feat: enhance world interactions with Debt Receipt mechanics and improve shrine healing functionality

feat: enhance NPC dialogue and weapon tempering mechanics

feat: Update asset versioning and enhance monster tier system with display levels

Add tests for RPG-depth systems and update evolution logic for king status

Expand combat feedback and boss encounters

Add weapon pricing and story beats to enhance gameplay experience

Add Bone Market shop layout and update merchant transaction logic

Add admin controls for the RPG world

Verify toll handling and world quest-drop metadata

Add quest system unit tests

Cover dialogue persona, thinking-strip, and flag-safety behavior

Add boss choice and combat metadata

Add RPG progression smoke coverage

Expand RPG progression branches

Add RPG story and casting systems