{
  "id": "07-automation",
  "title": "Automation",
  "icon": "⚙",
  "level": "advanced",
  "lessons": [
    {
      "id": "7.1",
      "title": "Schedule commands with cron",
      "objective": "Run a command on an interval and manage the schedule.",
      "minutes": 8,
      "commands": [
        "cron-every",
        "cron-list",
        "cron-stop",
        "cron-clear"
      ],
      "blocks": [
        {
          "type": "text",
          "text": "`cron-every` schedules a command inside the terminal (minimum 5 seconds). Jobs live only while the tab is open."
        },
        {
          "type": "cmd",
          "text": "cron-every 60 echo hello"
        },
        {
          "type": "cmd",
          "text": "cron-list"
        },
        {
          "type": "cmd",
          "text": "cron-stop 1"
        },
        {
          "type": "cmd",
          "text": "cron-clear"
        },
        {
          "type": "tip",
          "text": "For server-side schedules use Hermes cron; the terminal scheduler is per-tab."
        }
      ],
      "exercise": {
        "instruction": "List active cron jobs.",
        "accept": [
          "cron-list"
        ],
        "check": {
          "type": "command"
        },
        "hint": "Type: cron-list"
      },
      "quiz": {
        "q": "How long does a terminal cron job live?",
        "options": [
          "forever on the server",
          "while the tab is open",
          "until reboot"
        ],
        "answer": 1
      },
      "sources": [
        "modules/ext/cron.js"
      ]
    },
    {
      "id": "7.2",
      "title": "Kanban and checkpoints",
      "objective": "Track work on a board and snapshot the VFS before risky changes.",
      "minutes": 8,
      "commands": [
        "kanban",
        "checkpoint",
        "checkpoint-list",
        "rollback"
      ],
      "blocks": [
        {
          "type": "text",
          "text": "`kanban` is a local board with todo/doing/done columns. `checkpoint` snapshots the VFS; `rollback` restores it."
        },
        {
          "type": "cmd",
          "text": "kanban add \"Try the course\""
        },
        {
          "type": "cmd",
          "text": "kanban list"
        },
        {
          "type": "cmd",
          "text": "checkpoint before-project"
        },
        {
          "type": "cmd",
          "text": "checkpoint-list"
        },
        {
          "type": "cmd",
          "text": "rollback before-project"
        },
        {
          "type": "warn",
          "text": "`rollback` replaces current VFS state — checkpoint before experiments."
        }
      ],
      "exercise": {
        "instruction": "Create a checkpoint.",
        "accept": [
          "checkpoint *",
          "checkpoint"
        ],
        "check": {
          "type": "command"
        },
        "hint": "Type: checkpoint my-test"
      },
      "quiz": {
        "q": "What does checkpoint do?",
        "options": [
          "snapshots the VFS",
          "deletes files",
          "pushes to WebDAV"
        ],
        "answer": 0
      },
      "sources": [
        "modules/ext/kanban.js",
        "modules/core/module-fs.js"
      ]
    }
  ]
}