SFTPGo Files

### New features

• Symbolic links: the new symlink_mode setting selects, per backend, whether clients holding the create_symlinks permission may create symbolic links on the local filesystem, the SFTP backend, or both. It is disabled by default. Creating a link requires create_symlinks on both the link's directory and the directory it points into, so per-directory permissions are enforced consistently on the path the client requests.
• OIDC redirect: the WebClient OIDC login now preserves a next redirect target across the IdP round-trip.

Bug fixes

• httpd: return after a CSRF failure in the web client login. The login POST handler rendered the CSRF error page but did not return, so execution fell through into the post-connect hook and the credential verification pipeline. Added the missing return to match the admin login, password reset, and setup handlers.

Hardening

• Improve symbolic links handling and add more test cases.
• httpd: clean and unify the WebClient post-login redirect target validation.