* Added security headers to the setupEnvironment method for improved security.
* Implemented stricter validation for the altUrl parameter to ensure it matches allowed domains and uses HTTPS.
* Enhanced script execution checks to validate permissions before running the unraidcheck script.
* Added `UnraidCheckExec` class to handle execution of the unraidcheck script and return JSON responses.
* Updated the unraidcheck script to parse query parameters for better integration with web components.
* This change maintains separation of concerns between UnraidCheck and ReplaceKey functionalities.
