接入 Autocal Finger 视频预览

复用 shared FingerAcquisitionWorker 显示处理后画面，并保存视频与配置路径。通过针对性测试和真实视频验证。

apps/autocal/config/locales/zh_CN.json

@@ -232,6 +232,26 @@
     "reserved_surface": "多点标定的灵敏度将在此以色图叠加在传感器三维表面上：每个标定点的灵敏度经插值着色，并给出色标与范围。",
     "reserved_points": "标定点列表与采集控制将在此显示：平台坐标、参考载荷、采样统计与灵敏度结果。"
   },
+  "source": {
+    "video": "Finger 视频",
+    "config": "传感器配置",
+    "browse": "选择…",
+    "start": "开始播放",
+    "stop": "停止",
+    "idle": "请选择视频和 sensor.json",
+    "no_frame": "等待处理后的画面",
+    "choose_video": "选择 Finger 视频",
+    "choose_config": "选择 sensor.json",
+    "video_filter": "视频文件 (*.mp4 *.avi *.mov *.mkv);;所有文件 (*)",
+    "missing_input": "请选择存在的视频文件和 sensor.json",
+    "opening": "正在打开视频…",
+    "running": "正在处理视频",
+    "stopping": "正在停止…",
+    "stopped": "已停止",
+    "finished": "视频播放完毕",
+    "error": "视频处理失败：{detail}",
+    "frame": "帧 {frame} · 采集时间 {time:.3f}"
+  },
   "finger": {
     "title": "手指标定点调试",
     "bundle_path": "导出包",