Examine source code of FoE Tab Tool

{
  "manifest_version": 3,
  "name": "FoE Tab Tool",
  "version": "2.0.5",
  "browser_specific_settings": {
    "gecko": {
      "id": "{ea50b89e-88f0-4595-ace0-a74840e0ce40}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "142.0"
    }
  },
  "description": "Renames FOE tabs to their world names with some useful information at a glance, including finished productions and new messages!",
  "permissions": [
    "storage",
    "tabs"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.forgeofempires.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "injected.js"
      ],
      "matches": [
        "*://*.forgeofempires.com/*"
      ]
    }
  ]
}