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/worldEvents.test.js

@@ -415,6 +415,17 @@ test('a refusal the plugin would repeat is not retried; a game that is down is',
   assert.match(down.error, /has no game connected/)
 })
 
+test('a Travelling Vendor already out is no failure: the step says so and counts nothing called (W3)', async (t) => {
+  stubCall(t, ok({ kind: 'world.error', reason: 'already-out', message: 'a Travelling Vendor is already out' }))
+  const result = await callStep().perform({ runId: 7, idempotencyKey: '7:6', params: { server: 'main', event: 'travelling_vendor' } })
+  assert.strictEqual(result.ok, true)
+  assert.deepStrictEqual(result.detail, {
+    event: 'travelling_vendor',
+    called: 0,
+    note: 'a Travelling Vendor is already out on Main, and the game runs one at a time; nothing new was called',
+  })
+})
+
 test('a repeat of a key says so and calls nothing new', async (t) => {
   stubCall(t, ok({ kind: 'world.called', called: 1, repeat: true }))
   const result = await callStep().perform({ runId: 7, idempotencyKey: '7:5', params: { server: 'main', event: 'patrol_heli' } })