0.6.0: Counting House refactor — bank-credited wealth exchange

Major economic-design pivot per design conversation:

* Bazaar renamed to "Counting House" — wealth exchange, not general shop
* Players bring wealth-tokens (diamond, netherite_ingot, ancient_debris,
  diamond_block); transactions credit their Numismatics bank account
  directly (not inventory)
* SellCatalogue cut from 9 items to 4; iron/gold/coal/lapis/redstone/
  emerald removed (those belong on player-run Numismatics Vendor blocks)
* Diminishing-returns floor tightened 50% -> 30% so deep-grinders feel
  the friction

Numismatics integration via reflection (NumismaticsBridge):
* Auto-creates personal bank account on PlayerLoggedInEvent
* SpurBalance.totalSpurs() now sums inventory coins + bank balance
* TierStateUpdatePacket carries cashOnHand + bankBalance separately so
  the hub can break them out
* HUD overlay shows three lines: tier / cash / bank — no card lookup,
  always shows total wealth regardless of what's on the player
* /bns sell handled in Java (CountingHouseCommands); KubeJS 02_sell_
  shop.js retired to .retired
* /bns wallet (+ deposit/withdraw) for managing cash<->bank flow
* Wire-version bumped 0.4 -> 0.5

Hub becomes status-only:
* Removed Civic Tier / Bazaar / Bounty / Plot transactional buttons
* Kept Quest Log, Refresh, Close
* Status panel shows tier, cash on hand, bank balance, total wealth,
  fee%, plot slots, bounty slots
* Footer: "Visit spawn NPCs for trades, bounties, plots, tier upgrades"

Screen rename: ShopBrowserScreen -> CountingHouseScreen.
OpenScreenDispatcher accepts both "counthouse" and "shop" keys
(latter as backward-compat alias).

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

gradle.properties

@@ -19,5 +19,5 @@ loader_version_range=[1,)
 mod_id=bnstoolkit
 mod_name=Brass and Sigil Toolkit
 mod_license=All Rights Reserved
-mod_version=0.5.1
+mod_version=0.6.0
 mod_group_id=uk.sijbers.bnstoolkit