Examine source code of TakeoutCSV2Maps

{
  "manifest_version": 3,
  "name": "TakeoutCSV2Maps",
  "version": "1.0.0",
  "description": "Takeout CSV → Google Maps saved list. Skips duplicate rows. One place at a time.",
  "permissions": [
    "storage",
    "tabs",
    "alarms",
    "downloads"
  ],
  "host_permissions": [
    "https://www.google.com/maps/*"
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_title": "TakeoutCSV2Maps",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "apps@kavkasyan.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.google.com/maps/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}