Examine source code of SignBridge

{
  "manifest_version": 3,
  "name": "SignBridge",
  "version": "1.0.0",
  "description": "Generic Web HSM Signing Protocol Adapter",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background/service-worker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content/content-script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "nativeMessaging",
    "storage"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "signbridge@ase.ro",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}