Boss Arena

Initial Release (v1.0.0)
• Added configurable boss encounters with tiering, stat modifiers, and optional add-wave mechanics.
• Added arena system for creating, listing, and deleting fixed boss fight locations.
• Added boss spawning controls for admins (/bossarena spawn <bossId> <arenaId|here>).
• Added shop guard NPC system so players can open BossArena contracts via normal interaction.
• Added per-location shop filtering to enable/disable specific boss contracts by shop position.
• Added per-player loot chest rewards so each participant gets their own encounter rewards.
• Added persistent loot chest recovery (loot_chests_state.json) so rewards survive restarts.
• Added optional economy support for HyMarketPlus and EconomySystem, with automatic item-currency fallback.
• Added admin configuration UI (/ba config) for Bosses, Shop, and Arenas.
• Added runtime JSON config files for bosses, arenas, loot tables, shop settings, and global currency options.
• Added permission-gated admin command set (bossarena.admin) with /bossarena and /ba namespaces.
• Added standalone compatibility targeting server build 2026.02.19-1a311a592 (no required dependencies).