Examine source code of Shoppin

{
  "manifest_version": 2,
  "name": "Shoppin",
  "description": "Earn Gold while you shop — smart price history, AI review analysis & buy advice",
  "version": "0.1.11",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "alarms",
    "identity",
    "*://*.shopee.vn/*",
    "https://shoppin.today/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "shoppin@kienvan.de",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personallyIdentifyingInfo",
          "browsingActivity"
        ],
        "optional": []
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Shoppin",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.shopee.vn/*"
      ],
      "css": [
        "content-scripts/content.css"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    },
    {
      "matches": [
        "*://*.shopee.vn/*"
      ],
      "run_at": "document_start",
      "css": [
        "content-scripts/intercept.css"
      ],
      "js": [
        "content-scripts/intercept.js",
        "content-scripts/spa-bridge.js"
      ],
      "world": "MAIN"
    }
  ]
}