ready": "Ready — Start Preview uses Orisys DDJX01 fixed format.",
+    "orisys_ok": "orisys available (version {version})",
+    "orisys_missing": "orisys not importable — add orisys-sdk/src to PYTHONPATH.",
+    "opening": "Opening Orisys ({mode})…",
+    "preview_stopped": "Preview stopped.",
+    "capture_error": "Capture error: {message}",
+    "frame_info": "{raw_w}x{raw_h} raw / {proc_w}x{proc_h} processed @ {fps:.1f} FPS",
+    "recording": "Recording… {name}\nOptions: sensor={sensor_type}, elastomer={elastomer}, cmos={cmos}, marker={marker}, indenter={indentor}, platform={platform}",
+    "recording_frames": "Recording… {name}\nFrames: {count}",
+    "saved": "Saved {count} frames → {path}",
+    "workflow_done": "All steps completed. Click New Sample / Reset for the next unit."
+  },
+  "exhibition": {
+    "title": "Sensor Bench Exhibition",
+    "btn_search": "Search",
+    "btn_camera": "Camera",
+    "btn_config": "Config",
+    "btn_start": "Start",
+    "btn_starting": "Starting…",
+    "btn_stop": "Pause",
+    "btn_reset": "Reset",
+    "btn_start_record": "Start Record",
+    "btn_stop_record": "Stop Record",
+    "show_log": "Show log panel",
+    "view": "View",
+    "view_pure_color": "Arrows on solid bg",
+    "view_captured": "Arrows on captured",
+    "view_processed": "Processed image",
+    "view_raw": "Raw image",
+    "sensor_type": "Sensor",
+    "sensor_orisys": "ORY-BOX/ORY-MINI",
+    "sensor_dd06": "ORY-X",
+    "sensor_switched": "Switched sensor type: {sensor}",
+    "placeholder_camera": "Camera index or video path",
+    "dialog_video": "Select video file",
+    "camera_found": "Found {count} camera(s): {names}",
+    "camera_none": "No usable camera found. Click Search to rescan, or use Camera to pick a video file.",
+    "plot_fn": "Normal Force FN",
+    "plot_fx": "Shear Force FX",
+    "plot_fy": "Shear Force FY",
+    "reset_done": "Tracker reset.",
+    "reset_need_start": "Start the sensor before resetting the tracker.",
+    "reset_failed": "Reset failed: {message}",
+    "force_fn_n": "Normal force (N)={value:.6f}",
+    "recording_started": "Recording started: {name}",
+    "hints": "Keys: Q quit | R reset tracker | S start record | E stop record | ESC fullscreen",
+    "menu_help": "Help",
+    "menu_about": "About",
+    "about_title": "About Sensor Bench",
+    "about_body": "Sensor Bench Exhibition\nVersion: {app_version}\nOrisys: {orisys_version}\n\nOrisys-Tech",
+    "config_dir_tip": "Installed configs dir: {path}\nSelected: {selected}",
+    "config_dir_missing": "Installed Orisys configs directory not found. Use Config… to browse a local JSON."
+  },
+  "workflow": {
+    "title": "Sensor Bench Inspection Workflow",
+    "current_marker": "Current",
+    "done_marker": "Done",
+    "steps": {
+      "power_on": {
+        "title": "Power on and connect",
+        "body": "Connect the sensor USB cable and wait until Windows recognizes the device."
+      },
+      "select_camera": {
+        "title": "Start Orisys preview",
+        "body": "Confirm camera index (usually 0) and DDJX01 config, then click Start Preview. Format is fixed by the Orisys config (1920x1080 @ 30)."
+      },
+      "set_options": {
+        "title": "Set sensor options",
+        "body": "Choose elastomer type, CMOS type, and marker type that match the physical unit under test."
+      },
+      "check_preview": {
+        "title": "Check raw and processed preview",
+        "body": "Confirm raw frame is ~1920x1080 and processed Orisys image is ~365x365. Inspect focus, lighting, and image cleanliness."
+      },
+      "record": {
+        "title": "Record raw data",
+        "body": "Choose a storage folder, start recording, exercise the sensor, then stop recording."
+      },
+      "review_curves": {
+        "title": "Review performance curves",
+        "body": "Watch capture/render FPS and force curves for drops or unstable exposure before signing off."
+      },
+      "sensitivity": {
+        "title": "Sensitivity test",
+        "body": "Choose a small indenter and apply a 2g weight, then watch for a clear force-curve change."
+      },
+      "max_load": {
+        "title": "Maximum load test",
+        "body": "Choose a flat plate indenter and apply weights from 10g to 500g to watch for curve changes. Use 10g to 500g for MINI and 2kg for BOX."
+      }
+    }
+  }
+}
diff --git a/internal/config/locales/zh_CN.json b/internal/config/locales/zh_CN.json
new file mode 100644
index 0000000..3db589c
--- /dev/null
+++ b/internal/config/locales/zh_CN.json
@@ -0,0 +1,166 @@
+{
+  "app": {
+    "title": "传感器检测台",
+    "language": "语言",
+    "lang_zh": "中文",
+    "lang_en": "English"
+  },
+  "panels": {
+    "instructions": "操作步骤",
+    "options": "传感器组件类型",
+    "camera": "相机（Orisys SDK）",
+    "recording": "录制",
+    "raw": "原始图像（sensor.frame）",
+    "processed": "处理后图像（Sensor.get_img）",
+    "force": "力曲线"
+  },
+  "labels": {
+    "sensor_type": "传感器类型",
+    "elastomer": "弹性体",
+    "cmos": "CMOS",
+    "marker": "图案",
+    "indentor": "压头",
+    "platform": "平台",
+    "camera_index": "相机索引",
+    "backend": "后端",
+    "fixed_mode": "固定模式：{mode}",
+    "fixed_mode_unset": "固定模式：请设置配置路径",
+    "fixed_mode_invalid": "固定模式：配置无效（{error}）",
+    "requested": "请求",
+    "actual": "实际",
+    "capture_fps": "采集 FPS",
+    "render_fps": "渲染 FPS",
+    "proc_ms": "处理 ms",
+    "fn": "FN",
+    "fx": "FX",
+    "fy": "FY",
+    "no_preview": "暂无预览",
+    "processed_placeholder": "点击开始预览以显示 Orisys 输出",
+    "not_recording": "未在录制",
+    "force_plot": "力",
+    "config_dir_tip": "已安装配置目录：{path}\n当前：{selected}",
+    "config_dir_missing": "未找到已安装的 Orisys 配置目录。可用“配置…”浏览本地 JSON。"
+  },
+  "buttons": {
+    "config": "配置…",
+    "cal": "标定…",
+    "start_preview": "开始预览",
+    "stop_preview": "停止预览",
+    "browse": "浏览…",
+    "start_record": "开始录制",
+    "stop_record": "停止录制",
+    "next": "下一步",
+    "revert": "上一步",
+    "reset": "新样品 / 重置"
+  },
+  "placeholders": {
+    "config": "从已安装 Orisys 配置中选择，或浏览 JSON",
+    "cal": "可选标定文件 .npy"
+  },
+  "dialogs": {
+    "select_config": "选择配置 JSON",
+    "select_cal": "选择标定文件",
+    "select_recordings": "选择录制文件夹",
+    "orisys_title": "Orisys",
+    "orisys_required": "预览需要 Orisys SDK。\n\n{detail}",
+    "config_title": "配置",
+    "config_required": "请先选择 DDJX01 配置 JSON。",
+    "config_invalid": "无法加载配置。",
+    "capture_title": "采集",
+    "recording_title": "录制",
+    "no_frame": "尚无可用帧。"
+  },
+  "status": {
+    "ready": "就绪 — 开始预览将使用 Orisys DDJX01 固定格式。",
+    "orisys_ok": "orisys 可用（版本 {version}）",
+    "orisys_missing": "无法导入 orisys — 请将 orisys-sdk/src 加入 PYTHONPATH。",
+    "opening": "正在打开 Orisys（{mode}）…",
+    "preview_stopped": "预览已停止。",
+    "capture_error": "采集错误：{message}",
+    "frame_info": "{raw_w}x{raw_h} 原始 / {proc_w}x{proc_h} 处理 @ {fps:.1f} FPS",
+    "recording": "正在录制… {name}\n选项：传感器={sensor_type}，弹性体={elastomer}，CMOS={cmos}，标记={marker}，压头={indentor}，平台={platform}",
+    "recording_frames": "正在录制… {name}\n帧数：{count}",
+    "saved": "已保存 {count} 帧 → {path}",
+    "workflow_done": "全部步骤已完成。可点击“新样品 / 重置”开始下一个样品。"
+  },
+  "exhibition": {
+    "title": "Sensor Bench 展示端",
+    "btn_search": "搜索",
+    "btn_camera": "摄像机",
+    "btn_config": "配置",
+    "btn_start": "启动",
+    "btn_starting": "启动中…",
+    "btn_stop": "暂停",
+    "btn_reset": "重置",
+    "btn_start_record": "开始录像",
+    "btn_stop_record": "结束录像",
+    "show_log": "显示日志面板",
+    "view": "画面",
+    "view_pure_color": "纯色背景箭头",
+    "view_captured": "采集图像箭头",
+    "view_processed": "处理后图像",
+    "view_raw": "原始图像",
+    "sensor_type": "传感器",
+    "sensor_orisys": "ORY-BOX/ORY-MINI",
+    "sensor_dd06": "ORY-X",
+    "sensor_switched": "已切换传感器类型：{sensor}",
+    "placeholder_camera": "摄像头编号或视频路径",
+    "dialog_video": "选择视频文件",
+    "camera_found": "已发现 {count} 路摄像机：{names}",
+    "camera_none": "未发现可用摄像机。可点击“搜索”重扫，或通过“摄像机”选择视频文件。",
+    "plot_fn": "法向力 FN",
+    "plot_fx": "切向力 FX",
+    "plot_fy": "切向力 FY",
+    "reset_done": "追踪器已重置。",
+    "reset_need_start": "请先启动传感器后再重置追踪器。",
+    "reset_failed": "重置失败：{message}",
+    "force_fn_n": "法向力(N)={value:.6f}",
+    "recording_started": "开始录像：{name}",
+    "hints": "按键：Q 退出 | R 重置追踪器 | S 开始录像 | E 结束录像 | ESC 全屏",
+    "menu_help": "帮助",
+    "menu_about": "关于",
+    "about_title": "关于 Sensor Bench",
+    "about_body": "Sensor Bench 展示端\n版本：{app_version}\nOrisys：{orisys_version}\n\nOrisys-Tech",
+    "config_dir_tip": "已安装配置目录：{path}\n当前：{selected}",
+    "config_dir_missing": "未找到已安装的 Orisys 配置目录。可用“配置…”浏览本地 JSON。"
+  },
+  "workflow": {
+    "title": "传感器检测流程",
+    "current_marker": "当前",
+    "done_marker": "已完成",
+    "steps": {
+      "power_on": {
+        "title": "开机并连接",
+        "body": "连接传感器 USB 线缆，等待 Windows 识别设备。"
+      },
+      "select_camera": {
+        "title": "启动 Orisys 预览",
+        "body": "确认相机索引（通常为 0）和 DDJX01 配置，然后点击开始预览。格式由 Orisys 配置固定（1920x1080 @ 30）。"
+      },
+      "set_options": {
+        "title": "设置传感器选项",
+        "body": "选择与当前被测实物一致的弹性体类型、CMOS 类型和标记类型。"
+      },
+      "check_preview": {
+        "title": "检查原始与处理后预览",
+        "body": "确认原始画面约为 1920x1080，处理后 Orisys 图像约为 365x365。检查对焦、光照和画面清洁度。"
+      },
+      "record": {
+        "title": "录制原始数据",
+        "body": "选择存储文件夹，开始录制，操作传感器，然后停止录制。"
+      },
+      "review_curves": {
+        "title": "查看性能曲线",
+        "body": "观察采集/渲染 FPS 与力曲线，确认无明显掉帧或曝光不稳定后再签字确认。"
+      },
+      "sensitivity": {
+        "title": "灵敏度测试",
+        "body": "选择小压头，并加载 2g 砝码，观察力曲线是否有清晰变化。"
+      },
+      "max_load": {
+        "title": "最大载荷测试",
+        "body": "选择平板压头，并加载 10g 到 500g 的砝码观察曲线变化；MINI 使用 10g 到 500g，BOX 使用 2kg。"
+      }
+    }
+  }
+}
diff --git a/config/options.json b/internal/config/options.json
similarity index 100%
rename from config/options.json
rename to internal/config/options.json
diff --git a/internal/run_operator.bat b/internal/run_operator.bat
new file mode 100644
index 0000000..c2cbce1
--- /dev/null
+++ b/internal/run_operator.bat
@@ -0,0 +1,3 @@
+@echo off
+cd /d "%~dp0.."
+python "%~dp0run_operator.py" %*
diff --git a/internal/run_operator.py b/internal/run_operator.py
new file mode 100644
index 0000000..a7a9fa7
--- /dev/null
+++ b/internal/run_operator.py
@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+"""Launch the private Sensor Bench operator workflow UI.
+
+Usage (from the repository root or this folder):
+    python internal/run_operator.py
+"""
+
+from __future__ import annotations
+
+import os
+import sys
+from pathlib import Path
+
+os.environ.setdefault("OPENCV_VIDEOIO_MSMF_ENABLE_HW_TRANSFORMS", "0")
+
+INTERNAL = Path(__file__).resolve().parent
+REPO = INTERNAL.parent
+PUBLIC_SRC = REPO / "src"
+OPERATOR_SRC = INTERNAL / "src"
+
+for path in (OPERATOR_SRC, PUBLIC_SRC):
+    if str(path) not in sys.path:
+        sys.path.insert(0, str(path))
+
+# Prefer sibling orisys-sdk checkout for Sensor-owned preview.
+ORISYS_SRC = REPO.parent / "orisys-sdk" / "src"
+if ORISYS_SRC.is_dir() and str(ORISYS_SRC) not in sys.path:
+    sys.path.insert(0, str(ORISYS_SRC))
+
+from sensor_bench_operator.__main__ import main  # noqa: E402
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
diff --git a/internal/src/sensor_bench_operator/__init__.py b/internal/src/sensor_bench_operator/__init__.py
new file mode 100644
index 0000000..48fd1cd
--- /dev/null
+++ b/internal/src/sensor_bench_operator/__init__.py
@@ -0,0 +1,5 @@
+"""Private Sensor Bench operator workflow UI (internal use only)."""
+
+from .app import MainWindow
+
+__all__ = ["MainWindow"]
diff --git a/internal/src/sensor_bench_operator/__main__.py b/internal/src/sensor_bench_operator/__main__.py
new file mode 100644
index 0000000..6c8885a
--- /dev/null
+++ b/internal/src/sensor_bench_operator/__main__.py
@@ -0,0 +1,26 @@
+"""python -m sensor_bench_operator"""
+
+from __future__ import annotations
+
+import os
+import sys
+
+os.environ.setdefault("OPENCV_VIDEOIO_MSMF_ENABLE_HW_TRANSFORMS", "0")
+
+from PyQt5.QtWidgets import QApplication
+
+from .app import MainWindow
+
+
+def main(argv: list[str] | None = None) -> int:
+    args = list(sys.argv if argv is None else argv)
+    qt_app = QApplication(args)
+    qt_app.setApplicationName("Sensor Bench Operator")
+    qt_app.setOrganizationName("Orisys-Tech")
+    window = MainWindow()
+    window.show()
+    return qt_app.exec_()
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
diff --git a/src/sensor_bench/app.py b/internal/src/sensor_bench_operator/app.py
similarity index 90%
rename from src/sensor_bench/app.py
rename to internal/src/sensor_bench_operator/app.py
index e504ea9..d4b16f3 100644
--- a/src/sensor_bench/app.py
+++ b/internal/src/sensor_bench_operator/app.py
@@ -1,4 +1,4 @@
-"""Main Sensor Bench window: SDK-owned raw/processed preview, recording, curves."""
+"""Internal operator workflow window (private; not part of public Sensor Bench)."""
 
