Both blind judges flagged the same residual: without a detection
criterion, a /seo-dispatched subagent could misread itself as headless
and degrade to report-only. Unreachable = no answer obtainable at all
(cron/CI, user explicitly absent); orchestrator dispatch with a main
thread that can relay questions is reachable.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>