Examine source code of CSES Enhancer Pro

{
  "manifest_version": 3,
  "name": "CSES Enhancer Pro",
  "version": "2.0",
  "description": "Rich text notes, stars, custom stats, and theme memory for CSES.",
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://cses.fi/problemset/*",
        "*://cses.fi/problem/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "cses-enhancer-pro@warrior.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}