Examine source code of Ebay Product Filter

{
  "manifest_version": 3,
  "name": "Ebay Product Filter",
  "version": "1.1",
  "description": "eBay选品页面，自动过滤已读数据，并支持数据显示、隐藏已读、重置数据。",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.ebay.com/sh/research*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "wfsoillar@outlook.com",
      "strict_min_version": "109.0"
    }
  }
}