Examine source code of SiteChattr

{
  "manifest_version": 3,
  "name": "SiteChattr",
  "description": "A browser plugin to add a chatroom to any web page powered by the nostr protocol",
  "version": "1.3",
  "browser_specific_settings": {
    "gecko": {
      "id": "sitechattr@czino.de"
    }
  },
  "action": {
    "default_icon": {
      "16": "SiteChattr-16.png",
      "48": "SiteChattr-48.png",
      "128": "SiteChattr-128.png"
    },
    "default_title": "Open SiteChattr"
  },
  "icons": {
    "16": "SiteChattr-16.png",
    "48": "SiteChattr-48.png",
    "128": "SiteChattr-128.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "sidePanel",
    "sidebarAction"
  ],
  "side_panel": {
    "default_path": "index.html"
  },
  "sidebar_action": {
    "default_title": "SiteChattr",
    "default_panel": "index.html",
    "default_icon": "SiteChattr-128.png"
  },
  "browser_action": {
    "default_icon": "SiteChattr-128.png",
    "default_title": "Open SiteChattr"
  },
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self';"
  }
}