Examine source code of Elbi Gradesim

{
  "manifest_version": 3,
  "name": "Elbi GradeSim - UPLB GWA Calculator",
  "version": "1.2.1",
  "browser_specific_settings": {
    "gecko": {
      "id": "elbigradesim@stimmie.dev",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "120.0"
    }
  },
  "description": "Calculate your GWA and simulate grades needed for Latin honors at UPLB. All data stays on your device.",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://amis.uplb.edu.ph/*",
    "https://api-amis.uplb.edu.ph/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "128": "sims.png"
    }
  },
  "icons": {
    "128": "sims.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://amis.uplb.edu.ph/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ]
}