One RunicNpc_List per map.live ask, joined to the ledger by net id
(D302, D303):
- A ledgered NPC's row gains its name and the step key that placed it.
A boss's row also gains `boss` and its `health` (0-1); the health is
for the event page's progress line.
- A RunicNPC NPC owned by a run that no step ledgered is a boss's add.
It joins the events layer under that run with `add: true`.
- Any other boss joins the world layer as `kind: "boss"` with its name.
- A placement's ordinary NPCs are not sent.
Protocol 13, still unreleased; the fields are additive.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01E14m6SuuY6i1vASFeGDBeY
