Witch on the Holy Night Visual-Novel theme for DeepSeek Harness

AvalonskyAfar/MahoutsukaiNoYoru-DSH-Skin: Witch on the Holy Night theme for the DeepSeek Harness Web UI - full-screen visual-novel skin with original-style menus, three characters with sprites and expressions, day/night BGM, and an ending sequence. 《魔法使之夜》DSH 皮肤。