autocal: 序列页阵列预览工具、2D 图点可见度，标签顺序与送到标定页

- 标签顺序：几何与安装 放到 测试序列 之前
- 序列点增加可选 uv_px（向后兼容），点表新增 U/V 列；加入所选点、删除所选、
  送到标定页（按 U/V 经同一套求解加入标定队列并切换页面）
- 已选点结果改显示在选点区状态行，不再写入全局顶部状态条
- 序列页左上区改紧凑：名称与备注同一行，分“阵列”“运动参数”两页；
  运动参数每行三组，输入框改用 compactField
- 新增阵列工具（array_plan.py、ui/array_tool.py）：UV 规则网格（可蛇形遍历）与
  阶段预设，逐点检查是否在曲面内、是否留有边距，候选点实时预览在 2D 图上，
  只有可用点才能加入，已在序列里的点不重复加入
- 2D 平面图：标记改为缩放后再绘制并加深色描边，修复缩小后点不清；
  底图可选 原图/灰度/变暗/仅轮廓，点色可选 黄/白/青/橙/灰（默认灰度+黄，写入偏好）；
  序列点带编号并连线显示遍历顺序，选中行高亮
- 新增测试 test_sequence_uv、test_sequence_to_capture、test_array_plan、test_array_tool

apps/autocal/config/locales/en_US.json

@@ -494,7 +494,18 @@
     "preview_solve_failed": "Solve failed: {error}",
     "loaded": "Bundle loaded: {vertices} vertices · {triangles} triangles · {extent} mm · {scale} mm per unit",
     "load_failed": "Load failed: {error}",
-    "picked": "Picked: residual {residual}° · yaw {yaw}° · pitch {pitch}°"
+    "picked": "Picked: residual {residual}° · yaw {yaw}° · pitch {pitch}°",
+    "bg_label": "Map",
+    "colour_label": "Dots",
+    "bg_original": "Original",
+    "bg_gray": "Grey",
+    "bg_dim": "Dimmed",
+    "bg_outline": "Outline",
+    "colour_yellow": "Yellow",
+    "colour_white": "White",
+    "colour_cyan": "Cyan",
+    "colour_orange": "Orange",
+    "colour_grey": "Grey"
   },
   "sequence": {
     "title": "Test sequence design",
@@ -556,7 +567,19 @@
     "imported": "Sequence imported: {name} ({count} points)",
     "import_warnings": "Import reported {count} warning(s)",
     "confirm_discard": "The current sequence has not been exported. Importing replaces it. Continue?",
-    "points_hint": "Coordinates are generated and checked per point; they are not typed. A typed coordinate is one nothing has checked, and one wrong number ruins a run."
+    "points_hint": "Coordinates are generated and checked per point; they are not typed. A typed coordinate is one nothing has checked, and one wrong number ruins a run.",
+    "col_u": "U (px)",
+    "col_v": "V (px)",
+    "btn_send": "Send to capture ({count})",
+    "send_tip": "Add the selected points to the capture page's queue by U/V and switch to it.",
+    "send_none": "Select rows that have U/V first.",
+    "btn_add_picked": "Add picked point",
+    "add_picked_tip": "Add the point just picked on the 2D map to the sequence, with its U/V.",
+    "btn_remove": "Remove selected",
+    "add_picked_none": "Pick a point on the 2D map first.",
+    "add_picked_duplicate": "That point is already row {row} of the sequence.",
+    "tab_array": "Array",
+    "tab_motion": "Motion"
   },
   "action": {
     "ok": "Done",
@@ -903,7 +926,8 @@
       "queue_removed": "Point removed: {site}",
       "skipped": "Point skipped: {site}",
       "stopped": "Stopped; the data already written is kept.",
-      "done": "Session finished: {path}"
+      "done": "Session finished: {path}",
+      "queue_added_many": "{added} point(s) added to the capture queue, {refused} could not be added."
     },
     "recording": {
       "title": "Recording",
@@ -974,5 +998,33 @@
     "confirm_title": "Write UNITS",
     "confirm_body": "The following UNITS will be written to the controller:\n{changes}\n\nAfterwards every millimetre and degree reading, and every pose-move target, is recomputed with the new equivalent. Confirm that the platform is stopped and the mechanical ratio has been checked.",
     "confirm_rotary": "Note: UNITS for {roles} is not the calibration equivalent {cal}; the rotary axis has no angle scale at that value, so pose moves are refused until it is recalibrated."
+  },
+  "array": {
+    "mode": "Type",
+    "margin": "Margin (px)",
+    "rows": "Rows",
+    "cols": "Columns",
+    "u_pitch": "U pitch (px)",
+    "v_pitch": "V pitch (px)",
+    "centre_u": "Centre U",
+    "centre_v": "Centre V",
+    "preset": "Stage",
+    "mode_grid": "Regular grid",
+    "mode_preset": "Staged preset",
+    "serpentine": "Serpentine order",
+    "centre_from_pick": "Centre on pick",
+    "centre_from_pick_tip": "Use the point just picked on the flat map as the grid centre.",
+    "show_preview": "Preview on the map",
+    "btn_add": "Add to sequence ({count})",
+    "none": "No candidate points.",
+    "all_ok": "{total} candidates, all on the surface.",
+    "some_bad": "{total} candidates: {usable} usable, {off} off the surface, {edge} too near the edge. Only usable points can be added.",
+    "preset_hint": "Staged presets are the suggested starting layout, taken from the planning figure: confirm the hardware with stage 0, then add more. Every point is checked against the current surface; ones off it or inside the margin get a red cross and are not added. A point already in the sequence is not added twice.",
+    "preset_stage0": "Stage 0 · hardware check (1 point)",
+    "preset_stage1": "Stage 1 · calibration 3×3 (9 points)",
+    "preset_stage1_check": "Stage 1 · independent checks (4 points)",
+    "preset_stage2": "Stage 2 · more calibration (8 points)",
+    "preset_stage2_check": "Stage 2 · more checks (4 points)",
+    "added": "{added} point(s) added, {repeated} already in the sequence, {failed} could not be solved."
   }
 }