Examine source code of Standard Reader

{
  "manifest_version": 2,
  "name": "Standard Reader",
  "description": "Save articles and follow publications on the standard.site network.",
  "version": "0.4.1",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icon/96.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "tabs",
    "activeTab",
    "storage",
    "cookies",
    "contextMenus",
    "https://standard-reader.app/*",
    "https://bsky.app/*",
    "https://witchsky.app/*",
    "https://mu.social/*",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "standard-reader@standard-reader.app",
      "data_collection_permissions": {
        "required": [
          "browsingActivity",
          "authenticationInfo",
          "websiteActivity"
        ]
      }
    }
  },
  "options_ui": {
    "open_in_tab": false,
    "page": "options.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Standard Reader",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://standard-reader.app/extension/connected*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/auth-callback.js"
      ]
    },
    {
      "matches": [
        "https://bsky.app/*",
        "https://mu.social/*",
        "https://witchsky.app/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/bsky-embed.js"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "*://*.standard-reader.app/*",
        "*://bsky.app/*",
        "*://mu.social/*",
        "*://standard-reader.app/*",
        "*://witchsky.app/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "content-scripts/content.css"
  ]
}