pack: v0.41.2 — rename Counting House to Exchange + fix click-refresh bug

bnstoolkit 0.8.1 -> 0.8.2.

Counting House -> Exchange (more intuitive naming).
- /bns open counthouse -> /bns open exchange
- screen title shown as "Exchange"
- Lang + docs updated

Click-doesn't-refresh-detail bug: ItemCell / BountyRow / PlotRow now
call getGui().refreshWidgets() after updating their static `selected`
field, so the detail sub-panel re-renders with the new selection.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

pack/pack.lock.json

@@ -1,13 +1,13 @@
 {
   "$schema": "Brass-and-Sigil pack.lock.json - generated, do not edit by hand unless you know what you are doing",
   "name": "Brass and Sigil",
-  "version": "0.41.1",
+  "version": "0.41.2",
   "minecraft": "1.21.1",
   "loader": {
     "type": "neoforge",
     "version": "21.1.228"
   },
-  "lockedAt": "2026-06-08T18:14:17Z",
+  "lockedAt": "2026-06-08T18:22:06Z",
   "mods": [
     {
       "source": "modrinth",