Examine source code of AppliTrack

{
  "manifest_version": 3,
  "name": "AppliTrack",
  "version": "2.0.3",
  "description": "Auto-track job applications on LinkedIn, Indeed & more. Features Kanban board, analytics, and smart reminders.",
  "homepage_url": "https://appliitrack.vercel.app",
  "permissions": [
    "storage",
    "activeTab",
    "scripting"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "applitrack@vedanshupandey.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "16": "assets/logo16.png",
    "48": "assets/logo48.png",
    "128": "assets/logo128.png"
  },
  "background": {
    "service_worker": "scripts/background.js",
    "scripts": [
      "scripts/background.js"
    ]
  },
  "action": {
    "default_title": "AppliTrack - Track Job Applications",
    "default_popup": "popup/index.html",
    "default_icon": {
      "16": "assets/logo16.png",
      "48": "assets/logo48.png",
      "128": "assets/logo128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.linkedin.com/*"
      ],
      "js": [
        "scripts/TrackerUtils.js",
        "scripts/linkedin.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.indeed.com/*",
        "*://*.indeed.co.in/*"
      ],
      "js": [
        "scripts/TrackerUtils.js",
        "scripts/indeed.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://internshala.com/*"
      ],
      "js": [
        "scripts/TrackerUtils.js",
        "scripts/internshala.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.glassdoor.com/*",
        "*://*.glassdoor.co.in/*"
      ],
      "js": [
        "scripts/TrackerUtils.js",
        "scripts/glassdoor.js"
      ],
      "run_at": "document_idle"
    }
  ]
}