Examine source code of GitHub RichCard

{
  "manifest_version": 2,
  "name": "GitHub RichCard",
  "description": "Extended info for GitHub repos — one-click DeepWiki, stars, forks, issues, and more",
  "version": "0.2.3",
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "https://github.com/*",
    "https://api.github.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "github-richcard@xinbenlv",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "GitHub RichCard",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}