feat: simple reasoning integration

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

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

fix: move npc badges up

Refactor action handling and update UI elements

feat: Visual improvements & reduce attack range

Refactor NPC roles and enhance survival mechanics

Enhance NPC communication and memory system

Refactor frontend panels and default to vLLM

Add Modal LLM backends and agent memory updates

Initial god simulator foundation