Examine source code of GitRec

{
  "name": "GitRec",
  "description": "A recommender system for GitHub repositories based on Gorse",
  "version": "0.10",
  "manifest_version": 3,
  "permissions": [
    "scripting",
    "webNavigation"
  ],
  "host_permissions": [
    "https://gitrec.gorse.io/*",
    "*://github.com/*"
  ],
  "action": {
    "default_icon": {
      "306": "logo.png"
    }
  },
  "icons": {
    "306": "logo.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://github.com/*"
      ],
      "js": [
        "jquery-3.6.1.min.js",
        "colors.js",
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "zhangzhenghao@hotmail.com"
    }
  }
}