Examine source code of Gridt

{
  "manifest_version": 3,
  "name": "gridt",
  "version": "1.1.0",
  "description": "CSS Grids for modern web developers.",
  "author": "Gavin Kondrath",
  "homepage_url": "https://github.com/gavink97/gridt",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "images/kofi_symbol.webp"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "scripting",
    "webNavigation"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    },
    "default_title": "gridt",
    "default_popup": "./dist/popup/index.html"
  },
  "content_security_policy": {
    "extension_pages": "default-src 'self'"
  },
  "commands": {
    "toggle-feature": {
      "suggested_key": {
        "default": "Ctrl+Period"
      },
      "description": "Toggle grid"
    }
  },
  "background": {
    "scripts": [
      "./dist/background/background.js"
    ],
    "type": "module"
  },
  "options_ui": {
    "page": "./dist/options/index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "gavin@gav.ink",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}