{
  "_note": "crop mode: one source photo sliced into 9 tiles on startup. Data dir is relative to assets/image_select/. Server samples one entry with labeled=true per reset.",
  "content": {
    "data_dir": "crop/crosswalk",
    "target_label": "crosswalks"
  },
  "render": {
    "tile_display_px": 150,
    "grid_gap_px": 4
  }
}