Examine source code of Google No AI Search

{
  "manifest_version": 3,
  "name": "Google AI Search",
  "version": "1.0",
  "description": "Automatically adds -ai to Google searches.",
  "permissions": [
    "declarativeNetRequest"
  ],
  "host_permissions": [
    "*://www.google.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@google-ai-search-adhi",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "rules",
        "enabled": true,
        "path": "rules.json"
      }
    ]
  }
}