serve(runtime) listens first, writes the state root only once the runtime
holds it, answers Idunn's route challenge ahead of the cross-site refusal,
and fences on lease loss. --health is deleted; the pid file and /proc
reclaim move behind the hand-run runtime. Adds scripts/idunn-entry.mjs,
the kimodo and SOMA-X gitlinks, encode_texts for the child, and tests.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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