feat(rust): event NPCs named on the map, and a Place NPCs step's progress line (runicnpc stage 8)

- rust.npc.place's progress() (MODULE_API 1.12.0, D304). It reports the
  step's NPCs still standing, by its key, of how many it placed, with
  the profile's label: "Bandit: 2 of 3 left". A boss step is its
  health, "Walk Juggernaut: 59%", and a boss's adds are not counted.
  The data comes from the map's live answer, so it costs the game no
  extra ask. A reader who may not see the map's events layer gets no
  line.
- The map (D302, D303):
  - an NPC's tooltip is its name and its event's title, read from
    core's public calendar, which lists only announced events;
  - a boss is bigger and in its own colour, and an add says so;
  - a boss outside any event is in the world layer;
  - a boss's health is removed from what a viewer is sent.
- The world layer's visibility hint mentions those bosses.

coreApi stays ^1.11.0: an older core ignores the optional member, and
the action works without a progress line.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01E14m6SuuY6i1vASFeGDBeY

client/src/routes/admin/Visibility.jsx

@@ -380,7 +380,7 @@ const selectStyle = {
 // ── The live map (phase 14) ───────────────────────────────────────────────
 
 const MAP_LAYERS = [
-  { id: 'world', label: 'Monuments & world events', hint: 'Cargo, helicopters, Bradley, supply drops, locked crates.' },
+  { id: 'world', label: 'Monuments & world events', hint: 'Cargo, helicopters, Bradley, supply drops, locked crates, and RunicNPC bosses placed outside an event.' },
   { id: 'events', label: 'Site events', hint: 'The zones, crates and NPCs this site’s events placed, while they run.' },
   { id: 'players', label: 'Players', hint: 'Where everybody is, with names, and the sleepers.' },
   { id: 'bases', label: 'Bases', hint: 'Tool cupboards and vending machines, as positions only.' },