fix(rust): protocol 13 step 2 — expiry, plugin loads, the loading hold, NPC names, the link fleet (F2 F5 F6 F7 F8 F13 F14)

The module's half of PLAN_FIXES §6 step 2 (decisions D181-D185, docs#288).

- F13/F14 (D170, D183): `world.expired`, recognisable from protocol 13 by its
  `what`, is handed to core as the resource the zone step ledgered
  (`world`, `<serverId>:<id>`) through ctx.events.expired, which records it
  `expired`. coreApi moves to ^1.11.0 (website#209).
- F8 (D184): `plugin.loaded` / `plugin.unloaded` mark the permission sync dirty
  when the plugin added or removed permissions, so an unresolved grant lands on
  the next tick instead of the fifteen-minute audit.
- Catalogue: plugin.loaded/unloaded, world.expired and lease.expired are staff
  kinds. The last two were never classified (default deny kept them off public
  pages); the test now covers every event kind through protocol 13.
- F7: permission and title pushes hold while the stored hello says
  `worldReady: false` (a human's "sync now" does not); a failed or refused
  permission sync now logs at warn.
- F2 (D185): the killfeed names an NPC attacker — a family (Scientist, Bandit
  guard, Bradley APC…) or the prefab without its variant digits (wolf2 → Wolf).
- F5/F6: a link code is asked of the servers that minted one in the last six
  minutes first, then of the rest, each group in parallel; "unsure" only when
  one of the minting servers is unreachable.
- D182: the admin server list carries the ZoneManager helper's state from the
  hello, and the servers page says what a missing or failed helper costs.

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

swagger-fragment.json

@@ -2744,6 +2744,79 @@
                   }
                 }
               },
+              "zoneHelper": {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "example": "object"
+                  },
+                  "nullable": {
+                    "type": "boolean",
+                    "example": true
+                  },
+                  "description": {
+                    "type": "string",
+                    "example": "The ZoneManager helper the game reported at hello (protocol 13, PLAN_FIXES D182). `patched` means ZoneManager counts a player already standing in a zone when it is created or restored. `missing`, `unsupported` or `no-zonemanager` mean it does not: the bridge scores its zones by position instead, and the flags ZoneManager applies miss that player. Null when the plugin reported none."
+                  },
+                  "properties": {
+                    "type": "object",
+                    "properties": {
+                      "state": {
+                        "type": "object",
+                        "properties": {
+                          "type": {
+                            "type": "string",
+                            "example": "string"
+                          },
+                          "enum": {
+                            "type": "array",
+                            "example": [
+                              "patched",
+                              "unsupported",
+                              "missing",
+                              "no-zonemanager"
+                            ],
+                            "items": {
+                              "type": "string"
+                            }
+                          },
+                          "example": {
+                            "type": "string",
+                            "example": "patched"
+                          }
+                        }
+                      },
+                      "version": {
+                        "type": "object",
+                        "properties": {
+                          "type": {
+                            "type": "string",
+                            "example": "string"
+                          },
+                          "example": {
+                            "type": "string",
+                            "example": "0.1.0"
+                          }
+                        }
+                      },
+                      "reason": {
+                        "type": "object",
+                        "properties": {
+                          "type": {
+                            "type": "string",
+                            "example": "string"
+                          },
+                          "example": {
+                            "type": "string",
+                            "example": "this ZoneManager (3.2.0) has no Zone.InitializeZone"
+                          }
+                        }
+                      }
+                    }
+                  }
+                }
+              },
               "online": {
                 "type": "object",
                 "properties": {