review-copy

Review and fix user-facing copy against termio's voice guide (VOICE.md), scoring each pass and iterating until it holds. Covers UI strings, landing site, docs, release notes, and PR or issue text. Use when the user says 'review this copy', 'does this sound like us', 'check the wording', 'audit the settings text', 'fix this copy', '这段文案看一下', '读起来像不像我们写的', '改改措辞'.