Trims the user's own writing — commit messages, Slack posts, emails, reports, self-reviews, READMEs. Finds the padding and shows the shorter version. This edits text the user wrote, not your own answers. Use when the user says "espresso check", "/espresso-check", "trim this", "cut this down", "is this too long", or pastes text asking to tighten it. One-shot review, persists nothing.
