Examine source code of Job Tracker Extractor

{
  "manifest_version": 3,
  "name": "Job Tracker Extractor",
  "version": "1.0.0",
  "description": "Extract job applications from LinkedIn, Naukri, Wellfound, Internshala – unified format for MockMate",
  "author": "Shaik Fayaz",
  "browser_specific_settings": {
    "gecko": {
      "id": "fayaz03c9@gmail.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "scripting",
    "tabs",
    "cookies"
  ],
  "host_permissions": [
    "https://www.linkedin.com/jobs-tracker/*",
    "https://www.naukri.com/*",
    "https://www.wellfound.com/*",
    "https://wellfound.com/*",
    "https://internshala.com/*",
    "https://www.internshala.com/*",
    "http://localhost:5000/*",
    "http://localhost:5173/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.linkedin.com/jobs-tracker/*"
      ],
      "js": [
        "content-linkedin.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://www.naukri.com/*"
      ],
      "js": [
        "content-naukri.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://wellfound.com/*",
        "https://www.wellfound.com/*"
      ],
      "js": [
        "content-wellfound.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://internshala.com/student/applications/*",
        "https://www.internshala.com/student/applications/*"
      ],
      "js": [
        "content-internshala.js"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon16.png"
  },
  "icons": {
    "16": "icons/icon16.png"
  }
}