Examine source code of Jira Layout Customizer

{
  "manifest_version": 3,
  "name": "Jira Layout Customizer",
  "version": "4.5.0",
  "description": "Niestandardowa galeria załączników w Jira (+inne funkcjonalności)",
  "permissions": [
    "storage",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "jira-layout-customizer@extension.local",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.atlassian.net/*"
      ],
      "js": [
        "lib/utif.min.js",
        "lib/pdf.min.js",
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "lib/pdf.worker.min.js"
      ],
      "matches": [
        "https://*.atlassian.net/*"
      ]
    }
  ]
}