Examine source code of LeetCode to GitHub Sync

{
  "manifest_version": 3,
  "name": "LeetCode to GitHub Sync",
  "version": "2.0.0",
  "description": "Automatically push accepted LeetCode submissions to your GitHub repository",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://leetcode.com/*",
    "https://api.github.com/*"
  ],
  "content_security_policy": {
    "extension_pages": "default-src 'self'; script-src 'self'; script-src-attr 'none'; style-src 'self'; object-src 'none'; base-uri 'none'; frame-ancestors 'none'; connect-src https://api.github.com https://leetcode.com;"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://leetcode.com/*",
        "https://leetcode.cn/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*"
      ],
      "matches": [
        "https://leetcode.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "leetcode-github-sync@extension.local",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "websiteContent"
        ],
        "description": "This extension collects your GitHub Personal Access Token, GitHub username, and repository name to push LeetCode submissions to your specified repository. It also reads problem details (title, number, difficulty, code, language) from LeetCode submission pages. No data is sent to any third party — only to GitHub's API as configured by you."
      }
    }
  }
}