- Updated AGENTS.md to clarify player interface bindings and agent account restrictions.
- Improved PlayerAuthLoginController to include captcha verification for player login.
- Enhanced AdminPlayerIndexController with permission checks for admin users.
- Refactored AdminPlayerStoreController to enforce agent node restrictions for non-super admins.
- Introduced new error codes for player authentication failures and updated related services.
- Enhanced validation rules for agent profiles to include settlement cycle options.
- Improved AdminCaptchaService to support separate scopes for admin and player captcha handling.
- Updated various services to ensure proper credit management and settlement processes.
- Changed super admin detection from role-based to `is_super_admin` flag in AdminUser model
- Added `requireDefaultAdminSiteId()` method to throw validation error when no integration site exists
- Enhanced site deletion to migrate platform role bindings to fallback site and auto-delete site-specific admin accounts
- Made agent line code optional with auto-generation fallback using `{site_code}-agent-{counter}` format
