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

swagger-fragment.json

@@ -2387,7 +2387,7 @@
             }
           },
           "409": {
-            "description": "Economics is not installed there, or the balance is too low to withdraw that much",
+            "description": "Economics is not installed there, the balance is too low to withdraw that much, or a deposit would pass Economics’ balance limit",
             "content": {
               "application/json": {
                 "schema": {
@@ -8257,6 +8257,23 @@
                   }
                 }
               },
+              "waitingToLand": {
+                "type": "object",
+                "properties": {
+                  "type": {
+                    "type": "string",
+                    "example": "integer"
+                  },
+                  "description": {
+                    "type": "string",
+                    "example": "Grants to players (lent, given or authored) the last sync pushed and the game did not keep: the report’s `notLanded` entries for a Steam id. On Carbon that is a player the server has never seen; the grant lands when they first join, because every sync pushes the whole set."
+                  },
+                  "example": {
+                    "type": "number",
+                    "example": 0
+                  }
+                }
+              },
               "dirty": {
                 "type": "object",
                 "properties": {