Add 18 new MCP tools to the embedded McpServer so agents can drive
the live game beyond the debugger surface:
- scene/entity query + transform mutation
- procgen recipe enumeration, map grid generation, mesh build
- 2D physics world create/list/raycast/remove
- render status + frame screenshot (PNG)
- particle emitter spawn, audio master control
Tool handlers use ModuleManager to reach Scene/Procgen/Physics/
Graphics/Particles/Audio and degrade gracefully when a module is
not mounted. Extend the tools/list and unit-test coverage.
西风逍遥游
090283a743