Codebase-derived research for Phase 1 (FED-01..06): identifies an
unlocked concurrent read-modify-write race on federation/nodes.json
as the likely root cause of nodes reappearing after removal, flags
two stale CONCERNS.md claims already fixed on main (01cbec27), maps
remaining mesh demo-parity gaps (contacts-list/save, reaction/edit/
delete stubs) beyond the already-shipped attachment-send parity fix
(c2ce71c6), and scopes the greenfield Lightning-URI/channel-open
surface needed for FED-05.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>