Examine source code of Widgets Board

{
  "manifest_version" : 3 ,
  "name" : "Widgets Board",
  "version" : "1.1.0",
  "description" : "A beautiful sidebar dashboard with draggable widgets: weather, clock, Bitcoin, gold, date and more. English, Arabic, German.",
  "icons" : {
    "48" : "icons/icon.svg",
    "96" : "icons/icon.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "widgets-board@example.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions" : [
    "storage" ,
    "geolocation" ,
    "search" ,
    "topSites" 
  ],
  "host_permissions" : [
    "https://api.open-meteo.com/*" ,
    "https://geocoding-api.open-meteo.com/*" ,
    "https://data-api.binance.vision/*" ,
    "https://api.gold-api.com/*" ,
    "https://open.er-api.com/*" ,
    "https://air-quality-api.open-meteo.com/*" ,
    "https://api.aladhan.com/*" ,
    "https://api.alternative.me/*" 
  ],
  "action" : {
    "default_title" : "Widgets Board",
    "default_icon" : "icons/icon.svg"
  },
  "sidebar_action": {
    "default_title" : "Widgets Board",
    "default_panel": "dashboard.html",
    "default_icon" : "icons/icon.svg",
    "open_at_install": true
  },
  "background" : {
    "scripts" : [
      "background.js" 
    ]
  },
  "commands" : {
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Alt+Shift+W"
      },
      "description" : "Toggle Widgets Board"
    }
  }
}