[
  {
    "stage_index": 1,
    "name": "Load Checkpoint & Resume Page",
    "action_type": "setup",
    "description": "Read local checkpoint file to resume from last successfully extracted page index."
  },
  {
    "stage_index": 2,
    "name": "Page Item Batch Extraction",
    "action_type": "inspection",
    "description": "Extract all product cards on current page according to schema."
  },
  {
    "stage_index": 3,
    "name": "Append & Atomic Checkpoint Write",
    "action_type": "output_validation",
    "description": "Persist extracted items to disk before advancing to prevent data loss on network drops."
  },
  {
    "stage_index": 4,
    "name": "Next Page Selector Detection & Click",
    "action_type": "dispatch",
    "description": "Locate and click 'Next Page' button via Stagehand natural language locator."
  },
  {
    "stage_index": 5,
    "name": "Pagination End Condition Check",
    "action_type": "stop_evaluation",
    "description": "Detect if 'Next Page' is disabled, missing, or page content repeats."
  }
]