Examine source code of CP Code Manager

{
  "manifest_version": 3,
  "name": "CP Code Manager (LeetCode)",
  "version": "0.1.0",
  "description": "Extracts accepted LeetCode submissions and prepares them for GitHub sync.",
  "permissions": [
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "https://leetcode.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://leetcode.com/*"
      ],
      "js": [
        "ui.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "ui.html",
        "ui.css"
      ],
      "matches": [
        "https://leetcode.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "cp-code-manager@leetcode",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}