Add copy functionality to improve UX when working with code: - Code blocks: pill-style "Copy" button appears on hover (top-right) - File paths in Edit/Read/Write tools: icon button on hover - Long inline code (>40 chars): small icon button on hover Uses Clipboard API with visual feedback (green checkmark on success). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>