Examine source code of Aar318's Session Vault

{
  "manifest_version": 3,
  "name": "Aar318's Session Vault",
  "author": "Hor318",
  "version": "1.0.0.3",
  "description": "Save and switch multiple named login sessions per site from a private toolbar vault.",
  "permissions": [
    "contextMenus",
    "cookies",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "icons/icon-128.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "Aar318's Session Vault",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+Shift+V"
      },
      "description": "Open Session Vault"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a3185e55-10b7-45b2-93ef-43e5105a44b0}",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}