Examine source code of AstoundDrive - Google Drive as Encrypted ZIP

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "short_name": "AstoundDrive",
  "version": "1.0.0",
  "description": "__MSG_extDescription__",
  "default_locale": "en",
  "author": "Astound Technology",
  "homepage_url": "https://astound.technology",
  "browser_specific_settings": {
    "gecko": {
      "id": "astounddrive@astound.technology",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "downloads",
    "webRequest",
    "webRequestBlocking"
  ],
  "host_permissions": [
    "*://drive.google.com/*",
    "*://clients6.google.com/*",
    "*://drive.usercontent.google.com/*",
    "*://docs.google.com/*",
    "*://*.googleusercontent.com/*"
  ],
  "action": {
    "default_popup": "src/popup/index.html",
    "default_icon": {
      "16": "assets/icons/icon16.png",
      "32": "assets/icons/icon32.png",
      "48": "assets/icons/icon48.png",
      "128": "assets/icons/icon128.png"
    },
    "default_title": "AstoundDrive"
  },
  "icons": {
    "16": "assets/icons/icon16.png",
    "32": "assets/icons/icon32.png",
    "48": "assets/icons/icon48.png",
    "128": "assets/icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://drive.google.com/*"
      ],
      "js": [
        "src/content/lib/logger.js",
        "src/content/lib/constants.js",
        "src/content/lib/utils.js",
        "src/content/lib/auth.js",
        "src/content/lib/bridge.js",
        "src/content/lib/fetch-adapter.js",
        "src/content/lib/strategies.js",
        "src/content/lib/drive-api.js",
        "src/content/lib/zip-builder.js",
        "src/content/ui/template.js",
        "src/content/ui/password.js",
        "src/content/ui/modal.js",
        "src/content/ui/toolbar.js",
        "src/content/main.js"
      ],
      "css": [
        "src/content/styles.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "src/shared/zip.js",
      "src/background/background.js"
    ]
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "assets/icons/*"
      ],
      "matches": [
        "*://drive.google.com/*"
      ]
    }
  ]
}