Examine source code of Nexus-OS GitHub Ultimate

{
  "manifest_version": 2,
  "name": "Nexus-OS GitHub Ultimate",
  "version": "1.0.0",
  "description": "The ultimate GitHub enhancement suite: file tree navigation, code utilities, and powerful workflows.",
  "author": "Nexus Development",
  "icons": {
    "128": "assets/icon-128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "*://github.com/*",
    "*://api.github.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://github.com/*"
      ],
      "js": [
        "content/tree.js",
        "content/ui.js",
        "content/utilities.js",
        "content/main.js"
      ],
      "css": [
        "styles/sidebar.css",
        "styles/ui.css",
        "styles/utilities.css"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "persistent": false
  },
  "web_accessible_resources": [
    "assets/icon-128.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "nexus-github-ultimate@example.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}