Examine source code of Stasharr

{
  "manifest_version": 3,
  "name": "Stasharr Add-On",
  "version": "0.3.0",
  "description": "Standalone Stasharr browser add-on.",
  "action": {
    "default_title": "Stasharr",
    "default_icon": {
      "16": "icons/stasharr-16.png",
      "32": "icons/stasharr-32.png",
      "48": "icons/stasharr-48.png",
      "96": "icons/stasharr-96.png",
      "128": "icons/stasharr-128.png"
    }
  },
  "icons": {
    "16": "icons/stasharr-16.png",
    "32": "icons/stasharr-32.png",
    "48": "icons/stasharr-48.png",
    "96": "icons/stasharr-96.png",
    "128": "icons/stasharr-128.png"
  },
  "background": {
    "scripts": [
      "background/background-firefox.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://stashdb.org/*"
      ],
      "js": [
        "shared/navigation.js",
        "content/pageParser.js",
        "content/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "content/options.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://stashdb.org/*"
  ],
  "optional_host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; connect-src http: https:; img-src 'self' data:; style-src 'self' 'unsafe-inline'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "stasharr@example.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "websiteContent"
        ]
      }
    }
  }
}