Examine source code of Cred Mail

{
  "manifest_version": 3,
  "name": "Cred Mail",
  "version": "1.1.2",
  "description": "Local, privacy-first phishing detection.",
  "permissions": [
    "storage",
    "webNavigation"
  ],
  "host_permissions": [
    "https://mail.google.com/*",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "js": [
        "content_gmail.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_protector.js"
      ],
      "run_at": "document_end"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "assets/icon16.png",
      "48": "assets/icon48.png",
      "128": "assets/icon128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "quiet-security@sohan.dev",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}