Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Regex/stdlib passes (dedupe, alias, ANSI/timestamp/blob strip, JSON minify, caveman word-drop) measured at 8.9-12.2x on real logs with o200k counts. Optional LLMLingua-2 wrap. grunts.py mines Claude Code transcripts for retyped prompts -> slash-command stubs. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>