Examine source code of Signum XT Wallet

{
  "manifest_version": 2,
  "name": "Signum XT Wallet",
  "version": "1.5.3",
  "omnibox": {
    "keyword": "siggy"
  },
  "icons": {
    "16": "misc/signum-icon-16.png",
    "19": "misc/signum-icon-19.png",
    "38": "misc/signum-icon-38.png",
    "128": "misc/signum-icon-128.png"
  },
  "description": "Cryptocurrency wallet for the green Signum 🍀 blockchain as an extension for your browser.",
  "homepage_url": "https://github.com/signum-network/signum-xt-wallet",
  "short_name": "Signum XT Wallet",
  "permissions": [
    "storage",
    "clipboardWrite",
    "contextMenus",
    "tabs",
    "webNavigation"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "author": "https://signum.network",
  "browser_specific_settings": {
    "gecko": {
      "id": "signum-xt-wallet@signum.network"
    }
  },
  "default_locale": "en",
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "misc/signum-icon-16.png",
      "19": "misc/signum-icon-19.png",
      "38": "misc/signum-icon-38.png",
      "128": "misc/signum-icon-128.png"
    },
    "default_title": "Signum XT Wallet",
    "browser_style": false
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://localhost/*",
        "http://127.0.0.1/*",
        "https://*/*"
      ],
      "js": [
        "contentScript.js"
      ],
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "nostr-provider.js"
  ]
}