SSH Dashboard 2.1.5

Host deletion fix: the host checkboxes are interactive again, and a highlighted known_hosts row can be removed with Delete without ticking a box. Included config blocks can no longer be accidental delete targets.

macOS universal DMG, Windows portable ZIP, Linux tar.gz and SHA-256 checksums. The Windows installer for 2.1.5 is built manually from Actions → windows-installer and attached here.