Examine source code of FocusTab

{
  "manifest_version": 3,
  "name": "FocusTab",
  "version": "1.0.0",
  "description": "Notion-powered productivity panel on every new tab",
  "author": "Sanjai",
  "browser_specific_settings": {
    "gecko": {
      "id": "focustab@sanjai.dev",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "collection_submission": false,
        "third_party_collection": false
      }
    }
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "permissions": [
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "https://api.notion.com/*"
  ],
  "icons": {
    "48": "public/icons/icon-48.png",
    "96": "public/icons/icon-96.png",
    "128": "public/icons/icon-128.png"
  }
}