明确 Autocal 录制按钮及中止结果

区分连续录制和到档标记，并验证中止重试的目录数量。相关测试与代码检查通过。

apps/autocal/config/locales/en_US.json

@@ -271,17 +271,22 @@
     "uv": "U / V (px)",
     "position": "Mesh position",
     "levels": "Load levels (N)",
-    "hold": "Suggested hold",
-    "reference": "Actual reference (N)",
-    "start": "Start trial recording",
-    "confirm": "Confirm current level",
-    "finish": "Finish and save",
-    "abort": "Abort and keep data",
+    "hold": "Planned hold",
+    "hold_tip": "The planned hold time is saved; levels and recording do not advance automatically.",
+    "reference": "Manual reference force (N)",
+    "start": "Record this site",
+    "start_tip": "Create one trial folder for this site and continuously record images and sensor output. This does not move the platform. One load-unload cycle uses this folder.",
+    "confirm": "Mark load reached",
+    "confirm_tip": "After reaching the target and entering the manual reference force, mark this level's start and begin its hold timer. Images are already recording.",
+    "finish": "Stop and complete",
+    "finish_tip": "After all levels are marked, stop recording, flush the files, and check this trial.",
+    "abort": "Abort this recording",
+    "abort_tip": "Stop recording, keep this folder, and mark it incomplete. Starting again creates a new folder; it does not resume this one.",
     "load": "Load",
     "unload": "Unload",
     "next_step": "Next: {branch} to {load:g} N",
-    "before_start": "Start trial recording first",
-    "ready_to_finish": "All levels confirmed; finish and save",
+    "before_start": "Select a site and start the input, then begin recording",
+    "ready_to_finish": "All levels marked; recording can be stopped",
     "no_step": "No step pending",
     "progress": "Progress {done}/{total} · {status}",
     "held": " · Current level held {seconds:.1f} s",
@@ -293,6 +298,7 @@
     "complete": "Complete",
     "incomplete": "Incomplete",
     "result": "{status}: {path}",
+    "incomplete_result": "This recording is incomplete; data written so far is at: {path}",
     "error": "Action failed: {detail}",
     "invalid_site": "Select a valid UV site first",
     "start_input": "Start camera or video input first",

apps/autocal/config/locales/zh_CN.json

@@ -271,28 +271,34 @@
     "uv": "U / V (px)",
     "position": "网格坐标",
     "levels": "加载档位 (N)",
-    "hold": "建议保持",
-    "reference": "实际参考力 (N)",
-    "start": "开始试验并录制",
-    "confirm": "确认当前档位",
-    "finish": "完成并保存",
-    "abort": "中止并保留",
+    "hold": "计划保持",
+    "hold_tip": "仅保存计划保持时间；不会自动切换档位或结束录制。",
+    "reference": "人工参考力 (N)",
+    "start": "开始本测点录制",
+    "start_tip": "为当前测点新建试验目录，持续录制图像与传感器输出；不会移动平台。一次加载—卸载循环共用此目录。",
+    "confirm": "标记到档时刻",
+    "confirm_tip": "达到目标载荷并填写人工参考力后点击；记录本档起点并开始保持计时。图像此前已开始持续录制。",
+    "finish": "结束录制并完成",
+    "finish_tip": "全部档位标记后停止录制、完成写盘并检查本次试验。",
+    "abort": "中止本次录制",
+    "abort_tip": "停止录制并保留当前目录，标记为未完成；再次开始会创建新目录，不会续录。",
     "load": "加载",
     "unload": "卸载",
     "next_step": "下一档：{branch}至 {load:g} N",
-    "before_start": "请先开始试验并录制",
-    "ready_to_finish": "全部档位已确认，请完成并保存",
+    "before_start": "先选测点并启动输入，再开始录制",
+    "ready_to_finish": "全部档位已标记，可结束录制",
     "no_step": "无待确认档位",
     "progress": "进度 {done}/{total} · {status}",
     "held": " · 当前档已保持 {seconds:.1f} s",
     "source_state": "输入：{status} · 帧 {frame} · 采集丢帧 {dropped}",
     "replay_note": "视频重放仅用于调试；本次人工参考力不能与原实验时间同步。",
     "idle": "未开始",
-    "recording": "记录中",
+    "recording": "录制中",
     "closing": "正在写盘",
     "complete": "已完成",
     "incomplete": "未完成",
     "result": "{status}：{path}",
+    "incomplete_result": "本次录制未完成；已写入的数据在：{path}",
     "error": "操作失败：{detail}",
     "invalid_site": "请先选择有效的 UV 测点",
     "start_input": "请先启动相机或视频输入",