Release v19: Cured 'Empty Think' poisoning and logic traps, enabled chronological reasoning preservation by default

Release v18: Improved error detection, engine compatibility, and whitespace normalization

Archive v17 template and readme

v17 release: Unified template, 100% KV Cache hit rate optimization, and Stopping Bug fix

Make update history collapsible in README

Initial upload: Qwen-Fixed-Chat-Templates