subject: fix calibration cancel, unit mixing, FN clamping, export/apply and depth scale

apps/studio/config/locales/zh_CN.json

@@ -89,6 +89,9 @@
     "view_mode_tip": "运行时的图像显示模式",
     "arrow_empty": "尚未采集图像\n请选择视频或摄像机后点击「运行」",
     "arrow_empty_tip": "运行或预览后在此显示形变箭头图",
+    "depth_unavailable": "本帧没有深度数据\n（不是深度为零，也未回退显示普通形变图）",
+    "depth_scale": "深度色标 {low} – {high}",
+    "depth_scale_tip": "本会话固定色标：色标范围锁定在首个有效深度帧，便于跨帧比较；灰色区域表示无深度数据",
     "plots": "力曲线图",
     "cal": "标定",
     "mesh3d": "三维网格",
@@ -123,12 +126,18 @@
     "col_std": "σ",
     "col_actions": "",
     "recording": "正在采集标定样本…",
+    "recording_stop_tip": "点击可取消本次标定采集（随时可用）",
     "record_ok": "已记录 weight={weight} raw={raw}",
     "record_failed_few": "采集失败 — 样本过少",
     "export_ok": "已导出 {path}",
     "export_local": "同时写入 {path}",
     "export_warnings": "跳过: {detail}",
-    "export_failed": "导出失败: {error}"
+    "export_failed": "导出失败: {error}",
+    "apply_title": "应用标定",
+    "apply_confirm": "将刚导出的标定应用到当前设备？\n\n设备类型: {sensor_type}\n配置: {config}\n\n选择「否」只保留导出文件，不改动运行中的设备。",
+    "apply_skipped": "已导出，未应用到设备",
+    "apply_done": "标定已应用到 {sensor_type}",
+    "apply_no_target": "没有可应用的设备（请先运行一次采集）"
   },
   "status": {
     "ready": "就绪",
@@ -147,6 +156,8 @@
     "run_stopped": "已停止",
     "run_stopping": "正在停止…（正在释放设备）",
     "run_stopping_cancelled": "已取消连接（正在释放设备）",
+    "sample_invalid": "采样无效（第 {count} 次）：{reason} — 该样本已标记无效，未计入曲线与标定",
+    "samples_dropped": "记录缓冲已达上限，最早的 {count} 个样本已被释放（全程记录不再完整）",
     "run_failed": "启动失败: {error}",
     "video_ended": "视频已结束",
     "camera_disconnected": "摄像机已断开",