Examine source code of ProjectionLab Account Sync

{
  "manifest_version": 3,
  "name": "ProjectionLab Account Sync",
  "description": "Browser extension to sync brokerage account balances into ProjectionLab",
  "version": "0.9.0",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "projectionlab-account-sync@extension",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "projectionlab-main.js"
      ],
      "matches": [
        "https://app.projectionlab.com/*",
        "https://ea.projectionlab.com/*"
      ]
    }
  ],
  "host_permissions": [
    "https://app.projectionlab.com/*",
    "https://ea.projectionlab.com/*",
    "https://www.vanguard.com/en/investor/portfolio/dashboard/*",
    "https://api.ynab.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "ProjectionLab Sync",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://app.monarch.com/*",
        "https://worklife.alight.com/*",
        "https://www.vanguard.com/en/investor/portfolio/investments/*"
      ],
      "css": [
        "content-scripts/plugin.css"
      ],
      "js": [
        "content-scripts/plugin.js"
      ]
    },
    {
      "matches": [
        "https://app.projectionlab.com/*",
        "https://ea.projectionlab.com/*"
      ],
      "js": [
        "content-scripts/projectionlab.js"
      ]
    }
  ]
}