Examine source code of ExamMarkEntry_KVS_Samagam

{
  "manifest_version": 3,
  "name": "ExamMarkEntry - KVS Samagam Quick Fill",
  "version": "2.1.0",
  "description": "KVS Samagam Marks Entry grid ko auto-detect karke XLSX template banata hai aur Excel se copy-paste se poori grid ek click me fill karta hai.",
  "browser_specific_settings": {
    "gecko": {
      "id": "exammarkentry@eduworkflow.in",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "https://samagam.kvs.gov.in/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://samagam.kvs.gov.in/*"
      ],
      "js": [
        "xlsx.mini.min.js",
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ]
}