v5.51.1

What's Changed

• AFK mode: let an away operator actually go AFK (elicitation fixes + Telegram-native host v1) by @griffinwork40 in #608
• fix(subagent): env-configurable timeout + raise default to 45m; observable forked children by @griffinwork40 in #610

Full Changelog: v5.51.0...v5.51.1