 from __future__ import annotations
 
@@ -37,26 +37,28 @@ except Exception as exc:  # pragma: no cover
         "PyQtGraph is required. Install with: pip install pyqt5 pyqtgraph"
     ) from exc
 
-from .acquisition import (
+from sensor_bench.acquisition import (
     FixedCameraMode,
     SdkAcquisitionWorker,
     SdkPacket,
     load_fixed_mode,
     orisys_importable,
 )
-from .config_loader import SensorOptions, WorkflowSteps, load_sensor_options, load_workflow_steps
-from .i18n import DEFAULT_LOCALE, Translator
-from .paths import (
+from sensor_bench.config_loader import SensorOptions, WorkflowSteps, load_sensor_options, load_workflow_steps
+from sensor_bench.i18n import DEFAULT_LOCALE, Translator
+from sensor_bench.paths import (
+    config_display_name,
     default_ddjx01_calibration,
     default_ddjx01_config,
-    default_locales_dir,
-    default_options_path,
     default_recordings_dir,
-    default_steps_path,
+    list_orisys_configs,
+    orisys_configs_dir,
     project_root,
 )
-from .plot_history import MetricHistory
-from .recorder import RawRecorder
+from sensor_bench.plot_history import MetricHistory
+from sensor_bench.recorder import RawRecorder
+
+from .paths import default_locales_dir, default_options_path, default_steps_path
 
 
 STYLE = """
@@ -362,15 +364,15 @@ class MainWindow(QMainWindow):
         layout.addLayout(cam_row)
 
         cfg_row = QHBoxLayout()
-        self.config_edit = QLineEdit()
-        default_cfg = default_ddjx01_config()
-        self.config_edit.setText(str(default_cfg))
-        self.config_edit.editingFinished.connect(self._refresh_fixed_mode)
-        cfg_row.addWidget(self.config_edit, 1)
+        self.config_combo = QComboBox()
+        self.config_combo.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
+        self.config_combo.currentIndexChanged.connect(self._refresh_fixed_mode)
+        cfg_row.addWidget(self.config_combo, 1)
         self.btn_cfg = QPushButton()
         self.btn_cfg.clicked.connect(self._on_browse_config)
         cfg_row.addWidget(self.btn_cfg)
         layout.addLayout(cfg_row)
+        self._populate_config_combo(preferred=default_ddjx01_config())
 
         cal_row = QHBoxLayout()
         self.cal_edit = QLineEdit()
@@ -615,8 +617,9 @@ class MainWindow(QMainWindow):
         self.btn_revert.setText(self.t("buttons.revert"))
         self.btn_reset.setText(self.t("buttons.reset"))
 
-        self.config_edit.setPlaceholderText(self.t("placeholders.config"))
+        self.config_combo.setToolTip(self.t("placeholders.config"))
         self.cal_edit.setPlaceholderText(self.t("placeholders.cal"))
+        self._update_config_tooltip()
         if self._raw_pixmap is None:
             self.preview.setText(self.t("labels.no_preview"))
         if self._proc_pixmap is None:
@@ -708,17 +711,75 @@ class MainWindow(QMainWindow):
             "platform": str(self.platform_combo.currentData() or ""),
         }
 
+    def _selected_config(self) -> str:
+        data = self.config_combo.currentData()
+        if data:
+            return str(data)
+        return self.config_combo.currentText().strip()
+
+    def _set_config_selection(self, value: str) -> None:
+        value = str(value or "").strip()
+        if not value:
+            return
+        for index in range(self.config_combo.count()):
+            if str(self.config_combo.itemData(index) or "") == value:
+                self.config_combo.setCurrentIndex(index)
+                return
+        if Path(value).stem.lower() == "options" and Path(value).suffix.lower() == ".json":
+            return
+        self.config_combo.addItem(config_display_name(value), value)
+        self.config_combo.setCurrentIndex(self.config_combo.count() - 1)
+
+    def _populate_config_combo(self, *, preferred: str | None = None) -> None:
+        current = preferred or self._selected_config() or default_ddjx01_config()
+        custom_paths: list[str] = []
+        for index in range(self.config_combo.count()):
+            data = str(self.config_combo.itemData(index) or "")
+            if data and (Path(data).suffix.lower() == ".json" or "/" in data or "\\" in data):
+                if data not in custom_paths:
+                    custom_paths.append(data)
+
+        self.config_combo.blockSignals(True)
+        self.config_combo.clear()
+        for entry in list_orisys_configs():
+            self.config_combo.addItem(config_display_name(entry), entry)
+        for path in custom_paths:
+            if any(str(self.config_combo.itemData(i) or "") == path for i in range(self.config_combo.count())):
+                continue
+            if Path(path).stem.lower() == "options":
+                continue
+            self.config_combo.addItem(config_display_name(path), path)
+        if self.config_combo.count() == 0 and current:
+            self.config_combo.addItem(config_display_name(current), current)
+        self._set_config_selection(current)
+        self.config_combo.blockSignals(False)
+        self._update_config_tooltip()
+
+    def _update_config_tooltip(self) -> None:
+        cfg_dir = orisys_configs_dir()
+        selected = self._selected_config()
+        if cfg_dir is not None:
+            tip = self.t("labels.config_dir_tip", path=cfg_dir, selected=selected)
+        else:
+            tip = self.t("labels.config_dir_missing")
+        self.config_combo.setToolTip(tip)
+        self.btn_cfg.setToolTip(tip)
+
     def _refresh_orisys_status(self) -> None:
         ok, detail = orisys_importable()
         if ok:
             self.sdk_status.setText(self.t("status.orisys_ok", version=detail))
             self.btn_start.setEnabled(True)
+            self._populate_config_combo(preferred=self._selected_config() or default_ddjx01_config())
         else:
             self.sdk_status.setText(self.t("status.orisys_missing"))
             self.btn_start.setEnabled(False)
+            self._update_config_tooltip()
 
     def _refresh_fixed_mode(self) -> None:
-        text = self.config_edit.text().strip()
+        if not hasattr(self, "mode_label"):
+            return
+        text = self._selected_config()
         if not text:
             self._fixed_mode = None
             self.mode_label.setText(self.t("labels.fixed_mode_unset"))
@@ -729,14 +790,16 @@ class MainWindow(QMainWindow):
         except Exception as exc:  # noqa: BLE001
             self._fixed_mode = None
             self.mode_label.setText(self.t("labels.fixed_mode_invalid", error=exc))
+        self._update_config_tooltip()
 
     # -------------------------------------------------------------- capture
     def _on_browse_config(self) -> None:
+        start_dir = orisys_configs_dir() or project_root()
         path, _ = QFileDialog.getOpenFileName(
-            self, self.t("dialogs.select_config"), str(project_root()), "JSON (*.json);;All (*)"
+            self, self.t("dialogs.select_config"), str(start_dir), "JSON (*.json);;All (*)"
         )
         if path:
-            self.config_edit.setText(path)
+            self._set_config_selection(path)
             self._refresh_fixed_mode()
 
     def _on_browse_cal(self) -> None:
@@ -755,7 +818,7 @@ class MainWindow(QMainWindow):
                 self.t("dialogs.orisys_required", detail=detail),
             )
             return
-        config = self.config_edit.text().strip()
+        config = self._selected_config()
         if not config:
             QMessageBox.warning(
                 self, self.t("dialogs.config_title"), self.t("dialogs.config_required")
@@ -791,7 +854,7 @@ class MainWindow(QMainWindow):
         self.btn_stop.setEnabled(True)
         self.btn_rec_start.setEnabled(False)
         self.camera_index.setEnabled(False)
-        self.config_edit.setEnabled(False)
+        self.config_combo.setEnabled(False)
         self.cal_edit.setEnabled(False)
         self.backend_combo.setEnabled(False)
         self.statusBar().showMessage(self.t("status.opening", mode=mode.label()))
@@ -807,7 +870,7 @@ class MainWindow(QMainWindow):
         self.btn_rec_start.setEnabled(False)
         self.btn_rec_stop.setEnabled(False)
         self.camera_index.setEnabled(True)
-        self.config_edit.setEnabled(True)
+        self.config_combo.setEnabled(True)
         self.cal_edit.setEnabled(True)
         self.backend_combo.setEnabled(True)
         self.statusBar().showMessage(self.t("status.preview_stopped"))
@@ -839,7 +902,7 @@ class MainWindow(QMainWindow):
         self.btn_stop.setEnabled(False)
         self.btn_rec_start.setEnabled(False)
         self.camera_index.setEnabled(True)
-        self.config_edit.setEnabled(True)
+        self.config_combo.setEnabled(True)
         self.cal_edit.setEnabled(True)
         self.backend_combo.setEnabled(True)
         QMessageBox.warning(self, self.t("dialogs.capture_title"), message)
diff --git a/internal/src/sensor_bench_operator/paths.py b/internal/src/sensor_bench_operator/paths.py
new file mode 100644
index 0000000..11d912e
--- /dev/null
+++ b/internal/src/sensor_bench_operator/paths.py
@@ -0,0 +1,50 @@
+"""Resolve internal operator resource paths (steps, options, locales)."""
+
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+
+def is_frozen() -> bool:
+    return bool(getattr(sys, "frozen", False))
+
+
+def app_root() -> Path:
+    """Editable ``internal/`` directory, or frozen executable directory."""
+    if is_frozen():
+        return Path(sys.executable).resolve().parent
+    return Path(__file__).resolve().parents[2]
+
+
+def resource_root() -> Path:
+    """Bundled resource root for editable and PyInstaller runs."""
+    if is_frozen():
+        return Path(getattr(sys, "_MEIPASS", app_root())).resolve()
+    return app_root()
+
+
+def operator_root() -> Path:
+    """Compatibility alias for ``app_root()``."""
+    return app_root()
+
+
+def default_options_path() -> Path:
+    external = app_root() / "config" / "options.json"
+    if external.exists():
+        return external
+    return resource_root() / "config" / "options.json"
+
+
+def default_steps_path() -> Path:
+    external = app_root() / "steps" / "default.json"
+    if external.exists():
+        return external
+    return resource_root() / "steps" / "default.json"
+
+
+def default_locales_dir() -> Path:
+    external = app_root() / "config" / "locales"
+    if external.exists():
+        return external
+    return resource_root() / "config" / "locales"
diff --git a/steps/default.json b/internal/steps/default.json
similarity index 100%
rename from steps/default.json
rename to internal/steps/default.json
diff --git a/internal/tests/test_operator_smoke.py b/internal/tests/test_operator_smoke.py
new file mode 100644
index 0000000..c1e974b
--- /dev/null
+++ b/internal/tests/test_operator_smoke.py
@@ -0,0 +1,82 @@
+"""Smoke tests for the internal Sensor Bench operator UI."""
+
+from __future__ import annotations
+
+import os
+import sys
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(ROOT / "src"))
+sys.path.insert(0, str(ROOT / "internal" / "src"))
+
+os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")
+
+
+def test_mainwindow_offscreen() -> None:
+    from PyQt5.QtWidgets import QApplication
+    from sensor_bench.acquisition import FixedCameraMode
+    from sensor_bench.i18n import DEFAULT_LOCALE
+    from sensor_bench_operator.app import MainWindow
+
+    app = QApplication.instance() or QApplication([])
+    win = MainWindow()
+    assert win.tr.locale == DEFAULT_LOCALE == "zh_CN"
+    assert "传感器" in win.windowTitle()
+    assert win.btn_start.text() == "开始预览"
+    assert win.camera_index.value() == 0
+    assert win.config_combo is not None
+    assert win.config_combo.count() >= 1
+    assert win.btn_next is not None
+    assert win.btn_revert is not None
+    assert win.btn_reset is not None
+    assert win.sensor_type_combo.count() == 2
+    assert win.indentor_combo.count() == 2
+    assert win.platform_combo.count() == 3
+    assert win.selected_sensor_options()["sensor_type"] == "BOX"
+    assert win.selected_sensor_options()["indentor"] == "1mm_circle"
+    assert win.selected_sensor_options()["platform"] == "manual"
+    assert not hasattr(win, "resolution_combo")
+    assert not hasattr(win, "btn_search")
+    assert win._current_step_index == 0
+    assert not win.btn_revert.isEnabled()
+    assert win.btn_next.isEnabled()
+
+    # Language switch refreshes labels without restart.
+    win.language_combo.setCurrentIndex(1)
+    assert win.tr.locale == "en_US"
+    assert win.windowTitle() == "Sensor Bench"
+    assert win.btn_start.text() == "Start Preview"
+
+    # Workflow next / revert / reset.
+    total = len(win.workflow.steps)
+    win._on_step_next()
+    assert win._current_step_index == 1
+    assert win.btn_revert.isEnabled()
+    win._on_step_revert()
+    assert win._current_step_index == 0
+    for _ in range(total):
+        win._on_step_next()
+    assert win._current_step_index == total
+    assert not win.btn_next.isEnabled()
+    assert "completed" in win.workflow_status.text().lower() or "完成" in win.workflow_status.text()
+    win._on_step_reset()
+    assert win._current_step_index == 0
+    assert win.btn_next.isEnabled()
+
+    win._fixed_mode = FixedCameraMode(
+        width=1920,
+        height=1080,
+        fps=30.0,
+        config_ref=str(ROOT / "tests" / "fixtures" / "ddjx01_min.json"),
+        stitch_width=365,
+        stitch_height=365,
+    )
+    win.mode_label.setText(win.t("labels.fixed_mode", mode=win._fixed_mode.label()))
+    assert "1920x1080" in win.mode_label.text()
+    win.close()
+
+
+if __name__ == "__main__":
+    test_mainwindow_offscreen()
+    print("ok")
diff --git a/pyproject.toml b/pyproject.toml
index a722ba5..4608872 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "sensor-bench"
 version = "0.1.0"
-description = "Operator tool for connecting sensors, viewing raw data, recording, and inspecting performance"
+description = "Public exhibition desktop app for Orisys tactile sensor preview, recording, and force plots"
 readme = "README.md"
 requires-python = ">=3.10"
 authors = [{ name = "Orisys-Tech" }]
diff --git a/run.py b/run.py
index 3387069..0450240 100644
--- a/run.py
+++ b/run.py
@@ -1,15 +1,22 @@
 #!/usr/bin/env python3
-"""Launch Sensor Bench without installing the package.
+"""Launch the public Sensor Bench exhibition app without installing the package.
 
