RPG Warehouse Storage

Added

• Core Persistent Storage: Implemented player-specific warehouse storage using an embedded H2 database engine.
• Slot-Locking API: Introduced IWarehouseAPI with support for checking and locking slots when items are listed in the Auction House or placed in Marketplace Player Shops. Locked slots display a padlock overlay (🔒) and block all standard player inventory interaction.
• Currency Management System: Added configurable currency definitions and groups (e.g. c for copper/base, m for magic, e for engineering) managed via /rpg_warehouse admin currency commands.
• Client-Side Pricing Cache: Added weighted average price computations from transaction histories with real-time syncing to client screens.
• Average Price Tooltips: Added tooltip additions displaying average market prices per item and per stack on all hovered warehouse/inventory items.
• Admin Commands: Added /rpg_warehouse command hierarchy for checking, backing up, restoring player warehouses, and managing currency lists.

Fixed

• H2 Dependency Clash: Converted subproject database dependencies to compile-only, resolving ResolutionException issues on startup where multiple subprojects exported colliding H2 packages.
• Tab Syncing: Resolved a critical tab switching issue where client tab clicks inside dependent screens (Auction House and Marketplace) failed to reload database slots on the server due to container caching.
• Inbox Claim Erasure: Fixed slot update caching to trigger container-refresh reflection whenever inbox items are claimed, ensuring database updates aren't overwritten upon container exit.