Examine source code of Sentinel Shield

{
  "manifest_version": 3,
  "name": "Sentinel Shield",
  "version": "3.0",
  "description": "A privacy-first browser extension for secure password management, 2FA, and protection against XSS, CSRF, and fingerprinting.",
  "permissions": [
    "storage",
    "activeTab",
    "scripting",
    "clipboardWrite",
    "notifications"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "injected.js"
      ],
      "run_at": "document_start",
      "world": "MAIN"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "sentinelshield.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0195a981-a99f-776b-b630-928a6cf0cff6}"
    }
  }
}