Examine source code of minimal time tracker

{
  "manifest_version": 2,
  "name": "minimal time tracker",
  "version": "0.2.6",
  "description": "minimal and elegant web time tracker.",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "tabs",
    "storage",
    "idle",
    "webNavigation",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "blocked.html"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "Minimal Time Tracker"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "time-tracker@vibecoded.local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {}
  }
}