Examine source code of Browser Notes

{
  "manifest_version": 3,
  "name": "Browser Notes",
  "version": "1.0.0",
  "description": "A resizable side-panel notepad that gives every website its own auto-saving note, scoped by hostname.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{ade0aa73-9a3e-42fb-812b-9b68175902e1}",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png",
    "192": "assets/icon-192.png",
    "512": "assets/icon-512.png"
  },
  "action": {
    "default_title": "Toggle Browser Notes",
    "default_icon": {
      "16": "assets/icon-16.png",
      "32": "assets/icon-32.png",
      "48": "assets/icon-48.png",
      "128": "assets/icon-128.png",
      "192": "assets/icon-192.png",
      "512": "assets/icon-512.png"
    }
  },
  "sidebar_action": {
    "default_panel": "popup.html",
    "default_title": "Browser Notes",
    "default_icon": {
      "16": "assets/icon-16.png",
      "32": "assets/icon-32.png",
      "48": "assets/icon-48.png",
      "128": "assets/icon-128.png",
      "192": "assets/icon-192.png",
      "512": "assets/icon-512.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  }
}