generate in detail introduction for my revirew artical on Defense-Associated Reverse Transcriptase 7 (DRT7): Structure, Mechanisms, Evolution, and Biotechnological Applications in Bacterial Anti-Phage Immunity 1. Introduction 1.1 The evolutionary arms race between bacteria and phages 1.2 Overview of prokaryotic anti-phage defense systems (Abi, CBASS, CRISPR, retrons) 1.3 Discovery and classification of Defense-Associated Reverse Transcriptases (DRT1–DRT9) 1.4 DRT7 as a member of the UG10 subgroup within Class 1 Abi/UG RTs 1.5 Scope and objectives of this review with citatio and references