Examine source code of Smart Content Search Beta

{
  "manifest_version": 3,
  "name": "Smart Content Search Beta",
  "version": "1.0",
  "description": "Smart Content Search Beta is an intelligent in‑page search extension under active development. It semantically scans page content, supports multilingual synonyms and fuzzy matching, and adapts its scanning depth. A refined glass‑effect interface, an adaptive collapsed view, custom filter and sort options, responsive typography and per‑site persistent settings are all included. Donation links are provided to support ongoing development.",
  "action": {
    "default_title": "Smart Content Search",
    "default_popup": "index.html"
  },
  "icons": {
    "16": "icon_16.png",
    "32": "icon_32.png",
    "48": "icon_48.png",
    "128": "icon_128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "index.js"
      ],
      "css": [
        "index.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "smart-content-search-beta@example.com"
    }
  }
}