 Usage (from the repository root):
     python run.py
+
+Private operator UI:
+    python internal/run_operator.py
 """
 
 from __future__ import annotations
 
+import os
 import sys
 from pathlib import Path
 
+# Must be set before importing OpenCV / sensor_bench modules that import cv2.
+os.environ.setdefault("OPENCV_VIDEOIO_MSMF_ENABLE_HW_TRANSFORMS", "0")
+
 ROOT = Path(__file__).resolve().parent
 SRC = ROOT / "src"
 if str(SRC) not in sys.path:
diff --git a/src/sensor_bench/__init__.py b/src/sensor_bench/__init__.py
index e75c543..3a76ebb 100644
--- a/src/sensor_bench/__init__.py
+++ b/src/sensor_bench/__init__.py
@@ -1,3 +1,3 @@
-"""Sensor Bench: operator tooling for raw sensor inspection and recording."""
+"""Sensor Bench: public exhibition desktop app for Orisys tactile sensors."""
 
 __version__ = "0.1.0"
diff --git a/src/sensor_bench/acquisition.py b/src/sensor_bench/acquisition.py
index fd599c7..d0fbecc 100644
--- a/src/sensor_bench/acquisition.py
+++ b/src/sensor_bench/acquisition.py
@@ -17,6 +17,8 @@ from typing import Callable, Optional
 import cv2
 import numpy as np
 
+from .force_calibration import FORCE_SAMPLE_RATE_HZ, LOWPASS_CUTOFF_HZ
+
 
 @dataclass(frozen=True)
 class FixedCameraMode:
@@ -51,6 +53,7 @@ class SdkPacket:
     shear_y: float = 0.0
     session_id: int = 0
     mode: Optional[FixedCameraMode] = None
+    flow: Optional[np.ndarray] = None
 
 
 def orisys_importable() -> tuple[bool, str]:
@@ -104,6 +107,37 @@ def _ensure_bgr(img: np.ndarray) -> np.ndarray:
     return img
 
 
+ARROW_BG_BGR = (0x16, 0x13, 0x12)  # #121316 as BGR
+_ARROW_DRAW_KW = dict(
+    threshold=2,
+    grid_spacing=20,
+    arrow_scale=0.5,
+    below_threshold_color=(160, 160, 160),
+)
+
+
+def draw_arrow_display(
+    processed_frame: np.ndarray,
+    flow: Optional[np.ndarray],
+    *,
+    background: str = "pure_color",
+) -> np.ndarray:
+    """Build exhibition display: arrows on solid bg or over the processed frame."""
+    base = _ensure_bgr(processed_frame)
+    if flow is None:
+        return base
+    try:
+        import orisys
+
+        if background == "pure_color":
+            canvas = np.empty_like(base)
+            canvas[:, :] = ARROW_BG_BGR
+            return orisys.util.draw_arrows(canvas, flow, **_ARROW_DRAW_KW)
+        return orisys.util.draw_arrows(base, flow, **_ARROW_DRAW_KW)
+    except Exception:  # noqa: BLE001
+        return base
+
+
 class SdkAcquisitionWorker:
     """Background loop: ``Sensor.get_img()`` + deformation + contact."""
 
@@ -189,6 +223,14 @@ class SdkAcquisitionWorker:
         with self._lock:
             self._latest = None
 
+    def reset(self) -> None:
+        """Reset the live Orisys sensor tracker (baseline), if running."""
+        with self._lock:
+            sensor = self._sensor
+        if sensor is None:
+            raise RuntimeError("Sensor is not running")
+        sensor.reset()
+
     def _close_sensor(self) -> None:
         sensor = self._sensor
         self._sensor = None
@@ -220,6 +262,10 @@ class SdkAcquisitionWorker:
             if self._cal_path:
                 kwargs["cal_path"] = self._cal_path
             self._sensor = orisys.Sensor(source, **kwargs)
+            self._sensor.configure(
+                lowpass_cutoff_hz=LOWPASS_CUTOFF_HZ,
+                lowpass_sample_rate_hz=FORCE_SAMPLE_RATE_HZ,
+            )
             self._status(f"Streaming {mode.label()}")
         except Exception as exc:  # noqa: BLE001
             if self._on_error is not None and session == self._session_id:
@@ -252,14 +298,23 @@ class SdkAcquisitionWorker:
                 fps = float(len(frame_times)) if frame_times else 0.0
 
                 fn = fx = fy = 0.0
+                flow = None
                 try:
-                    fn, fx, fy = self._sensor.read_info(
+                    fn, fx, fy, flow = self._sensor.read_info(
                         self._sensor.info.FNORMAL,
                         self._sensor.info.FSHEARX,
                         self._sensor.info.FSHEARY,
+                        self._sensor.info.VRAW,
                     )
                 except Exception:  # noqa: BLE001
-                    pass
+                    try:
+                        fn, fx, fy = self._sensor.read_info(
+                            self._sensor.info.FNORMAL,
+                            self._sensor.info.FSHEARX,
+                            self._sensor.info.FSHEARY,
+                        )
+                    except Exception:  # noqa: BLE001
+                        pass
 
