Introduces CSRF protection to all sensitive controller actions, integrates configurable CAPTCHA (reCAPTCHA v2/v3, Turnstile) for authentication and registration flows, and centralizes input validation via a new InputValidator helper. Adds new helpers and services for CSRF and CAPTCHA, updates settings and migration for CAPTCHA configuration, and enhances logging and error handling in TLD registry import processes. Also improves validation for user, domain, group, and profile inputs throughout the application.
The installer now prompts for and validates a custom admin username and email, updating migrations and SQL placeholders accordingly. Login now accepts either username or email, and the login form and installer views have been updated to reflect these changes. Additional logging and migration handling improvements were made for better installation and authentication workflows.
