Chord: README rewritten for the new runtime; notes.md and requests.md removed, their open limits and
decisions folded into spec.md section 12; guide and spec status lines updated. Durable: drops the
pico-v5 handoff and delta findings, renames the Pico spec, and uses current Chord terms. Delta README,
issue categories, and PI_RADIUS_GATEWAY updated.
Syncs issues with gh, triages new ones with a pi-durable agent (category, duplicates, summary, p0/p1/none suggestion), and serves a web UI for decisions.