                 raw_bgr = _ensure_bgr(raw)
                 proc_bgr = _ensure_bgr(processed)
@@ -278,6 +333,7 @@ class SdkAcquisitionWorker:
                     shear_y=float(fy),
                     session_id=session,
                     mode=mode,
+                    flow=flow,
                 )
                 with self._lock:
                     self._latest = packet
diff --git a/src/sensor_bench/camera_discovery.py b/src/sensor_bench/camera_discovery.py
new file mode 100644
index 0000000..cd2813e
--- /dev/null
+++ b/src/sensor_bench/camera_discovery.py
@@ -0,0 +1,138 @@
+"""Discover USB cameras for Sensor Bench (Windows DSHOW/MSMF, Linux V4L2)."""
+
+from __future__ import annotations
+
+import contextlib
+import os
+import sys
+from dataclasses import dataclass
+
+import cv2
+
+DEFAULT_MAX_CAMERA_INDEX = 10
+
+
+@dataclass(frozen=True)
+class CameraInfo:
+    index: int
+    backend_name: str
+    backend_api: int
+    width: int
+    height: int
+
+    @property
+    def source(self) -> str:
+        return str(self.index)
+
+    def label(self) -> str:
+        return f"{self.index} ({self.width}x{self.height}) [{self.backend_name}]"
+
+
+@contextlib.contextmanager
+def _suppress_opencv_noise():
+    """Hide OpenCV VideoCapture probe warnings (stderr + OpenCV log)."""
+    prev_level = None
+    set_level = None
+    try:
+        logging = getattr(getattr(cv2, "utils", None), "logging", None)
+        if logging is not None:
+            set_level = getattr(logging, "setLogLevel", None)
+            get_level = getattr(logging, "getLogLevel", None)
+            silent = getattr(logging, "LOG_LEVEL_SILENT", 0)
+            if set_level is not None:
+                if get_level is not None:
+                    prev_level = get_level()
+                set_level(silent)
+    except Exception:
+        prev_level = None
+
+    devnull = open(os.devnull, "w")
+    try:
+        with contextlib.redirect_stderr(devnull):
+            stderr_fd = sys.stderr.fileno()
+            saved_fd = os.dup(stderr_fd)
+            try:
+                os.dup2(devnull.fileno(), stderr_fd)
+                yield
+            finally:
+                os.dup2(saved_fd, stderr_fd)
+                os.close(saved_fd)
+    finally:
+        devnull.close()
+        if set_level is not None and prev_level is not None:
+            try:
+                set_level(prev_level)
+            except Exception:
+                pass
+
+
+def _backend_candidates() -> list[tuple[str, int]]:
+    candidates: list[tuple[str, int]] = []
+    if sys.platform == "win32":
+        if hasattr(cv2, "CAP_DSHOW"):
+            candidates.append(("DSHOW", cv2.CAP_DSHOW))
+        if hasattr(cv2, "CAP_MSMF"):
+            candidates.append(("MSMF", cv2.CAP_MSMF))
+    elif sys.platform.startswith("linux"):
+        if hasattr(cv2, "CAP_V4L2"):
+            candidates.append(("V4L2", cv2.CAP_V4L2))
+    if not candidates:
+        candidates.append(("ANY", cv2.CAP_ANY))
+    return candidates
+
+
+def _try_open(index: int, backend_name: str, backend_api: int) -> CameraInfo | None:
+    cap = cv2.VideoCapture(index, backend_api)
+    if not cap.isOpened():
+        cap.release()
+        return None
+    ok, frame = cap.read()
+    width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH) or 0)
+    height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT) or 0)
+    if not ok or frame is None:
+        if width <= 0 or height <= 0:
+            cap.release()
+            return None
+    else:
+        h, w = frame.shape[:2]
+        width = width or int(w)
+        height = height or int(h)
+    cap.release()
+    return CameraInfo(
+        index=index,
+        backend_name=backend_name,
+        backend_api=backend_api,
+        width=width,
+        height=height,
+    )
+
+
+def list_cameras(max_index: int = DEFAULT_MAX_CAMERA_INDEX) -> list[CameraInfo]:
+    """Probe indices ``0 .. max_index`` and return working cameras."""
+    found: list[CameraInfo] = []
+    seen_indices: set[int] = set()
+    backends = _backend_candidates()
+
+    with _suppress_opencv_noise():
+        for index in range(0, max_index + 1):
+            for backend_name, backend_api in backends:
+                info = _try_open(index, backend_name, backend_api)
+                if info is None:
+                    continue
+                if index in seen_indices:
+                    break
+                found.append(info)
+                seen_indices.add(index)
+                break
+    return found
+
+
+def pick_default_camera(cameras: list[CameraInfo], preferred: str | None = None) -> str | None:
+    if not cameras:
+        return None
+    preferred = (preferred or "").strip()
+    if preferred:
+        for cam in cameras:
+            if cam.source == preferred:
+                return cam.source
+    return cameras[0].source
diff --git a/src/sensor_bench/dd06_acquisition.py b/src/sensor_bench/dd06_acquisition.py
new file mode 100644
index 0000000..560ada5
--- /dev/null
+++ b/src/sensor_bench/dd06_acquisition.py
@@ -0,0 +1,243 @@
+"""DD06 acquisition: external capture + ROI rectify + already_processed Sensor."""
+
+from __future__ import annotations
+
+import threading
+import time
+from pathlib import Path
+from typing import Callable, Optional
+
+from .acquisition import FixedCameraMode, SdkPacket, _ensure_bgr, load_fixed_mode, orisys_importable
+from .force_calibration import FORCE_SAMPLE_RATE_HZ, LOWPASS_CUTOFF_HZ
+from .roi_geometry import (
+    build_roi_warp,
+    load_json_config,
+    load_roi_polygon,
+    open_video_source,
+    rectified_output_size,
+    warp_roi_to_rectangle,
+)
+
+
+class Dd06AcquisitionWorker:
+    """Background loop for DD06 polygon-ROI rectification pipeline."""
+
+    def __init__(
+        self,
+        *,
+        on_error: Optional[Callable[[str], None]] = None,
+        on_status: Optional[Callable[[str], None]] = None,
+    ):
+        self._on_error = on_error
+        self._on_status = on_status
+        self._thread: Optional[threading.Thread] = None
+        self._stop = threading.Event()
+        self._lock = threading.Lock()
+        self._latest: Optional[SdkPacket] = None
+        self._session_id = 0
+        self._sensor = None
+        self._cap = None
+        self._mode: Optional[FixedCameraMode] = None
+        self._video_source: Optional[str | int] = None
+        self._config_ref: Optional[str] = None
+
+    @property
+    def is_running(self) -> bool:
+        return self._thread is not None and self._thread.is_alive()
+
+    @property
+    def session_id(self) -> int:
+        return self._session_id
+
+    @property
+    def mode(self) -> Optional[FixedCameraMode]:
+        return self._mode
+
+    def latest(self) -> Optional[SdkPacket]:
+        with self._lock:
+            return self._latest
+
+    def start(
+        self,
+        video_source: str | int = 0,
+        *,
+        config_path: str | Path,
+    ) -> FixedCameraMode:
+        self.stop()
+        ok, detail = orisys_importable()
+        if not ok:
+            raise RuntimeError(
+                "orisys SDK is not importable. Install orisys and ensure it is available. "
+                f"Detail: {detail}"
+            )
+        mode = load_fixed_mode(config_path)
+        self._mode = mode
+        self._video_source = video_source
+        self._config_ref = str(config_path).strip()
+        self._latest = None
+        self._session_id += 1
+        session = self._session_id
+        self._stop.clear()
+        self._thread = threading.Thread(
+            target=self._run,
+            name=f"Dd06Acquisition-{session}",
+            daemon=True,
+            args=(session,),
+        )
+        self._thread.start()
+        return self._mode
+
+    def stop(self) -> None:
+        self._stop.set()
+        thread = self._thread
+        if thread is not None and thread.is_alive():
+            thread.join(timeout=5.0)
+        self._thread = None
+        self._close()
+        with self._lock:
+            self._latest = None
+
+    def reset(self) -> None:
+        """Reset the live Orisys sensor tracker (baseline), if running."""
+        with self._lock:
+            sensor = self._sensor
+        if sensor is None:
+            raise RuntimeError("Sensor is not running")
+        sensor.reset()
+
+    def _close(self) -> None:
+        cap = self._cap
+        self._cap = None
+        if cap is not None:
+            try:
+                cap.release()
+            except Exception:  # noqa: BLE001
+                pass
+        sensor = self._sensor
+        self._sensor = None
+        if sensor is not None:
+            try:
+                sensor.disconnect()
+            except Exception:  # noqa: BLE001
+                pass
+
+    def _status(self, message: str) -> None:
+        if self._on_status is not None:
+            self._on_status(message)
+
+    def _run(self, session: int) -> None:
+        import orisys
+
+        mode = self._mode
+        source = self._video_source
+        config_ref = self._config_ref
+        if mode is None or source is None or config_ref is None:
+            return
+        try:
+            self._status(f"Opening DD06 pipeline ({mode.width}x{mode.height})…")
+            config = load_json_config(config_ref)
+            roi_points, roi_image_size = load_roi_polygon(config)
+            out_size = rectified_output_size(config, roi_points)
+            self._sensor = orisys.Sensor("external", config_name=config_ref, verbose=False)
+            self._sensor.configure(
+                lowpass_cutoff_hz=LOWPASS_CUTOFF_HZ,
+                lowpass_sample_rate_hz=FORCE_SAMPLE_RATE_HZ,
+            )
+            self._cap, resolved = open_video_source(source)
+            warp_matrix = None
+            last_frame_size = None
+            self._status(f"Streaming DD06 ROI {out_size[0]}x{out_size[1]} from {resolved}")
+        except Exception as exc:  # noqa: BLE001
+            if self._on_error is not None and session == self._session_id:
+                self._on_error(str(exc))
+            self._close()
+            return
+
+        frame_times: list[float] = []
+        while not self._stop.is_set() and session == self._session_id:
+            try:
+                t0 = time.perf_counter()
+                ok, frame = self._cap.read()
+                if not ok or frame is None:
+                    time.sleep(0.005)
+                    continue
+
+                frame_h, frame_w = frame.shape[:2]
+                frame_size = (frame_w, frame_h)
+                if warp_matrix is None or last_frame_size != frame_size:
+                    warp_matrix, _, _ = build_roi_warp(
+                        roi_points,
+                        roi_image_size,
+                        frame_size,
+                        out_size,
+                    )
+                    last_frame_size = frame_size
+
+                rectified = warp_roi_to_rectangle(frame, warp_matrix, out_size)
+                processed = self._sensor.get_img(frame=rectified, already_processed=True)
+                if processed is None:
+                    processed = rectified
+
+                try:
+                    self._sensor.compute_deformation(decompose=True, check_motion=False)
+                    self._sensor.compute_contact()
+                except Exception:  # noqa: BLE001
+                    pass
+
+                t1 = time.perf_counter()
+                frame_times.append(t1)
+                cutoff = t1 - 1.0
+                frame_times = [t for t in frame_times if t >= cutoff]
+                fps = float(len(frame_times)) if frame_times else 0.0
+
+                fn = fx = fy = 0.0
+                flow = None
+                try:
+                    fn, fx, fy, flow = self._sensor.read_info(
+                        self._sensor.info.FNORMAL,
+                        self._sensor.info.FSHEARX,
+                        self._sensor.info.FSHEARY,
+                        self._sensor.info.VRAW,
+                    )
+                except Exception:  # noqa: BLE001
+                    try:
+                        fn, fx, fy = self._sensor.read_info(
+                            self._sensor.info.FNORMAL,
+                            self._sensor.info.FSHEARX,
+                            self._sensor.info.FSHEARY,
+                        )
+                    except Exception:  # noqa: BLE001
+                        pass
+
+                raw_bgr = _ensure_bgr(frame)
+                # Prefer sensor.img / get_img result for processed visualization.
+                proc_src = getattr(self._sensor, "img", None)
+                if proc_src is None:
+                    proc_src = processed
+                proc_bgr = _ensure_bgr(proc_src)
+                packet = SdkPacket(
+                    raw_frame=raw_bgr,
+                    processed_frame=proc_bgr,
+                    timestamp=time.time(),
+                    fps=fps,
+                    process_ms=(t1 - t0) * 1000.0,
+                    width=int(raw_bgr.shape[1]),
+                    height=int(raw_bgr.shape[0]),
+                    processed_width=int(proc_bgr.shape[1]),
+                    processed_height=int(proc_bgr.shape[0]),
+                    normal_force=float(fn),
+                    shear_x=float(fx),
+                    shear_y=float(fy),
+                    session_id=session,
+                    mode=mode,
+                    flow=flow,
+                )
+                with self._lock:
+                    self._latest = packet
+            except Exception as exc:  # noqa: BLE001
+                if self._on_error is not None and session == self._session_id:
+                    self._on_error(str(exc))
+                break
+
+        self._close()
+        self._status("Acquisition stopped")
diff --git a/src/sensor_bench/exhibition_app.py b/src/sensor_bench/exhibition_app.py
new file mode 100644
index 0000000..72935ec
--- /dev/null
+++ b/src/sensor_bench/exhibition_app.py
@@ -0,0 +1,910 @@
+"""Exhibition-friendly Sensor Bench window (qt_viewer_2-style layout)."""
+
+from __future__ import annotations
+
+import time
+from importlib.metadata import PackageNotFoundError, version as pkg_version
+from pathlib import Path
+from typing import Optional, Protocol
+
+import cv2
+import numpy as np
+from PyQt5.QtCore import Qt, QObject, QTimer, pyqtSignal
+from PyQt5.QtGui import QImage, QPixmap
+from PyQt5.QtWidgets import (
+    QAction,
+    QCheckBox,
+    QComboBox,
+    QFileDialog,
+    QHBoxLayout,
+    QLabel,
+    QLineEdit,
+    QMainWindow,
+    QMessageBox,
+    QPlainTextEdit,
+    QPushButton,
+    QSizePolicy,
+    QSplitter,
+    QVBoxLayout,
+    QWidget,
+)
+
+try:
+    import pyqtgraph as pg
+except Exception as exc:  # pragma: no cover
+    raise ImportError(
+        "PyQtGraph is required. Install with: pip install pyqt5 pyqtgraph"
+    ) from exc
+
+from .acquisition import (
+    FixedCameraMode,
+    SdkAcquisitionWorker,
+    SdkPacket,
+    draw_arrow_display,
+    load_fixed_mode,
+    orisys_importable,
+)
+from .camera_discovery import list_cameras, pick_default_camera
+from .dd06_acquisition import Dd06AcquisitionWorker
+from .force_calibration import (
+    FORCE_SAMPLE_RATE_HZ,
+    PLOT_BUFFER_POINTS,
+    PLOT_WINDOW_SEC,
+    Y_AXIS_MIN_SPAN,
+    Y_RANGE_ALPHA,
+    calibrate_normal_force,
+)
+from .i18n import DEFAULT_LOCALE, Translator
+from .paths import (
+    config_display_name,
+    default_dd06_config,
+    default_ddjx01_config,
+    default_locales_dir,
+    default_recordings_dir,
+    list_orisys_configs,
+    orisys_configs_dir,
+    project_root,
+)
+from .plot_history import MetricHistory
+from .recorder import RawRecorder
+
+CURVE_COLORS = ("#8ab4f8", "#34a853", "#fbbc04")
+APP_VERSION_FALLBACK = "0.1.0"
+
+STYLE = """
+QMainWindow, QWidget {
+    background-color: #1e1f22;
+    color: #e8eaed;
+    font-family: "Segoe UI", "Microsoft YaHei", "SimHei", Arial, sans-serif;
+    font-size: 13px;
+}
+QMenuBar {
+    background-color: #1e1f22;
+    color: #e8eaed;
+}
+QMenuBar::item:selected { background-color: #2d3139; }
+QMenu {
+    background-color: #2a2d33;
+    color: #e8eaed;
+    border: 1px solid #4a505a;
+}
+QMenu::item:selected { background-color: #243447; }
+QPushButton {
+    background-color: #2d3139;
+    border: 1px solid #4a505a;
+    border-radius: 4px;
+    padding: 6px 14px;
+    min-height: 28px;
