**Mistral Medium 3.5** with reasoning support now available, plus fixes for missing sessions, instruction precedence, and long-running tool memory leaks.
Rust toolchain updated to 0.126.0.
Compact todo cards now display when checking off items in long lists, and `apply_patch` diffs appear in permission prompts before approval.
ACP clients can now list and switch between custom agents via the **agent config** option.
**Panel Layout** switcher lets you toggle between classic and agentic layouts, while **DeepSeek V4-Pro/Flash** and **OpenCode Go** join the supported models.
**Claude Code** adds `ANTHROPIC_BEDROCK_SERVICE_TIER` environment variable to switch Bedrock tiers and enables `/resume` to find sessions by pasted PR URL.