修正 Studio 力曲线原点、运行不可用提示与禁用按钮样式

FN 轴视图留 8% 余量使 0 刻度与静止曲线离开边框；实时视图在轨道上直接写出运行不可用的原因；禁用按钮改为虚线无填充，复选框加勾，单选框选中不再变方，并放大勾选框、微调框箭头、滚动条与菜单行以便触屏操作。另修 ui_check 桩 worker 签名与英文回放提示。在 Linux 离屏环境对比未改动的 HEAD 验证：studio 失败集合为 HEAD 的子集，ui_check 结果一致。

apps/studio/config/locales/en_US.json

@@ -128,8 +128,7 @@
     "cancel_label": "■  Cancel",
     "cancel_tip": "Abort the connection (always available while connecting, shortcut Esc)",
     "run_unavailable": "Not available yet",
-    "run_disabled_video": "Select a video file first",
-    "run_video_in_replay": "Play a video from the History replay view (Play and the chart cursor)",
+    "run_video_in_replay": "Live uses a camera: press Use camera",
     "run_disabled_sensor": "Run is not available for this sensor type",
     "playback": "▶  Play",
     "playback_pause": "⏸  Pause",
@@ -227,8 +226,8 @@
     "field_depth": "depth",
     "recompute_pipeline": "Recomputed from the recording (not the recorded value)",
     "recompute_pipeline_tip": "This frame is what the current algorithm version computes for that footage — not the measurement that was recorded at the time.",
-    "replay_empty": "No video open\nChoose “Recorded video…” above",
-    "arrow_empty": "No image yet\nPick a video or camera, then press Run",
+    "replay_empty": "No video open\nPress “Choose a recorded video…” above",
+    "arrow_empty": "No image yet\nConnect a camera, then press Run above\nOpen recorded videos in Replay",
     "arrow_empty_tip": "The deformation arrow image appears here while running or previewing",
     "arrow_render_failed": "Flow arrows could not be drawn for this frame\nTry another view, or reload the video",
     "arrow_capture_unavailable": "The captured frame is not available for this overlay\nThe raw camera view is still one selection away",