Examine source code of CatchIntent

{
  "manifest_version": 3,
  "name": "CatchIntent",
  "version": "0.6.1",
  "description": "The Intent Layer for B2B Outbound",
  "icons": {
    "16": "assets/icon-16.png",
    "48": "assets/icon-48.png",
    "96": "assets/icon.png",
    "128": "assets/icon-128.png"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "https://www.linkedin.com/*",
    "https://engine.catchintent.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.linkedin.com/*"
      ],
      "js": [
        "content-linkedin.js"
      ]
    },
    {
      "matches": [
        "https://www.linkedin.com/*"
      ],
      "js": [
        "voyager-interceptor.js"
      ],
      "world": "MAIN",
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_popup": "src/popup/index.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "extension@catchintent.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}