Examine source code of Paced Extension

{
  "manifest_version": 3,
  "name": "Paced Extension",
  "version": "2.0",
  "description": "Extension for see what is your actual Pace.",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "addon@tzeribi.fr",
      "strict_min_version": "78.0"
    },
    "gecko_android": {}
  },
  "host_permissions": [
    "https://pace-system.42.fr/api/v1/users/me"
  ],
  "incognito": "spanning",
  "content_scripts": [
    {
      "matches": [
        "*://profile.intra.42.fr/"
      ],
      "js": [
        "srcs/utils/utils.js",
        "srcs/utils/console.js",
        "srcs/init.js",
        "srcs/paced.js"
      ],
      "css": [
        "srcs/fonts/custom.css"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://profile.intra.42.fr/"
      ],
      "js": [
        "srcs/main.js"
      ],
      "css": [
        "srcs/fonts/paced.css"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "srcs/utils/console.js",
      "srcs/main.js"
    ]
  }
}