0.21.1 - 2026-09-23

• Queue Transition Reliability: Advances the exact Telegram pin to 0.51.1. Busy /next now reports the interrupted turn and exact selected queued prompt in order, preserves one reply-header owner through agent start, keeps rapid ordinary messages separate, and lets /abort or /stop cancel stale notices without allowing notice failures to block dispatch.
• Follower Heartbeat Stability: Uses a dedicated eight-second follower heartbeat response deadline aligned with leader stale-liveness policy, preventing ordinary multi-second Pi/TUI event-loop stalls from destroying a healthy socket, producing leader EPIPE noise, or cycling registration status.
• Package Cohort: Keeps every other bundled package at its current exact version. Package membership, resource paths, load order, Pi minimum, and bundled Skill ownership remain unchanged.