Examine source code of Enigma 2.0

{
  "manifest_version": 3,
  "default_locale": "en",
  "name": "__MSG_extName__",
  "version": "1.5.56",
  "description": "__MSG_extDescription__",
  "homepage_url": "https://github.com/NeoEnigma-arch/enigma-2.0",
  "developer": {
    "name": "Krayzen",
    "url": "https://github.com/NeoEnigma-arch"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "enigma-20@text-chiffrierer.addon",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "notifications",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "https://x.com/*",
    "https://twitter.com/*",
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "48": "icons/toolbar-48.png",
      "96": "icons/toolbar-96.png"
    },
    "default_title": "__MSG_extTitle__",
    "default_area": "navbar"
  },
  "options_ui": {
    "page": "ui.html",
    "open_in_tab": true
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "protocol_handlers": [
    {
      "protocol": "web+enigma",
      "name": "Enigma 2.0",
      "uriTemplate": "/decrypt/decrypt.html?d=%s"
    }
  ],
  "background": {
    "scripts": [
      "lib/i18n.js",
      "lib/crypto.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "content/content.css"
      ],
      "js": [
        "lib/i18n.js",
        "lib/crypto.js",
        "content/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "_locales/*/messages.json",
        "fonts/EnigmaRain.ttf"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}