Examine source code of BrasilGuard Agenda

{
  "manifest_version": 2,
  "name": "BrasilGuard Agenda",
  "version": "0.2.14",
  "description": "BrasilGuard Agenda v0003.h: agenda protegida com OAuth Google sem segredo no cliente, Google Calendar, operação offline e comissões/rateio.",
  "permissions": [
    "storage",
    "notifications",
    "alarms",
    "identity",
    "https://zwtmcqtepkzxuhilxyjx.supabase.co/*",
    "https://openidconnect.googleapis.com/*",
    "https://www.googleapis.com/*",
    "https://accounts.google.com/*"
  ],
  "browser_action": {
    "default_title": "Abrir BrasilGuard Agenda"
  },
  "background": {
    "scripts": [
      "config.js",
      "background.js"
    ],
    "persistent": false
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "agenda@brasilguard.local",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personallyIdentifyingInfo"
        ]
      }
    }
  }
}