Examine source code of Retyc for Gmail

{
  "manifest_version": 3,
  "name": "Retyc for Gmail",
  "short_name": "Retyc",
  "description": "Send large files securely from Gmail: end-to-end encrypted, GDPR-compliant.",
  "version": "0.0.1",
  "homepage_url": "https://retyc.com",
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "permissions": [
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "https://mail.google.com/*",
    "https://api.retyc.com/*",
    "https://auth.retyc.com/*"
  ],
  "background": {
    "service_worker": "service-worker-loader.js",
    "type": "module",
    "scripts": [
      "service-worker-loader.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "assets/index.ts-loader-CL-ZsGUz.js"
      ],
      "matches": [
        "https://mail.google.com/*"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "resources": [
        "src/iframe/iframe.html",
        "assets/*",
        "chunks/*",
        "pageWorld.js",
        "chunks/rolldown-runtime-BPc3_TN3.js",
        "chunks/inboxsdk-B74IDsuv.js",
        "chunks/vendor-B-jAFiUR.js",
        "chunks/protocol-CadX8C3z.js",
        "chunks/index.ts-CykzF_eF.js"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'; connect-src 'self' https://api.retyc.com https://auth.retyc.com"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "retyc-for-gmail@retyc.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}