+    color: #e8eaed;
+}
+QPushButton:hover { background-color: #3a404c; }
+QPushButton:pressed { background-color: #252930; }
+QPushButton:disabled { color: #6b7280; background-color: #25262a; }
+QPushButton#btnPrimary {
+    background-color: #1a73e8;
+    border-color: #1a73e8;
+    color: white;
+    font-weight: 600;
+}
+QPushButton#btnPrimary:hover { background-color: #1967d2; }
+QPushButton#btnDanger {
+    background-color: #c5221f;
+    border-color: #c5221f;
+    color: white;
+    font-weight: 600;
+}
+QPushButton#btnDanger:hover { background-color: #a50e0e; }
+QLineEdit, QComboBox {
+    background-color: #2a2d33;
+    border: 1px solid #4a505a;
+    border-radius: 4px;
+    padding: 5px 8px;
+    color: #e8eaed;
+}
+QComboBox QAbstractItemView {
+    background-color: #2a2d33;
+    color: #e8eaed;
+    selection-background-color: #243447;
+}
+QLabel#toolbarCaption { color: #9aa0a6; }
+QLabel#imagePanel {
+    color: #6b7280;
+    background-color: #121316;
+    border: 1px solid #3c4048;
+    border-radius: 6px;
+}
+QPlainTextEdit {
+    background-color: #121316;
+    color: #9aa0a6;
+    border: 1px solid #3c4048;
+    border-radius: 6px;
+    font-family: "Cascadia Code", "Consolas", monospace;
+    font-size: 12px;
+    padding: 6px;
+}
+QSplitter::handle { background-color: #2a2d33; }
+"""
+
+
+class AcquisitionPipeline(Protocol):
+    is_running: bool
+
+    def latest(self) -> Optional[SdkPacket]: ...
+
+    def stop(self) -> None: ...
+
+    def reset(self) -> None: ...
+
+
+def ndarray_to_pixmap(frame: np.ndarray) -> QPixmap:
+    if frame.ndim == 2 or (frame.ndim == 3 and frame.shape[2] == 1):
+        gray = frame if frame.ndim == 2 else frame[:, :, 0]
+        h, w = gray.shape[:2]
+        image = QImage(gray.data, w, h, w, QImage.Format_Grayscale8)
+        return QPixmap.fromImage(image.copy())
+    if frame.ndim == 3 and frame.shape[2] == 4:
+        rgba = cv2.cvtColor(frame, cv2.COLOR_BGRA2RGBA)
+        h, w = rgba.shape[:2]
+        image = QImage(rgba.data, w, h, w * 4, QImage.Format_RGBA8888)
+        return QPixmap.fromImage(image.copy())
+    rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
+    h, w = rgb.shape[:2]
+    image = QImage(rgb.data, w, h, w * 3, QImage.Format_RGB888)
+    return QPixmap.fromImage(image.copy())
+
+
+def app_version() -> str:
+    try:
+        return pkg_version("sensor-bench")
+    except PackageNotFoundError:
+        return APP_VERSION_FALLBACK
+
+
+class _AcquisitionBridge(QObject):
+    error = pyqtSignal(str)
+    status = pyqtSignal(str)
+
+
+class ExhibitionWindow(QMainWindow):
+    """External exhibition UI: toolbar + image + FN/FX/FY plots + log."""
+
+    def __init__(self, *, locales_dir: Optional[Path] = None, locale: str = DEFAULT_LOCALE):
+        super().__init__()
+        self.resize(1480, 900)
+        self.setStyleSheet(STYLE)
+
+        self.tr = Translator(locales_dir or default_locales_dir(), locale=locale)
+        self.recordings_dir = default_recordings_dir()
+        self.force_history = MetricHistory(
+            npoints=PLOT_BUFFER_POINTS,
+            channels=3,
+            window_sec=PLOT_WINDOW_SEC,
+            sample_rate_hz=FORCE_SAMPLE_RATE_HZ,
+            y_axis_min_span=Y_AXIS_MIN_SPAN,
+            y_range_alpha=Y_RANGE_ALPHA,
+        )
+
+        self._acq_bridge = _AcquisitionBridge()
+        self._acq_bridge.error.connect(self._on_acquisition_error)
+        self._acq_bridge.status.connect(self._on_acquisition_status)
+        self.stitch_worker = SdkAcquisitionWorker(
+            on_error=lambda m: self._acq_bridge.error.emit(m),
+            on_status=lambda m: self._acq_bridge.status.emit(m),
+        )
+        self.dd06_worker = Dd06AcquisitionWorker(
+            on_error=lambda m: self._acq_bridge.error.emit(m),
+            on_status=lambda m: self._acq_bridge.status.emit(m),
+        )
+        self.acquisition: AcquisitionPipeline = self.stitch_worker
+        self.recorder = RawRecorder()
+
+        self._source_pixmap: Optional[QPixmap] = None
+        self._last_packet: Optional[SdkPacket] = None
+        self._last_packet_id = 0
+        self._awaiting_first_frame = False
+        self._display_aspect = 1.0
+        self._view_mode = "pure_color"
+        self._sensor_type = "orisys"
+        self._log_panel_visible = False
+        self._fixed_mode: Optional[FixedCameraMode] = None
+        self._orisys_config = str(default_ddjx01_config())
+        self._dd06_config = str(default_dd06_config())
+
+        self._build_ui()
+        self._create_plots()
+        self._apply_language()
+        self._refresh_orisys_status()
+        self._log(self.t("exhibition.hints"))
+
+        self.timer = QTimer(self)
+        self.timer.timeout.connect(self._on_tick)
+        self.timer.start(16)
+
+    def t(self, key: str, **kwargs) -> str:
+        return self.tr.t(key, **kwargs)
+
+    def _log(self, message: str) -> None:
+        stamp = time.strftime("%H:%M:%S")
+        self.log_widget.appendPlainText(f"[{stamp}] {message}")
+
+    def _pipeline_running(self) -> bool:
+        return bool(self.stitch_worker.is_running or self.dd06_worker.is_running)
+
+    def _build_ui(self) -> None:
+        self._build_menu()
+
+        central = QWidget()
+        self.setCentralWidget(central)
+        root = QVBoxLayout(central)
+        root.setContentsMargins(8, 8, 8, 8)
+        root.setSpacing(8)
+
+        bar = QHBoxLayout()
+        bar.setSpacing(8)
+
+        self.sensor_caption = QLabel()
+        self.sensor_caption.setObjectName("toolbarCaption")
+        bar.addWidget(self.sensor_caption)
+        self.sensor_combo = QComboBox()
+        self.sensor_combo.addItem("", "orisys")
+        self.sensor_combo.addItem("", "dd06")
+        self.sensor_combo.currentIndexChanged.connect(self._on_sensor_type_changed)
+        bar.addWidget(self.sensor_combo)
+
+        self.btn_search = QPushButton()
+        self.btn_search.clicked.connect(self._on_search_cameras)
+        bar.addWidget(self.btn_search)
+        self.btn_camera = QPushButton()
+        self.btn_camera.clicked.connect(self._on_browse_camera)
+        bar.addWidget(self.btn_camera)
+        self.camera_edit = QLineEdit("0")
+        bar.addWidget(self.camera_edit, 1)
+
+        self.btn_config = QPushButton()
+        self.btn_config.clicked.connect(self._on_browse_config)
+        bar.addWidget(self.btn_config)
+        self.config_combo = QComboBox()
+        self.config_combo.setMinimumWidth(160)
+        self.config_combo.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
+        bar.addWidget(self.config_combo, 1)
+        self._populate_config_combo(preferred=self._orisys_config)
+
+        self.btn_start = QPushButton()
+        self.btn_start.setObjectName("btnPrimary")
+        self.btn_start.clicked.connect(self._on_start)
+        bar.addWidget(self.btn_start)
+
+        self.btn_stop = QPushButton()
+        self.btn_stop.setEnabled(False)
+        self.btn_stop.clicked.connect(self._on_stop)
+        bar.addWidget(self.btn_stop)
+
+        self.btn_reset = QPushButton()
+        self.btn_reset.setEnabled(False)
+        self.btn_reset.clicked.connect(self._on_reset)
+        bar.addWidget(self.btn_reset)
+
+        self.btn_record = QPushButton()
+        self.btn_record.setObjectName("btnDanger")
+        self.btn_record.setEnabled(False)
+        self.btn_record.clicked.connect(self._on_toggle_record)
+        bar.addWidget(self.btn_record)
+
+        self.show_log_check = QCheckBox()
+        self.show_log_check.setChecked(False)
+        self.show_log_check.toggled.connect(self._on_show_log_changed)
+        bar.addWidget(self.show_log_check)
+
+        self.view_caption = QLabel()
+        self.view_caption.setObjectName("toolbarCaption")
+        bar.addWidget(self.view_caption)
+        self.view_combo = QComboBox()
+        self.view_combo.addItem("", "pure_color")
+        self.view_combo.addItem("", "captured")
+        self.view_combo.addItem("", "raw")
+        self.view_combo.setCurrentIndex(0)
+        self.view_combo.currentIndexChanged.connect(self._on_view_changed)
+        bar.addWidget(self.view_combo)
+
+        self.language_caption = QLabel()
+        self.language_caption.setObjectName("toolbarCaption")
+        bar.addWidget(self.language_caption)
+        self.language_combo = QComboBox()
+        self.language_combo.addItem("", "zh_CN")
+        self.language_combo.addItem("", "en_US")
+        self.language_combo.setCurrentIndex(0 if self.tr.locale == "zh_CN" else 1)
+        self.language_combo.currentIndexChanged.connect(self._on_language_changed)
+        bar.addWidget(self.language_combo)
+
+        root.addLayout(bar)
+
+        v_splitter = QSplitter(Qt.Vertical)
+        h_splitter = QSplitter(Qt.Horizontal)
+
+        left = QWidget()
+        left_layout = QVBoxLayout(left)
+        left_layout.setContentsMargins(0, 0, 0, 0)
+        self.image_label = QLabel()
+        self.image_label.setObjectName("imagePanel")
+        self.image_label.setMinimumSize(240, 240)
+        self.image_label.setAlignment(Qt.AlignCenter)
+        self.image_label.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
+        left_layout.addWidget(self.image_label)
+        h_splitter.addWidget(left)
+
+        pg.setConfigOptions(antialias=True, foreground="#e8eaed", background="#121316")
+        self.graph_widget = pg.GraphicsLayoutWidget()
+        self.graph_widget.setMinimumWidth(320)
+        h_splitter.addWidget(self.graph_widget)
+        self.h_splitter = h_splitter
+        v_splitter.addWidget(h_splitter)
+
+        self.log_widget = QPlainTextEdit()
+        self.log_widget.setReadOnly(True)
+        self.log_widget.setMaximumBlockCount(500)
+        self.log_widget.setMinimumHeight(110)
+        self.log_widget.setVisible(self._log_panel_visible)
+        v_splitter.addWidget(self.log_widget)
+        v_splitter.setStretchFactor(0, 5)
+        v_splitter.setStretchFactor(1, 1)
+        root.addWidget(v_splitter, 1)
+
+        self.status_label = QLabel()
+        self.status_label.setStyleSheet("color: #9aa0a6;")
+        root.addWidget(self.status_label)
+
+    def _build_menu(self) -> None:
+        menu = self.menuBar()
+        self.help_menu = menu.addMenu("")
+        self.about_action = QAction("", self)
+        self.about_action.triggered.connect(self._on_about)
+        self.help_menu.addAction(self.about_action)
+
+    def _create_plots(self) -> None:
+        self.plots = []
+        self.curves = []
+        self.dot_cores = []
+        self.plot_titles = [
+            "exhibition.plot_fn",
+            "exhibition.plot_fx",
+            "exhibition.plot_fy",
+        ]
+        axis_pen = pg.mkPen(color="#3c4048", width=1)
+        for i, title_key in enumerate(self.plot_titles):
+            plot = self.graph_widget.addPlot(title=self.t(title_key))
+            plot.showGrid(x=False, y=True, alpha=0.2)
+            plot.getAxis("left").setPen(axis_pen)
+            plot.getAxis("bottom").setPen(axis_pen)
+            plot.setLabel("bottom", "s")
+            curve = plot.plot(pen=pg.mkPen(CURVE_COLORS[i], width=2))
+            dot = plot.plot(
+                [],
+                [],
+                pen=None,
+                symbol="o",
+                symbolSize=6,
+                symbolBrush=CURVE_COLORS[i],
+            )
+            plot.setXRange(0, PLOT_WINDOW_SEC, padding=0)
+            plot.enableAutoRange(x=False, y=False)
+            self.plots.append(plot)
+            self.curves.append(curve)
+            self.dot_cores.append(dot)
+            if i < 2:
+                self.graph_widget.nextRow()
+
+    def _apply_language(self) -> None:
+        self.setWindowTitle(self.t("exhibition.title"))
+        self.help_menu.setTitle(self.t("exhibition.menu_help"))
+        self.about_action.setText(self.t("exhibition.menu_about"))
+        self.sensor_caption.setText(self.t("exhibition.sensor_type"))
+        self.btn_search.setText(self.t("exhibition.btn_search"))
+        self.btn_camera.setText(self.t("exhibition.btn_camera"))
+        self.btn_config.setText(self.t("exhibition.btn_config"))
+        self.btn_start.setText(self.t("exhibition.btn_start"))
+        self.btn_stop.setText(self.t("exhibition.btn_stop"))
+        self.btn_reset.setText(self.t("exhibition.btn_reset"))
+        self._refresh_record_button()
+        self.view_caption.setText(self.t("exhibition.view"))
+        self.show_log_check.setText(self.t("exhibition.show_log"))
+        self.language_caption.setText(self.t("app.language"))
+        self.camera_edit.setPlaceholderText(self.t("exhibition.placeholder_camera"))
+        self._update_config_tooltip()
+
+        self.language_combo.blockSignals(True)
+        self.language_combo.setItemText(0, self.t("app.lang_zh"))
+        self.language_combo.setItemText(1, self.t("app.lang_en"))
+        self.language_combo.blockSignals(False)
+
+        self.sensor_combo.blockSignals(True)
+        self.sensor_combo.setItemText(0, self.t("exhibition.sensor_orisys"))
+        self.sensor_combo.setItemText(1, self.t("exhibition.sensor_dd06"))
+        self.sensor_combo.blockSignals(False)
+
+        self.view_combo.blockSignals(True)
+        self.view_combo.setItemText(0, self.t("exhibition.view_pure_color"))
+        self.view_combo.setItemText(1, self.t("exhibition.view_captured"))
+        self.view_combo.setItemText(2, self.t("exhibition.view_raw"))
+        self.view_combo.blockSignals(False)
+
+        for plot, title_key in zip(self.plots, self.plot_titles):
+            plot.setTitle(self.t(title_key), color="#9aa0a6", size="12pt")
+
+        if self._source_pixmap is None:
+            self.image_label.setText(self.t("labels.no_preview"))
+        self.status_label.setText(self.t("status.ready"))
+
+    def _selected_config(self) -> str:
+        data = self.config_combo.currentData()
+        if data:
+            return str(data)
+        return self.config_combo.currentText().strip()
+
+    def _set_config_selection(self, value: str) -> None:
+        value = str(value or "").strip()
+        if not value:
+            return
+        for index in range(self.config_combo.count()):
+            if str(self.config_combo.itemData(index) or "") == value:
+                self.config_combo.setCurrentIndex(index)
+                return
+        # Custom path not yet in the list.
+        if Path(value).stem.lower() == "options" and Path(value).suffix.lower() == ".json":
+            return
+        self.config_combo.addItem(config_display_name(value), value)
+        self.config_combo.setCurrentIndex(self.config_combo.count() - 1)
+
+    def _populate_config_combo(self, *, preferred: str | None = None) -> None:
+        current = preferred or self._selected_config() or default_ddjx01_config()
+        custom_paths = []
+        for index in range(self.config_combo.count()):
+            data = str(self.config_combo.itemData(index) or "")
+            if data and (Path(data).suffix.lower() == ".json" or "/" in data or "\\" in data):
+                if data not in custom_paths:
+                    custom_paths.append(data)
+
+        self.config_combo.blockSignals(True)
+        self.config_combo.clear()
+        for entry in list_orisys_configs():
+            self.config_combo.addItem(config_display_name(entry), entry)
+        for path in custom_paths:
+            # Avoid duplicating local entries already listed above.
+            if any(str(self.config_combo.itemData(i) or "") == path for i in range(self.config_combo.count())):
+                continue
+            if Path(path).stem.lower() == "options":
+                continue
+            self.config_combo.addItem(config_display_name(path), path)
+        if self.config_combo.count() == 0 and current:
+            self.config_combo.addItem(config_display_name(current), current)
+        self.config_combo.blockSignals(False)
+        self._set_config_selection(current)
+        self._update_config_tooltip()
+
+    def _update_config_tooltip(self) -> None:
+        cfg_dir = orisys_configs_dir()
+        selected = self._selected_config()
+        if cfg_dir is not None:
+            tip = self.t("exhibition.config_dir_tip", path=cfg_dir, selected=selected)
+        else:
+            tip = self.t("exhibition.config_dir_missing")
+        self.config_combo.setToolTip(tip)
+        self.btn_config.setToolTip(tip)
+
+    def _refresh_record_button(self) -> None:
+        if self.recorder.is_recording:
