* feat: add DB-coordinated graceful restart staggering for settings changes Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix: preserve original instance names in restart coordination record Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * refactor: remove randomness, add drain delay for in-flight requests Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix: spawn restart in background, deduplicate entries, clarify stale filter Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>