feat(rust): Guarded Crate — feed, map, Warden, Place a guarded crate (PLAN_REDESIGNS §14.3.5)

Stage 6 of the §14.3 integration plan, on protocol 14. Spec: docs
rust-link/PROTOCOL.md §20.9.

- gc.started and gc.ended public, gc.failed staff's; guardedCrate.js reads
  each row per viewer (the clearer's name for the presence audience, Steam id,
  position and key for staff, `won` for everyone).
- Triggers rust.gc.started and rust.gc.ended (a crate a player cleared only).
- The step rust.gc.place: an event from rust.options.gc_events and a world
  call's location; refused at verify for Guarded Crate absent, NpcSpawn missing
  (D364), console unavailable, or an unknown event. Kept (D373); the run log's
  success line says so (D380). Budget rust.gc.crates.
- Warden (D375): guarded_won, title category guardedwon, Crates cleared column.
- Map marker, server settings line, swagger, engagement manifest, bundle, README.

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

client/src/routes/admin/ChatTitles.jsx

@@ -264,7 +264,29 @@ export function integrationsLine(r) {
   const withBackpacks = r.integrations.backpacks ? `${withEconomics} ${backpacksLine(r.integrations.backpacks)}` : withEconomics
   const withTruePve = r.integrations.truePve ? `${withBackpacks} ${truePveLine(r.integrations.truePve)}` : withBackpacks
   const withDynamicPvp = r.integrations.dynamicPvp ? `${withTruePve} ${dynamicPvpLine(r.integrations.dynamicPvp)}` : withTruePve
-  return r.integrations.dangerousTreasures ? `${withDynamicPvp} ${dangerousTreasuresLine(r.integrations.dangerousTreasures, r.console)}` : withDynamicPvp
+  const withDt = r.integrations.dangerousTreasures ? `${withDynamicPvp} ${dangerousTreasuresLine(r.integrations.dangerousTreasures, r.console)}` : withDynamicPvp
+  return r.integrations.guardedCrate ? `${withDt} ${guardedCrateLine(r.integrations.guardedCrate, r.console)}` : withDt
+}
+
+/**
+ * Guarded Crate (PLAN_REDESIGNS §14.3.5), from protocol 14, with NpcSpawn beside it
+ * (D364): its crates on the feed and the map, and whether a step can place one,
+ * which needs NpcSpawn for the guards and the framework to run its console command.
+ */
+export function guardedCrateLine(gc, probe) {
+  const npc = gc.npcSpawn && gc.npcSpawn.loaded ? `NpcSpawn ${gc.npcSpawn.version || ''}`.trim() : null
+  if (!gc.loaded) {
+    return `Guarded Crate is not loaded — a step cannot place a guarded crate.${npc ? ` ${npc} is loaded.` : ''}`
+  }
+  const name = `Guarded Crate ${gc.version || ''}`.trim()
+  const events = Array.isArray(gc.events) && gc.events.length ? ` Its events: ${gc.events.join(', ')}.` : ''
+  if (!npc) {
+    return `${name} is loaded but NpcSpawn is missing: its events cannot start, and a step cannot place one.`
+  }
+  if (probe && probe.plugins === false) {
+    return `${name} is loaded with ${npc} — its crates show on the feed and the map, but this framework cannot run its console command, so a step cannot place one (Rust-Plugins#34).${events}`
+  }
+  return `${name} is loaded with ${npc} — its crates show on the feed and the map, and a step may place one.${events}`
 }
 
 /**