+            self.btn_record.setText(self.t("exhibition.btn_stop_record"))
+        else:
+            self.btn_record.setText(self.t("exhibition.btn_start_record"))
+
+    def _on_about(self) -> None:
+        ok, orisys_ver = orisys_importable()
+        orisys_text = orisys_ver if ok else self.t("status.orisys_missing")
+        QMessageBox.about(
+            self,
+            self.t("exhibition.about_title"),
+            self.t(
+                "exhibition.about_body",
+                app_version=app_version(),
+                orisys_version=orisys_text,
+            ),
+        )
+
+    def _on_language_changed(self, *_args) -> None:
+        locale = self.language_combo.currentData()
+        if not locale:
+            return
+        self.tr.set_locale(str(locale))
+        self._apply_language()
+        self._refresh_orisys_status()
+
+    def _on_sensor_type_changed(self, *_args) -> None:
+        if self._pipeline_running():
+            return
+        kind = str(self.sensor_combo.currentData() or "orisys")
+        if kind == self._sensor_type:
+            return
+        # Remember current config for the leaving type.
+        if self._sensor_type == "orisys":
+            self._orisys_config = self._selected_config() or self._orisys_config
+        else:
+            self._dd06_config = self._selected_config() or self._dd06_config
+        self._sensor_type = kind
+        self.acquisition = self.dd06_worker if kind == "dd06" else self.stitch_worker
+        preferred = self._dd06_config if kind == "dd06" else self._orisys_config
+        self._populate_config_combo(preferred=preferred)
+        self._log(self.t("exhibition.sensor_switched", sensor=kind))
+
+    def _on_view_changed(self, *_args) -> None:
+        mode = self.view_combo.currentData()
+        if mode in ("pure_color", "captured", "raw"):
+            self._view_mode = str(mode)
+        if self._last_packet is not None:
+            self._update_image(self._last_packet)
+
+    def _on_show_log_changed(self, visible: bool) -> None:
+        self._log_panel_visible = bool(visible)
+        self.log_widget.setVisible(self._log_panel_visible)
+
+    def _refresh_orisys_status(self) -> None:
+        ok, detail = orisys_importable()
+        if ok:
+            self.status_label.setText(self.t("status.orisys_ok", version=detail))
+            self.btn_start.setEnabled(not self._pipeline_running())
+            self._populate_config_combo(preferred=self._selected_config() or default_ddjx01_config())
+        else:
+            self.status_label.setText(self.t("status.orisys_missing"))
+            self.btn_start.setEnabled(False)
+            self._update_config_tooltip()
+
+    def _parse_camera_source(self) -> str | int:
+        text = self.camera_edit.text().strip() or "0"
+        if text.isdigit():
+            return int(text)
+        return text
+
+    def _on_search_cameras(self) -> None:
+        if self._pipeline_running():
+            return
+        preferred = self.camera_edit.text().strip()
+        cameras = list_cameras()
+        if not cameras:
+            self._log(self.t("exhibition.camera_none"))
+            return
+        names = ", ".join(cam.label() for cam in cameras)
+        self._log(self.t("exhibition.camera_found", count=len(cameras), names=names))
+        selected = pick_default_camera(
+            cameras, preferred if preferred.isdigit() else None
+        )
+        if selected is not None:
+            self.camera_edit.setText(selected)
+
+    def _on_browse_camera(self) -> None:
+        path, _ = QFileDialog.getOpenFileName(
+            self,
+            self.t("exhibition.dialog_video"),
+            str(project_root()),
+            "Video (*.mp4 *.avi *.mov);;All (*)",
+        )
+        if path:
+            self.camera_edit.setText(path)
+
+    def _on_browse_config(self) -> None:
+        start_dir = orisys_configs_dir() or project_root()
+        path, _ = QFileDialog.getOpenFileName(
+            self,
+            self.t("dialogs.select_config"),
+            str(start_dir),
+            "JSON (*.json);;All (*)",
+        )
+        if path:
+            self._set_config_selection(path)
+            self._update_config_tooltip()
+
+    def _on_start(self) -> None:
+        ok, detail = orisys_importable()
+        if not ok:
+            QMessageBox.warning(
+                self,
+                self.t("dialogs.orisys_title"),
+                self.t("dialogs.orisys_required", detail=detail),
+            )
+            return
+        config = self._selected_config()
+        if not config:
+            QMessageBox.warning(
+                self, self.t("dialogs.config_title"), self.t("dialogs.config_required")
+            )
+            return
+        try:
+            mode = load_fixed_mode(config)
+        except Exception as exc:  # noqa: BLE001
+            QMessageBox.warning(
+                self,
+                self.t("dialogs.config_title"),
+                self.t("labels.fixed_mode_invalid", error=exc),
+            )
+            return
+
+        self.force_history.reset()
+        self._awaiting_first_frame = True
+        self._source_pixmap = None
+        self.image_label.clear()
+        self.image_label.setText(self.t("labels.no_preview"))
+        self.btn_start.setEnabled(False)
+        self.btn_start.setText(self.t("exhibition.btn_starting"))
+        self.sensor_combo.setEnabled(False)
+
+        try:
+            if self._sensor_type == "dd06":
+                self.acquisition = self.dd06_worker
+                mode = self.dd06_worker.start(
+                    self._parse_camera_source(),
+                    config_path=config,
+                )
+            else:
+                self.acquisition = self.stitch_worker
+                mode = self.stitch_worker.start(
+                    self._parse_camera_source(),
+                    config_path=config,
+                    cal_path=None,
+                    backend="auto",
+                )
+        except Exception as exc:  # noqa: BLE001
+            self._awaiting_first_frame = False
+            self.btn_start.setEnabled(True)
+            self.btn_start.setText(self.t("exhibition.btn_start"))
+            self.sensor_combo.setEnabled(True)
+            QMessageBox.critical(self, self.t("dialogs.capture_title"), str(exc))
+            self._log(self.t("status.capture_error", message=exc))
+            return
+
+        self._fixed_mode = mode
+        self.btn_start.setText(self.t("exhibition.btn_start"))
+        self.btn_stop.setEnabled(True)
+        self.btn_reset.setEnabled(True)
+        self.btn_record.setEnabled(False)
+        self.btn_search.setEnabled(False)
+        self.btn_camera.setEnabled(False)
+        self.camera_edit.setEnabled(False)
+        self.config_combo.setEnabled(False)
+        self.status_label.setText(self.t("status.opening", mode=mode.label()))
+        self._log(self.t("status.opening", mode=mode.label()))
+
+    def _on_stop(self) -> None:
+        if self.recorder.is_recording:
+            self._stop_record()
+        self.stitch_worker.stop()
+        self.dd06_worker.stop()
+        self._awaiting_first_frame = False
+        self._last_packet = None
+        self._source_pixmap = None
+        self.image_label.clear()
+        self.image_label.setText(self.t("labels.no_preview"))
+        self.btn_start.setEnabled(orisys_importable()[0])
+        self.btn_stop.setEnabled(False)
+        self.btn_reset.setEnabled(False)
+        self.btn_record.setEnabled(False)
+        self.btn_search.setEnabled(True)
+        self.btn_camera.setEnabled(True)
+        self.camera_edit.setEnabled(True)
+        self.config_combo.setEnabled(True)
+        self.sensor_combo.setEnabled(True)
+        self.status_label.setText(self.t("status.preview_stopped"))
+        self._log(self.t("status.preview_stopped"))
+
+    def _on_reset(self) -> None:
+        if not self._pipeline_running():
+            self._log(self.t("exhibition.reset_need_start"))
+            return
+        try:
+            self.acquisition.reset()
+        except Exception as exc:  # noqa: BLE001
+            self._log(self.t("exhibition.reset_failed", message=exc))
+            return
+        self._log(self.t("exhibition.reset_done"))
+
+    def _on_toggle_record(self) -> None:
+        if self.recorder.is_recording:
+            self._stop_record()
+        else:
+            self._start_record()
+
+    def _start_record(self) -> None:
+        packet = self._last_packet or self.acquisition.latest()
+        if packet is None:
+            QMessageBox.warning(
+                self, self.t("dialogs.recording_title"), self.t("dialogs.no_frame")
+            )
+            return
+        record_fps = packet.fps or (packet.mode.fps if packet.mode else 30.0)
+        try:
+            path = self.recorder.start(
+                self.recordings_dir, fps=float(record_fps), frame=packet.raw_frame
+            )
+        except Exception as exc:  # noqa: BLE001
+            QMessageBox.critical(self, self.t("dialogs.recording_title"), str(exc))
+            return
+        self._refresh_record_button()
+        self._log(self.t("exhibition.recording_started", name=path.name))
+
+    def _stop_record(self) -> None:
+        path, count = self.recorder.stop()
+        self._refresh_record_button()
+        if path is None:
+            return
+        self._log(self.t("status.saved", count=count, path=path))
+
+    def _on_acquisition_error(self, message: str) -> None:
+        self._awaiting_first_frame = False
+        self.btn_start.setEnabled(orisys_importable()[0])
+        self.btn_stop.setEnabled(False)
+        self.btn_reset.setEnabled(False)
+        self.btn_record.setEnabled(False)
+        self.btn_search.setEnabled(True)
+        self.btn_camera.setEnabled(True)
+        self.camera_edit.setEnabled(True)
+        self.config_combo.setEnabled(True)
+        self.sensor_combo.setEnabled(True)
+        self.status_label.setText(self.t("status.capture_error", message=message))
+        self._log(self.t("status.capture_error", message=message))
+        QMessageBox.warning(self, self.t("dialogs.capture_title"), message)
+
+    def _on_acquisition_status(self, message: str) -> None:
+        self.status_label.setText(message)
+        self._log(message)
+
+    def _on_tick(self) -> None:
+        packet = self.acquisition.latest()
+        if packet is None:
+            return
+        packet_id = id(packet)
+        if packet_id == self._last_packet_id and not self._awaiting_first_frame:
+            return
+
+        if self._awaiting_first_frame:
+            self._awaiting_first_frame = False
+            self.btn_record.setEnabled(True)
+            info = self.t(
+                "status.frame_info",
+                raw_w=packet.width,
+                raw_h=packet.height,
+                proc_w=packet.processed_width,
+                proc_h=packet.processed_height,
+                fps=packet.fps,
+            )
+            self.status_label.setText(info)
+            self._log(info)
+            self._log(
+                self.t(
+                    "exhibition.force_fn_n",
+                    value=calibrate_normal_force(packet.normal_force),
+                )
+            )
+
+        self._last_packet = packet
+        self._last_packet_id = packet_id
+        self._update_image(packet)
+        self.force_history.push(
+            packet.timestamp,
+            packet.normal_force,
+            packet.shear_x,
+            packet.shear_y,
+        )
+        self._update_plots()
+
+        if self.recorder.is_recording:
+            self.recorder.write(packet.raw_frame)
+            self.status_label.setText(
+                self.t(
+                    "status.recording_frames",
+                    name=self.recorder.path.name if self.recorder.path else "",
+                    count=self.recorder.frame_count,
+                )
+            )
+
+    def _update_image(self, packet: SdkPacket) -> None:
+        if self._view_mode == "raw":
+            frame = packet.raw_frame
+        elif self._view_mode == "captured":
+            frame = draw_arrow_display(
+                packet.processed_frame, packet.flow, background="captured"
+            )
+        else:
+            frame = draw_arrow_display(
+                packet.processed_frame, packet.flow, background="pure_color"
+            )
+        h, w = frame.shape[:2]
+        aspect = float(w) / float(h) if h else 1.0
+        first = self._source_pixmap is None
+        aspect_changed = abs(aspect - self._display_aspect) > 1e-3
+        self._display_aspect = aspect
+        self._source_pixmap = ndarray_to_pixmap(frame)
+        if first or aspect_changed:
+            self._adjust_image_panel()
+        else:
+            self._render_image()
+
+    def _adjust_image_panel(self) -> None:
+        available = max(self.height() - 220, 200)
+        image_w = int(available * self._display_aspect)
+        image_w = max(min(image_w, max(self.width() // 2, 240)), 240)
+        self.h_splitter.setSizes([image_w, max(self.width() - image_w, 320)])
+        self._render_image()
+
+    def _render_image(self) -> None:
+        if self._source_pixmap is None or self._source_pixmap.isNull():
+            return
+        target = self.image_label.size()
+        if target.width() < 2 or target.height() < 2:
+            return
+        scaled = self._source_pixmap.scaled(
+            target, Qt.KeepAspectRatio, Qt.SmoothTransformation
+        )
+        self.image_label.setPixmap(scaled)
+
+    def _update_plots(self) -> None:
+        state = self.force_history.state()
+        if state is None:
+            return
+        for i, curve in enumerate(self.curves):
+            x = state.times
+            y = state.values[:, i]
+            curve.setData(x, y)
+            ymin, ymax = state.y_ranges[i]
+            self.plots[i].setYRange(ymin, ymax)
+            self.dot_cores[i].setData(x[-1:], y[-1:])
+        x0, x1 = state.x_range
+        for plot in self.plots:
+            plot.setXRange(x0, x1, padding=0)
+
+    def resizeEvent(self, event) -> None:  # noqa: N802
+        super().resizeEvent(event)
+        self._render_image()
+
+    def keyPressEvent(self, event) -> None:  # noqa: N802
+        key = event.key()
+        if key == Qt.Key_Escape:
+            if self.isFullScreen():
+                self.showNormal()
+            else:
+                self.showFullScreen()
+        elif key == Qt.Key_Q:
+            self.close()
+        elif key == Qt.Key_S:
+            if not self.recorder.is_recording and self._pipeline_running():
+                self._start_record()
+        elif key == Qt.Key_E:
+            if self.recorder.is_recording:
+                self._stop_record()
+        elif key == Qt.Key_R:
+            self._on_reset()
+        else:
+            super().keyPressEvent(event)
+
+    def closeEvent(self, event) -> None:  # noqa: N802
+        if self.recorder.is_recording:
+            self.recorder.stop()
+        self.stitch_worker.stop()
+        self.dd06_worker.stop()
+        self.timer.stop()
+        super().closeEvent(event)
diff --git a/src/sensor_bench/force_calibration.py b/src/sensor_bench/force_calibration.py
new file mode 100644
index 0000000..a4c1068
--- /dev/null
+++ b/src/sensor_bench/force_calibration.py
@@ -0,0 +1,20 @@
+"""Force calibration coefficients and plot defaults from Orisys viewer2d."""
+
+from __future__ import annotations
+
+# Linear FN → Newtons (y = mx + c), from orisys examples/gui/sensors/adapter.py.
+NORMAL_FORCE_CAL_SLOPE = 3.92685554668795e-05
+NORMAL_FORCE_CAL_OFFSET = 0.0217596967278535
+
+# PyQtGraph force-curve tuning from examples/gui/viewer2d/backend.py.
+FORCE_SAMPLE_RATE_HZ = 30.0
+PLOT_BUFFER_POINTS = 120
+PLOT_WINDOW_SEC = PLOT_BUFFER_POINTS / FORCE_SAMPLE_RATE_HZ
+Y_AXIS_MIN_SPAN = 20000.0
+Y_RANGE_ALPHA = 0.5
+LOWPASS_CUTOFF_HZ = 10.0
+
+
+def calibrate_normal_force(raw_value: float) -> float:
+    """Convert raw normal-force reading to Newtons using y = mx + c."""
+    return NORMAL_FORCE_CAL_SLOPE * float(raw_value) + NORMAL_FORCE_CAL_OFFSET
diff --git a/src/sensor_bench/main.py b/src/sensor_bench/main.py
index afe7b66..42dfa36 100644
--- a/src/sensor_bench/main.py
+++ b/src/sensor_bench/main.py
@@ -1,22 +1,30 @@
-"""Entry point for the Sensor Bench desktop application."""
+"""Entry point for the public Sensor Bench exhibition application."""
 
