Examine source code of CareerOS Capture

{
  "manifest_version": 2,
  "name": "CareerOS Capture",
  "description": "Save job posts into CareerOS.",
  "version": "1.0.1",
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "identity",
    "http://localhost:3000/*",
    "http://127.0.0.1:3000/*",
    "https://*.vercel.app/*",
    "https://*.careeros.app/*",
    "https://securetoken.googleapis.com/*",
    "https://identitytoolkit.googleapis.com/*",
    "https://oauth2.googleapis.com/*",
    "https://github.com/*"
  ],
  "oauth2": {
    "client_id": "718498812867-p52c7gpu88knteg1lrrne317vac6l44o.apps.googleusercontent.com",
    "scopes": [
      "https://www.googleapis.com/auth/userinfo.email",
      "https://www.googleapis.com/auth/userinfo.profile"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://linkedin.com/*",
        "*://*.linkedin.com/*",
        "*://indeed.com/*",
        "*://*.indeed.com/*",
        "*://naukri.com/*",
        "*://*.naukri.com/*"
      ],
      "js": [
        "src/contentScript.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_popup": "src/popup.html",
    "default_title": "Save to CareerOS"
  },
  "content_security_policy": "script-src 'self'; object-src 'self'; connect-src 'self' http://localhost:3000 http://127.0.0.1:3000 https://*.vercel.app https://*.careeros.app https://securetoken.googleapis.com https://identitytoolkit.googleapis.com https://oauth2.googleapis.com https://github.com",
  "browser_specific_settings": {
    "gecko": {
      "id": "capture@careeros.app",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "browsingActivity",
          "websiteActivity",
          "websiteContent"
        ]
      },
      "strict_min_version": "140.0"
    }
  }
}