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

server/model/titles/titles.js

@@ -22,7 +22,8 @@ const crypto = require('node:crypto')
  * The categories a rule may rank (PLAN_REDESIGNS §5, D172): the twenty-three
  * conditions and their shipped titles, the richest (§11.2.2, Magnate), the
  * two world-event counts (§14.3.1, Safecracker and Scavenger), Dangerous
- * Treasures won (§14.3.4, Treasure Hunter), plus
+ * Treasures won (§14.3.4, Treasure Hunter), guarded crates cleared (§14.3.5,
+ * Warden), plus
  * `playtime`, which predates them and has no default title, so a playtime rule
  * always carries its own text.
  *
@@ -72,6 +73,8 @@ const STATS = {
   dropslooted: { label: 'Airdrops looted first', title: 'Scavenger', source: { sum: 'drops_looted' } },
   // Protocol 14, Dangerous Treasures (D375): a chest counts for the player who emptied it.
   treasureswon: { label: 'Dangerous Treasures won', title: 'Treasure Hunter', source: { sum: 'treasures_won' } },
+  // Protocol 14, Guarded Crate (D375): a crate counts for the player who killed its last guard.
+  guardedwon: { label: 'Guarded crates cleared', title: 'Warden', source: { sum: 'guarded_won' } },
   richest: { label: 'Richest (Economics)', title: 'Magnate', source: { balance: 'balance' } },
   playtime: { label: 'Playtime', title: null, source: { sum: 'playtime_sec' } },
   profilekills: { label: 'Kills of an NPC profile', title: null, source: { npcProfile: true } },