 from __future__ import annotations
 
+import os
 import sys
 
+# Must run before any module that imports cv2 (exhibition_app, acquisition, etc.).
+os.environ.setdefault("OPENCV_VIDEOIO_MSMF_ENABLE_HW_TRANSFORMS", "0")
+
 from PyQt5.QtWidgets import QApplication
 
-from .app import MainWindow
-
 
 def main(argv: list[str] | None = None) -> int:
-    args = list(sys.argv if argv is None else argv)
-    qt_app = QApplication(args)
+    parser_args = list(sys.argv[1:] if argv is None else argv[1:])
+    # Accept unknown Qt args (e.g. -platform offscreen) without advertising
+    # internal-only flags on the public CLI.
+    qt_args = parser_args
+
+    qt_app = QApplication([sys.argv[0], *qt_args] if argv is None else [argv[0], *qt_args])
     qt_app.setApplicationName("Sensor Bench")
     qt_app.setOrganizationName("Orisys-Tech")
 
-    window = MainWindow()
-    window.show()
+    from .exhibition_app import ExhibitionWindow
+
+    window = ExhibitionWindow()
+    window.showMaximized()
     return qt_app.exec_()
 
 
diff --git a/src/sensor_bench/paths.py b/src/sensor_bench/paths.py
index cab40f3..680e0d7 100644
--- a/src/sensor_bench/paths.py
+++ b/src/sensor_bench/paths.py
@@ -6,6 +6,9 @@ import sys
 from pathlib import Path
 
 
+NON_SENSOR_CONFIG_STEMS = {"options", "bench_theme"}
+
+
 def is_frozen() -> bool:
     return bool(getattr(sys, "frozen", False))
 
@@ -29,20 +32,6 @@ def project_root() -> Path:
     return app_root()
 
 
-def default_options_path() -> Path:
-    external = app_root() / "config" / "options.json"
-    if external.exists():
-        return external
-    return resource_root() / "config" / "options.json"
-
-
-def default_steps_path() -> Path:
-    external = app_root() / "steps" / "default.json"
-    if external.exists():
-        return external
-    return resource_root() / "steps" / "default.json"
-
-
 def default_locales_dir() -> Path:
     external = app_root() / "config" / "locales"
     if external.exists():
@@ -64,17 +53,128 @@ def default_orisys_sdk_root() -> Path:
     return Path(r"D:\repo\orisys-sdk")
 
 
-def default_ddjx01_config() -> str:
-    if is_frozen():
-        return "ddjx01"
-    path = default_orisys_sdk_root() / "config" / "ddjx01.json"
-    if path.exists():
-        return str(path)
+def local_sensor_configs_dir() -> Path:
+    """Editable sensor configs next to the app (or repo) root."""
+    return app_root() / "config"
+
+
+def _is_sensor_config_json(path: Path) -> bool:
+    if path.suffix.lower() != ".json":
+        return False
+    if path.parent.name.lower() == "locales":
+        return False
+    if path.stem.lower() in NON_SENSOR_CONFIG_STEMS:
+        return False
+    return True
+
+
+def list_local_sensor_config_files() -> list[Path]:
+    """Return local editable sensor config JSON paths (excludes options/locales)."""
+    root = local_sensor_configs_dir()
+    if not root.exists():
+        return []
+    return sorted(p for p in root.glob("*.json") if _is_sensor_config_json(p))
+
+
+def orisys_configs_dir() -> Path | None:
+    """Prefer local sensor configs dir when present; else installed package dir."""
+    local = local_sensor_configs_dir()
+    if list_local_sensor_config_files():
+        return local
+    try:
+        import orisys
+
+        path = Path(orisys.configs.CONFIG_DIR)
+        return path if path.exists() else None
+    except Exception:  # noqa: BLE001
+        return None
+
+
+def list_orisys_configs() -> list[str]:
+    """Return selectable sensor configs.
+
+    Local ``config/*.json`` files (excluding non-sensor stems such as
+    ``bench_theme``) are listed first as
+    absolute paths so Start uses the editable copy beside the EXE. Package stems
+    from the installed Orisys wheel are appended when not already covered.
+    """
+    entries: list[str] = []
+    seen_stems: set[str] = set()
+
+    for path in list_local_sensor_config_files():
+        stem = path.stem.lower()
+        if stem in seen_stems:
+            continue
+        entries.append(str(path.resolve()))
+        seen_stems.add(stem)
+
+    try:
+        import orisys
+
+        for stem in orisys.configs.list_config():
+            key = str(stem).strip()
+            if not key:
+                continue
+            if key.lower() in NON_SENSOR_CONFIG_STEMS:
+                continue
+            if key.lower() in seen_stems:
+                continue
+            entries.append(key)
+            seen_stems.add(key.lower())
+    except Exception:  # noqa: BLE001
+        pass
+
+    return entries
+
+
+def config_display_name(value: str) -> str:
+    """Short label for a config path or package stem."""
+    text = str(value or "").strip()
+    if not text:
+        return ""
+    path = Path(text)
+    if path.suffix.lower() == ".json" or "/" in text or "\\" in text:
+        return path.stem
+    return text
+
+
+def default_config_name(sensor_type: str = "orisys") -> str:
+    """Preferred package config name for a sensor pipeline."""
+    kind = str(sensor_type or "orisys").strip().lower()
+    if kind in ("dd06", "dd06-ov", "roi", "polygon_roi"):
+        return "dd06-ov"
     return "ddjx01"
 
 
+def _pick_default_config(preferred_stem: str) -> str:
+    entries = list_orisys_configs()
+    for entry in entries:
+        if config_display_name(entry).lower() == preferred_stem.lower():
+            return entry
+    if entries:
+        return entries[0]
+    return preferred_stem
+
+
+def default_ddjx01_config() -> str:
+    """Prefer local editable config path, else package stem."""
+    return _pick_default_config(default_config_name("orisys"))
+
+
 def default_ddjx01_calibration() -> Path:
     external = app_root() / "config" / "ddjx01.npy"
     if external.exists():
         return external
     return default_orisys_sdk_root() / "config" / "ddjx01.npy"
+
+
+def default_dd06_config() -> str:
+    preferred = default_config_name("dd06")
+    entries = list_orisys_configs()
+    for stem in (preferred, "dd06"):
+        for entry in entries:
+            if config_display_name(entry).lower() == stem.lower():
+                return entry
+    if entries:
+        return preferred
+    return preferred
diff --git a/src/sensor_bench/plot_history.py b/src/sensor_bench/plot_history.py
index c8e19d9..f399238 100644
--- a/src/sensor_bench/plot_history.py
+++ b/src/sensor_bench/plot_history.py
@@ -16,19 +16,70 @@ class PlotState:
     y_ranges: tuple[tuple[float, float], ...]
 
 
-class MetricHistory:
-    """Ring-style buffer for FPS / brightness (or other scalar metrics)."""
+def lowpass_filter(
+    data,
+    cutoff_hz: float,
+    sample_rate_hz: float,
+    order: int = 2,
+) -> np.ndarray:
+    """Zero-phase Butterworth low-pass for uniformly sampled 1-D data."""
+    y = np.asarray(data, dtype=np.float64)
+    if cutoff_hz == 0:
+        return y.copy()
+    if y.size == 0:
+        return y
 
-    def __init__(self, npoints: int = 120, *, channels: int = 2, window_sec: float = 4.0):
+    nyquist = 0.5 * sample_rate_hz
+    if cutoff_hz < 0 or cutoff_hz >= nyquist:
+        raise ValueError(
+            f"cutoff_hz must be in (0, {nyquist}) for sample_rate_hz={sample_rate_hz}"
+        )
+
+    from scipy.signal import butter, filtfilt
+
+    b, a = butter(order, cutoff_hz / nyquist, btype="low")
+    padlen = 3 * (max(len(b), len(a)) - 1)
+    if y.size <= padlen:
+        return y.copy()
+    return filtfilt(b, a, y)
+
+
+class MetricHistory:
+    """Ring-style buffer for force / metric curves (viewer2d-compatible options)."""
+
+    def __init__(
+        self,
+        npoints: int = 120,
+        *,
+        channels: int = 2,
+        window_sec: float = 4.0,
+        sample_rate_hz: float | None = None,
+        lowpass_cutoff_hz: float = 0.0,
+        y_axis_min_span: float | None = None,
+        y_range_alpha: float = 0.5,
+    ):
         self.npoints = int(npoints)
         self.channels = int(channels)
         self.window_sec = float(window_sec)
+        self.sample_rate_hz = (
+            float(sample_rate_hz)
+            if sample_rate_hz is not None
+            else (self.npoints / self.window_sec if self.window_sec > 0 else 30.0)
+        )
+        self.lowpass_cutoff_hz = float(lowpass_cutoff_hz)
+        self.y_axis_min_span = (
+            None if y_axis_min_span is None else float(y_axis_min_span)
+        )
+        self.y_range_alpha = float(y_range_alpha)
         self.reset()
 
     def reset(self) -> None:
         self._data = np.full((self.npoints, 1 + self.channels), np.nan, dtype=np.float64)
         self.sample_count = 0
         self._t0: Optional[float] = None
+        self._y_range_smooth: list[Optional[tuple[float, float]]] = [
+            None for _ in range(self.channels)
+        ]
 
     def push(self, timestamp: float, *values: float) -> None:
         if len(values) != self.channels:
@@ -44,6 +95,37 @@ class MetricHistory:
         self._data[:-1, :] = self._data[1:, :]
         self._data[-1, :] = row
 
+    def _smooth_y_range(self, channel: int, ymin: float, ymax: float) -> tuple[float, float]:
+        if self.y_axis_min_span is None:
+            if abs(ymax - ymin) < 1e-6:
+                pad = 1.0 if abs(ymin) < 1e-6 else abs(ymin) * 0.1
+                ymin -= pad
+                ymax += pad
+            else:
+                pad = (ymax - ymin) * 0.12
+                ymin -= pad
+                ymax += pad
+            return ymin, ymax
+
+        if self._y_range_smooth[channel] is None:
+            smoothed = (ymin, ymax)
+        else:
+            prev_min, prev_max = self._y_range_smooth[channel]
+            alpha = self.y_range_alpha
+            ymin = alpha * ymin + (1.0 - alpha) * prev_min
+            ymax = alpha * ymax + (1.0 - alpha) * prev_max
+            smoothed = (ymin, ymax)
+
+        span = smoothed[1] - smoothed[0]
+        if span < self.y_axis_min_span:
+            mid = 0.5 * (smoothed[0] + smoothed[1])
+            half = self.y_axis_min_span / 2.0
+            smoothed = (mid - half, mid + half)
+
+        self._y_range_smooth[channel] = smoothed
+        pad = max((smoothed[1] - smoothed[0]) * 0.12, 0.01)
+        return smoothed[0] - pad, smoothed[1] + pad
+
     def state(self) -> Optional[PlotState]:
         n = self.sample_count
         if n == 0:
@@ -51,6 +133,14 @@ class MetricHistory:
         block = self._data[:n]
         times = block[:, 0].copy()
         values = block[:, 1:].copy()
+        if self.lowpass_cutoff_hz > 0:
+            for i in range(self.channels):
+                values[:, i] = lowpass_filter(
+                    values[:, i],
+                    self.lowpass_cutoff_hz,
+                    sample_rate_hz=self.sample_rate_hz,
+                )
+
         if n < self.npoints:
             x_range = (0.0, self.window_sec)
         else:
@@ -67,15 +157,7 @@ class MetricHistory:
             ymax = float(np.nanmax(col))
             if not np.isfinite(ymin) or not np.isfinite(ymax):
                 ymin, ymax = 0.0, 1.0
-            if abs(ymax - ymin) < 1e-6:
-                pad = 1.0 if abs(ymin) < 1e-6 else abs(ymin) * 0.1
-                ymin -= pad
-                ymax += pad
-            else:
-                pad = (ymax - ymin) * 0.12
-                ymin -= pad
-                ymax += pad
-            y_ranges.append((ymin, ymax))
+            y_ranges.append(self._smooth_y_range(i, ymin, ymax))
 
