feat: disable model selector & autoplay tick by default

feat: implement NPC model switching and admin API for model management

Refactor action handling and update UI elements

Merge branch 'main' of https://github.com/DeltaZN/god_simulator

aboba improvement

Add initial MCP contract & gradio select screen

feat: Visual improvements & reduce attack range

Merge branch 'testing' into main: Overseer vs Chaos gameplay on the primitives engine

Refactor NPC roles and enhance survival mechanics

updated textures & refactor logic

Refactor frontend panels and default to vLLM