fix(rust): the last fixes' small ones (W3 W6 W7/W11 W8 W10 W13-W18)

Stage 2 of PLAN_LAST_FIXES (docs#366).

- W7/W11: an "is it loaded" refusal is confirmed live before it is given.
  New liveStatus.js asks the sidecar once (boot.refreshOne, as a poll tick
  would), at most once per server per 5 s and waiting at most 3 s, then
  reads the stored status again. Used by Economics (step and staff page),
  Backpacks, Dangerous Treasures, Guarded Crate, RaidableBases, ZoneDomes,
  TruePVE and RunicNPC.
- W3: a world call answered `already-out` (the bridge half comes in stage
  3) succeeds as called 0, saying a Travelling Vendor is already out.
- W6: "A locked crate dropped by a Chinook is being hacked."
- W8: a RaidableBases profile's audit row names RaidableBases, not "@data".
- W10: the backpack sizes picker lists each size once, naming its servers.
- W13: a RaidableBases name both servers describe differently shows each
  server's own description.
- W14: each RaidableBases note after the first starts its own sentence.
- W15: a staff deposit refused at Economics' limit answers 409.
- W16: a payment's failedNote explains only the reasons that happened.
- W17: the sync state counts player grants that did not land
  (waitingToLand), and the Permissions page says "in sync · 1 waits for
  their player to join" instead of plain "in sync".
- W18: Guarded Crate's kept note drops the "30 minutes" it could not know.

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

server/test/backpacks.test.js

@@ -34,6 +34,10 @@ function withRecorder(rows = []) {
 
 withRecorder()
 
+// The stored status is the whole answer in these tests: nothing asks a
+// sidecar before a refusal (W7, W11). liveStatus.test.js covers the ask.
+require('../liveStatus').refresh = async () => false
+
 const client = require('../sidecarClient')
 const serversDb = require('../model/servers/servers.db')
 const servers = require('../model/servers/servers.model')
@@ -194,16 +198,21 @@ test('the revert deletes the step’s rows, and the next sync takes the size bac
   assert.deepStrictEqual(calls.dirty, ['main'])
 })
 
-test('the size list offers each server’s sizes above its smallest, grouped by server', async (t) => {
+test('the size list offers each size above a server’s smallest once, naming every server that offers it (W10)', async (t) => {
   const saved = { listForPolling: servers.listForPolling, reports: backpacksDb.reports }
   t.after(() => Object.assign(servers, { listForPolling: saved.listForPolling }) && Object.assign(backpacksDb, { reports: saved.reports }))
-  servers.listForPolling = async () => [{ id: 'main', name: 'Main' }, { id: 'pve', name: 'PvE' }]
+  servers.listForPolling = async () => [{ id: 'main', name: 'Main' }, { id: 'pve', name: 'PvE' }, { id: 'off', name: 'Off' }]
   backpacksDb.reports = async () => [
-    { serverId: 'main', backpacks: JSON.stringify({ loaded: true, sizes: [6, 48] }) },
-    { serverId: 'pve', backpacks: null },
+    { serverId: 'main', backpacks: JSON.stringify({ loaded: true, sizes: [6, 48, 96] }) },
+    { serverId: 'pve', backpacks: JSON.stringify({ loaded: true, sizes: [12, 24, 48] }) },
+    { serverId: 'off', backpacks: null },
   ]
   const source = rewards.OPTION_SOURCES.find((s) => s.id === 'rust.options.backpacksizes')
-  assert.deepStrictEqual(await source.resolve(), [{ value: 48, label: '48 slots', group: 'Main' }])
+  assert.deepStrictEqual(await source.resolve(), [
+    { value: 24, label: '24 slots — PvE' },
+    { value: 48, label: '48 slots — Main, PvE' },
+    { value: 96, label: '96 slots — Main' },
+  ])
 })
 
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