         return PlotState(
             times=times,
diff --git a/src/sensor_bench/roi_geometry.py b/src/sensor_bench/roi_geometry.py
new file mode 100644
index 0000000..5ba2352
--- /dev/null
+++ b/src/sensor_bench/roi_geometry.py
@@ -0,0 +1,144 @@
+"""Polygon ROI geometry helpers for DD06-style rectification."""
+
+from __future__ import annotations
+
+import json
+from pathlib import Path
+from typing import Any
+
+import cv2
+import numpy as np
+
+
+def load_json_config(path: str | Path) -> dict[str, Any]:
+    path = Path(path)
+    if path.exists():
+        with path.open("r", encoding="utf-8") as f:
+            return json.load(f)
+    try:
+        import orisys
+
+        return orisys.configs.load_config(str(path))
+    except Exception as exc:  # noqa: BLE001
+        raise FileNotFoundError(f"Config not found as file or bundled name: {path}") from exc
+
+
+def load_roi_polygon(config: dict[str, Any]):
+    """Return (points Nx2 float32, image_size [w,h]) from nested or legacy ROI fields."""
+    roi = config.get("roi") if isinstance(config.get("roi"), dict) else config
+    if not isinstance(roi, dict):
+        raise ValueError("Config has no usable ROI section")
+
+    image_size = roi.get("image_size") or config.get("camera", {}).get("resolution_raw")
+    if image_size is None:
+        raise ValueError("ROI image_size is missing")
+
+    points = roi.get("points") or roi.get("polygon") or roi.get("roi_polygon")
+    if points is None and roi.get("xyxy") is not None:
+        x1, y1, x2, y2 = [int(v) for v in roi["xyxy"]]
+        points = [[x1, y1], [x2, y1], [x2, y2], [x1, y2]]
+    if not points:
+        raise ValueError("ROI points are missing")
+
+    pts = np.asarray(points, dtype=np.float32).reshape(-1, 2)
+    if pts.shape[0] < 4:
+        raise ValueError(f"ROI needs at least 4 points, got {pts.shape[0]}")
+    return pts, [int(image_size[0]), int(image_size[1])]
+
+
+def scale_points(points, source_size, target_size):
+    source_w, source_h = float(source_size[0]), float(source_size[1])
+    target_w, target_h = float(target_size[0]), float(target_size[1])
+    pts = np.asarray(points, dtype=np.float32).reshape(-1, 2).copy()
+    if source_w > 0 and source_h > 0 and (source_w, source_h) != (target_w, target_h):
+        pts[:, 0] *= target_w / source_w
+        pts[:, 1] *= target_h / source_h
+    return pts
+
+
+def order_quad_points(points):
+    """Order 4 points as TL, TR, BR, BL for perspective transforms."""
+    pts = np.asarray(points, dtype=np.float32).reshape(-1, 2)
+    if pts.shape[0] != 4:
+        hull = cv2.convexHull(pts.astype(np.float32))
+        rect = cv2.minAreaRect(hull)
+        pts = cv2.boxPoints(rect).astype(np.float32)
+
+    s = pts.sum(axis=1)
+    diff = np.diff(pts, axis=1).reshape(-1)
+    ordered = np.zeros((4, 2), dtype=np.float32)
+    ordered[0] = pts[np.argmin(s)]
+    ordered[2] = pts[np.argmax(s)]
+    ordered[1] = pts[np.argmin(diff)]
+    ordered[3] = pts[np.argmax(diff)]
+    return ordered
+
+
+def rectified_output_size(config, points=None):
+    """Prefer camera.resolution_stitch; fall back to ROI bounding box size."""
+    stitch = config.get("camera", {}).get("resolution_stitch")
+    if stitch is not None and len(stitch) >= 2:
+        return int(stitch[0]), int(stitch[1])
+    if points is not None:
+        pts = np.asarray(points, dtype=np.float32).reshape(-1, 2)
+        width = max(
+            int(np.linalg.norm(pts[1] - pts[0])),
+            int(np.linalg.norm(pts[2] - pts[3])),
+            1,
+        )
+        height = max(
+            int(np.linalg.norm(pts[3] - pts[0])),
+            int(np.linalg.norm(pts[2] - pts[1])),
+            1,
+        )
+        return width, height
+    raise ValueError("Cannot determine rectified output size")
+
+
+def build_roi_warp(points, source_image_size, frame_size, output_size):
+    frame_w, frame_h = int(frame_size[0]), int(frame_size[1])
+    scaled = scale_points(points, source_image_size, (frame_w, frame_h))
+    src = order_quad_points(scaled)
+    out_w, out_h = int(output_size[0]), int(output_size[1])
+    dst = np.array(
+        [
+            [0.0, 0.0],
+            [out_w - 1.0, 0.0],
+            [out_w - 1.0, out_h - 1.0],
+            [0.0, out_h - 1.0],
+        ],
+        dtype=np.float32,
+    )
+    matrix = cv2.getPerspectiveTransform(src, dst)
+    return matrix, src, (out_w, out_h)
+
+
+def warp_roi_to_rectangle(frame, matrix, output_size):
+    out_w, out_h = int(output_size[0]), int(output_size[1])
+    return cv2.warpPerspective(
+        frame,
+        matrix,
+        (out_w, out_h),
+        flags=cv2.INTER_LINEAR,
+        borderMode=cv2.BORDER_REPLICATE,
+    )
+
+
+def open_video_source(video):
+    """Open a camera index or video file. Returns (cap, resolved_source)."""
+    text = str(video).strip()
+    if text.isdigit():
+        source = int(text)
+        cap = cv2.VideoCapture(source, cv2.CAP_DSHOW)
+        if not cap.isOpened():
+            cap.release()
+            cap = cv2.VideoCapture(source)
+    else:
+        path = Path(text)
+        if not path.exists():
+            raise FileNotFoundError(f"Video not found: {path}")
+        source = str(path)
+        cap = cv2.VideoCapture(source)
+    if not cap.isOpened():
+        raise RuntimeError(f"Failed to open video source: {video}")
+    return cap, source
diff --git a/tests/test_smoke.py b/tests/test_smoke.py
index 9340eed..7bbadc5 100644
--- a/tests/test_smoke.py
+++ b/tests/test_smoke.py
@@ -35,10 +35,13 @@ def test_translator_chinese_default() -> None:
     assert DEFAULT_LOCALE == "zh_CN"
     tr = Translator(default_locales_dir())
     assert tr.locale == "zh_CN"
-    assert "传感器" in tr.t("app.title")
+    assert "传感器" in tr.t("app.title") or "展示" in tr.t("exhibition.title")
     tr.set_locale("en_US")
     assert tr.t("app.title") == "Sensor Bench"
-    assert "Power on" in tr.step_title("power_on")
+    assert "Exhibition" in tr.t("exhibition.title")
+    # Public locales must not ship internal inspection workflow copy.
+    assert "workflow" not in (tr._catalogs.get("en_US") or {})
+    assert tr._lookup("en_US", "workflow.title") is None
 
 
 def test_sdk_worker_packet_mapping() -> None:
@@ -65,6 +68,9 @@ def test_sdk_worker_packet_mapping() -> None:
         def read_info(self, *args):
             return 1.0, 2.0, 3.0
 
+        def configure(self, **kwargs):
+            return self
+
         def disconnect(self):
             pass
 
@@ -102,65 +108,127 @@ def test_sdk_worker_packet_mapping() -> None:
     assert packet.processed_frame.shape[:2] == (365, 365)
 
 
-def test_mainwindow_offscreen() -> None:
+def test_force_calibration_and_plot_min_span() -> None:
+    from sensor_bench.force_calibration import (
+        NORMAL_FORCE_CAL_OFFSET,
+        Y_AXIS_MIN_SPAN,
+        calibrate_normal_force,
+    )
+    from sensor_bench.plot_history import MetricHistory
+
+    assert abs(calibrate_normal_force(0.0) - NORMAL_FORCE_CAL_OFFSET) < 1e-12
+    hist = MetricHistory(
+        npoints=8,
+        channels=3,
+        window_sec=1.0,
+        sample_rate_hz=30.0,
+        lowpass_cutoff_hz=0.0,
+        y_axis_min_span=Y_AXIS_MIN_SPAN,
+        y_range_alpha=0.5,
+    )
+    for i in range(5):
+        hist.push(float(i) / 30.0, 100.0, 100.0, 100.0)
+    state = hist.state()
+    assert state is not None
+    for ymin, ymax in state.y_ranges:
+        assert (ymax - ymin) >= Y_AXIS_MIN_SPAN * 0.99
+
+
+def test_list_orisys_configs_excludes_options() -> None:
+    from sensor_bench.paths import (
+        config_display_name,
+        list_local_sensor_config_files,
+        list_orisys_configs,
+        local_sensor_configs_dir,
+    )
+
+    entries = list_orisys_configs()
+    labels = [config_display_name(e).lower() for e in entries]
+    assert "options" not in labels
+    assert all(Path(e).stem.lower() != "options" for e in entries if Path(e).suffix.lower() == ".json")
+
+    local_ddjx = local_sensor_configs_dir() / "ddjx01.json"
+    if local_ddjx.exists():
+        local_files = list_local_sensor_config_files()
+        assert any(p.name == "ddjx01.json" for p in local_files)
+        assert any(config_display_name(e).lower() == "ddjx01" for e in entries)
+
+
+def test_roi_geometry_helpers() -> None:
+    from sensor_bench.roi_geometry import build_roi_warp, order_quad_points, warp_roi_to_rectangle
+    import numpy as np
+
+    points = np.array([[10, 10], [100, 12], [98, 90], [12, 88]], dtype=np.float32)
+    ordered = order_quad_points(points)
+    assert ordered.shape == (4, 2)
+    matrix, src, size = build_roi_warp(points, (120, 100), (120, 100), (64, 64))
+    assert size == (64, 64)
+    assert src.shape == (4, 2)
+    frame = np.zeros((100, 120, 3), dtype=np.uint8)
+    out = warp_roi_to_rectangle(frame, matrix, size)
+    assert out.shape == (64, 64, 3)
+
+
+def test_exhibition_window_offscreen() -> None:
     from PyQt5.QtWidgets import QApplication
-    from sensor_bench.app import MainWindow
-    from sensor_bench.acquisition import FixedCameraMode
+    from sensor_bench.exhibition_app import ExhibitionWindow
     from sensor_bench.i18n import DEFAULT_LOCALE
 
     app = QApplication.instance() or QApplication([])
-    win = MainWindow()
+    win = ExhibitionWindow()
     assert win.tr.locale == DEFAULT_LOCALE == "zh_CN"
-    assert "传感器" in win.windowTitle()
-    assert win.btn_start.text() == "开始预览"
-    assert win.camera_index.value() == 0
-    assert win.btn_next is not None
-    assert win.btn_revert is not None
+    assert "展示" in win.windowTitle() or "Sensor Bench" in win.windowTitle()
+    assert win.btn_start is not None
+    assert win.btn_stop is not None
     assert win.btn_reset is not None
-    assert win.sensor_type_combo.count() == 2
-    assert win.indentor_combo.count() == 2
-    assert win.platform_combo.count() == 3
-    assert win.selected_sensor_options()["sensor_type"] == "BOX"
-    assert win.selected_sensor_options()["indentor"] == "1mm_circle"
-    assert win.selected_sensor_options()["platform"] == "manual"
-    assert not hasattr(win, "resolution_combo")
-    assert not hasattr(win, "btn_search")
-    assert win._current_step_index == 0
-    assert not win.btn_revert.isEnabled()
-    assert win.btn_next.isEnabled()
+    assert win.btn_record is not None
+    assert win.btn_search is not None
+    assert win.btn_camera is not None
+    assert not hasattr(win, "btn_cal")
+    assert not hasattr(win, "cal_edit")
+    assert win.btn_reset.text() == "重置"
+    assert win.image_label is not None
+    assert win.log_widget is not None
+    assert not win.show_log_check.isChecked()
+    assert win.log_widget.isHidden()
+    assert win.show_log_check.text() == "显示日志面板"
+    win.show_log_check.setChecked(True)
+    assert win._log_panel_visible
+    assert not win.log_widget.isHidden()
+    win.show_log_check.setChecked(False)
+    assert win.log_widget.isHidden()
+    assert not win._log_panel_visible
+    assert len(win.plots) == 3
+    assert len(win.curves) == 3
+    assert win.btn_start.text() == "启动"
+    assert not win.btn_stop.isEnabled()
+    assert win._view_mode == "pure_color"
+    assert win.view_combo.currentData() == "pure_color"
+    assert win.about_action is not None
+    assert win.help_menu is not None
+    assert win.sensor_combo.count() == 2
+    assert win.config_combo is not None
+    assert win.config_combo.count() >= 1
+    from sensor_bench.paths import list_orisys_configs
+
+    installed = list_orisys_configs()
+    if "ddjx01" in installed:
+        assert win.config_combo.currentData() == "ddjx01" or win._selected_config() == "ddjx01"
 
-    # Language switch refreshes labels without restart.
     win.language_combo.setCurrentIndex(1)
     assert win.tr.locale == "en_US"
-    assert win.windowTitle() == "Sensor Bench"
-    assert win.btn_start.text() == "Start Preview"
+    assert "Exhibition" in win.windowTitle()
+    assert win.btn_start.text() == "Start"
+    assert win.btn_reset.text() == "Reset"
+    assert win.show_log_check.text() == "Show log panel"
+    assert "About" in win.about_action.text()
 
-    # Workflow next / revert / reset.
-    total = len(win.workflow.steps)
-    win._on_step_next()
-    assert win._current_step_index == 1
-    assert win.btn_revert.isEnabled()
-    win._on_step_revert()
-    assert win._current_step_index == 0
-    for _ in range(total):
-        win._on_step_next()
-    assert win._current_step_index == total
-    assert not win.btn_next.isEnabled()
-    assert "completed" in win.workflow_status.text().lower() or "完成" in win.workflow_status.text()
-    win._on_step_reset()
-    assert win._current_step_index == 0
-    assert win.btn_next.isEnabled()
-
-    win._fixed_mode = FixedCameraMode(
-        width=1920,
-        height=1080,
-        fps=30.0,
-        config_ref=str(ROOT / "tests" / "fixtures" / "ddjx01_min.json"),
-        stitch_width=365,
-        stitch_height=365,
-    )
-    win.mode_label.setText(win.t("labels.fixed_mode", mode=win._fixed_mode.label()))
-    assert "1920x1080" in win.mode_label.text()
+    win.view_combo.setCurrentIndex(1)
+    assert win._view_mode == "captured"
+    win.sensor_combo.setCurrentIndex(1)
+    assert win._sensor_type == "dd06"
+    selected = str(win._selected_config()).lower()
+    assert "dd06" in selected or selected.endswith(".json")
     win.close()
 
 
@@ -168,5 +236,8 @@ if __name__ == "__main__":
     test_load_fixed_mode()
     test_translator_chinese_default()
     test_sdk_worker_packet_mapping()
-    test_mainwindow_offscreen()
+    test_force_calibration_and_plot_min_span()
+    test_list_orisys_configs_excludes_options()
+    test_roi_geometry_helpers()
+    test_exhibition_window_offscreen()
     print("ok")