feat(rust): RunicNPC is required for every Place NPCs step (runicnpc stage 9, D310)

A Place NPCs step on a server without RunicNPC, or with one older than the
bridge needs, is refused before it is sent: "<server> needs RunicNPC to place
NPCs, Rust's own scientists included: <why>". Rust's own scientists were the
fallback until now (D243); they need RunicNPC too. Crates are unaffected.

- npcs.model: API_NEEDED rises from 4 to 6, the bridge's RunicNpcApiNeeded, so a
  server the site calls ready is one the bridge will not refuse as runicnpc-old.
  The profile push follows the same floor.
- eventWorld: profileMissing becomes npcMissing, asked for every NPC step.
- Admin → Rust → Servers: each server carries `runicNpc` ({ready, absence,
  version, api}) and a server without one that will do reads "Incomplete" with
  the reason. Swagger documents the field.

The event picker is unchanged in this commit (an open question on the PR).

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

server/eventWorld.js

@@ -116,7 +116,8 @@ const PERMANENT = new Set([
   // and a dome asked of a server without ZoneDomes or the domes helper.
   'bad-option',
   'dome-unavailable',
-  // runicnpc stage 4 (D243): a profile the server does not have, or no RunicNPC.
+  // runicnpc stage 4 (D243): a profile the server does not have, or no RunicNPC
+  // (since stage 9, D310, for every NPC step, Rust's own scientists included).
   'unknown-profile',
   'runicnpc-missing',
   // runicnpc stage 5 (D272): no zone of the run holds the point; a RunicNPC
@@ -538,8 +539,9 @@ function placeVerb({ id, kind, budget, max, label, description, source, example
       const found = await serverFor(where.serverId)
       if (!found.ok) return found
 
-      if (profile !== null) {
-        const missing = await profileMissing(found.server, profile)
+      // D310: every NPC needs RunicNPC on the server, Rust's own scientists included.
+      if (kind === 'npc') {
+        const missing = await npcMissing(found.server, profile)
         if (missing) return { ok: false, retry: false, error: missing }
       }
 
@@ -651,16 +653,19 @@ function npcOrders(params, server) {
 }
 
 /**
- * Why a profile cannot be placed on this server, from what the site knows, or
- * null (D243). A server without RunicNPC offers only Rust's own until stage 9;
- * a profile the site does not push there is not on it. What the server itself
- * holds is the plugin's to answer (`unknown-profile`).
+ * Why NPCs cannot be placed on this server, from what the site knows, or null.
+ * Since runicnpc stage 9 (D310) that is every Place NPCs step on a server
+ * without RunicNPC, or with one older than the bridge needs, Rust's own
+ * scientists included: the bridge refuses them the same way. `profile` is null
+ * for one of Rust's own; a profile the site does not push there is not on it.
+ * What the server itself holds is the plugin's to answer (`unknown-profile`).
  */
-async function profileMissing(server, profile) {
-  const [list, profiles] = await Promise.all([npcsDb.listNpcServers(), npcsDb.listProfiles()])
+async function npcMissing(server, profile) {
+  const [list, profiles] = await Promise.all([npcsDb.listNpcServers(), profile === null ? [] : npcsDb.listProfiles()])
   const here = list.find((s) => s.id === server.id)
   const name = server.name || server.id
-  if (!npcs.npcReady(here)) return `${name} cannot place the profile "${profile}": ${npcs.npcAbsence(here)}. Pick one of the server's own scientists.`
+  if (!npcs.npcReady(here)) return `${name} needs RunicNPC to place NPCs, Rust's own scientists included: ${npcs.npcAbsence(here)}`
+  if (profile === null) return null
   if (!profiles.some((p) => !p.replaced && p.name === profile && npcs.covers(p, server.id))) {
     return `the site has no NPC profile "${profile}" for ${name} (Admin → Rust NPC profiles)`
   }