Anthropic adds mods to Claude Code, Command flags obsolete Opus 5.5 instructions, Shell permissions fixed terminal freeze bugs

Your daily Claude Code briefing. What shipped, what changed, and what it means for the things you are building. Edition date: 2026-10-05 Chapters: 00:00 Anthropic adds mods to Claude Code, letting you change how it behaves and looks with add-on code 01:07 Claude Code command flags old instructions that Opus 5.5 no longer needs 02:08 Claude Code 2.1.289 closes gaps in shell permission rules and fixes terminal freezes 03:12 Claude Code Projects gives each request its own agent, and the main chat defaults to Low effort 03:58 Claude Code 2.1.288 lets mods read selected text and restores prompts cleared with Ctrl+C Claude Code Review · claudecodereview.ai