Examine source code of schedulr

{
  "manifest_version": 3,
  "name": "schedulr",
  "version": "4.1.0",
  "description": "It scrapes the timetable from CliC and inserts it into google calendar",
  "browser_specific_settings": {
    "gecko": {
      "id": "schedulr@mmuschedulr.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "websiteContent",
          "personallyIdentifyingInfo"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "icons": {
    "16": "images/magnify16.png",
    "32": "images/magnify32.png",
    "48": "images/magnify48.png",
    "128": "images/magnify128.png"
  },
  "action": {
    "default_popup": "frontend/src/popup/popup.html"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+Shift+S",
        "linux": "Alt+Shift+S",
        "mac": "Command+Shift+S",
        "windows": "Alt+Shift+S"
      },
      "description": "Open schedulr's popup.html"
    }
  },
  "background": {
    "scripts": [
      "frontend/src/backgrounds/serviceWorker.js"
    ],
    "type": "module"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "identity",
    "storage",
    "notifications"
  ],
  "host_permissions": [
    "https://*.workers.dev/*"
  ]
}