Examine source code of Wordtune: AI Paraphrasing and Grammar Tool

{
  "manifest_version": 3,
  "name": "Wordtune: AI Paraphrasing and Grammar Tool",
  "description": "Unlock your potential with Wordtune's free AI writer � paraphrase, rewrite, translate, fix grammar, and more.",
  "version": "9.20.0",
  "short_name": "Wordtune",
  "icons": {
    "16": "/icon/16.png",
    "32": "/icon/32.png",
    "48": "/icon/48.png",
    "128": "/icon/128.png"
  },
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "support@wordtune.com",
      "strict_min_version": "58.0"
    }
  },
  "permissions": [
    "http://*/*",
    "https://*/*",
    "cookies",
    "storage",
    "scripting",
    "tabs",
    "sidePanel"
  ],
  "side_panel": {
    "default_path": "sidepanel.html"
  },
  "host_permissions": [
    "*://*/*",
    "https://*.wordtune.com/*"
  ],
  "optional_permissions": [
    "clipboardRead",
    "clipboardWrite"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "externally_connectable": {
    "matches": [
      "https://app.wordtune.com/*",
      "https://www.wordtune.com/*"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/browserDetector.js",
        "content-scripts/content.js",
        "content-scripts/read.js"
      ]
    },
    {
      "matches": [
        "*://docs.google.com/document/*"
      ],
      "run_at": "document_start",
      "js": [
        "content-scripts/enableCanvasAnnotations.js"
      ],
      "world": "MAIN"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "js": [
        "content-scripts/wordtuneExtensionInstalled.js"
      ],
      "world": "MAIN"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "asset/**/*.woff",
        "assets/**/*.woff2",
        "assets/**/*.png",
        "assets/**/*.svg",
        "assets/**/*.jpg",
        "assets/**/*.gif",
        "assets/**/*.css",
        "chunks/*.js",
        "content-scripts/*.js"
      ],
      "matches": [
        "*://*/*"
      ]
    },
    {
      "resources": [
        "content-scripts/content.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    },
    {
      "resources": [
        "content-scripts/read.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "service_worker": "background.js"
  },
  "action": {
    "default_title": "Wordtune",
    "default_popup": "popup.html"
  },
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}