Examine source code of Job Application Tracker

{
  "manifest_version": 3,
  "name": "Job Application Tracker",
  "version": "1.3.1",
  "description": "Track your job applications: save a posting with one click, set status (open/applied/offer/rejected), notes, follow-up reminder, search and export. Everything stays local, no cloud.",
  "author": "clankdev",
  "action": {
    "default_popup": "popup.html",
    "default_title": "Job Application Tracker",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "job-application-tracker@clankdev",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}