Examine source code of Aozora History

{
  "manifest_version": 3,
  "name": "Aozora History",
  "version": "0.11.3",
  "description": "GMOあおぞらネット銀行のつかいわけ口座の残高と振替履歴を記録し、ダッシュボードで確認できる拡張機能",
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "action": {
    "default_icon": "icon.svg",
    "default_title": "Aozora History ダッシュボード"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://bank.gmo-aozora.com/*",
    "https://*.r2.cloudflarestorage.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://bank.gmo-aozora.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "aozora-history@example.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    },
    "gecko_android": {
      "strict_min_version": "120.0"
    }
  }
}