Examine source code of EndpointCompare

{
  "manifest_version": 3,
  "name": "EndpointCompare",
  "version": "1.0.0",
  "description": "Compare two API endpoint responses (JSON/XML) with a side-by-side diff view.",
  "permissions": [
    "contextMenus",
    "storage",
    "activeTab",
    "scripting",
    "tabs",
    "clipboardWrite"
  ],
  "options_ui": {
    "page": "src/options/options.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "action": {
    "default_popup": "src/popup/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/content.js"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "endpointcompare@bkkothari2255.invalid",
      "strict_min_version": "109.0"
    }
  }
}