Inventory Swap Gym Mod

• Adds the /gym spawn command (usable by players) which finds a spot ~8 blocks ahead of the caller, clears space, and assembles a Pokémon-style gym block by block with a randomly selected palette (Cascade/Ember/Tide).
• Each gym includes patterned floors, glass walls, lantern-ringed roof, entrance path, and interior columns; construction is paced over several seconds instead of appearing instantly.
• When construction finishes, a themed gym trainer armor stand appears at the center; interacting with them triggers a short battle encounter that spawns a few buffed mobs representing the trainer’s team and targets the challenger.
• Approaching a gym within about 12 blocks plays bell cues, sprays particles, and shows an action bar hint so the structure feels alive even before interacting.
• Multiple gyms can be created; each tracks its trainer spawn and uses cooldowns to reduce interaction spam while still allowing repeat battles.

Known limits / tips

• Battles use vanilla mobs rather than true Pokémon; spawned opponents persist until defeated.
• Gyms overwrite blocks within their footprint (about a 15×15 area and up to ~7 blocks high) to guarantee a clear arena.
• Tuning build speed, particle density, or palettes can be done via the constants in GymManager/GymStructure if you want a slower or flashier presentation.

Server Validation

✅ Server validation passed - The mod was tested on a real Minecraft server and loaded successfully.