[FEAT] LiveTests :

- ProBuilder level-build live scenario (tests/live-probuilder-level.test.mjs, in npm run test:live): drives this server over real MCP stdio against a running editor and builds a level through the queue - shapes, extrude, boolean CSG (placement regression assert), face materials, combine, per-action undo, dense hierarchy, lazy discovery, agent attribution, protocol-clean stdout. Self-cleaning __mcp_lvl_ probes; skips ProBuilder steps when not installed. Found 3 real plugin bugs on first run (fixed in plugin 2.37.1); 15/15 green after

[FIX] ToolTiers, 12 core tools unreachable via unity_advanced_tool lazy proxy (derived route != real endpoint, e.g. unity_material_create -> asset/create-material, unity_execute_code -> editor/execute-code) : add ROUTE_OVERRIDES entries so the proxy works as a stale-schema escape hatch; protocol test proves the core-proxy path end-to-end (56 pass)
- Bump package 2.35.0 -> 2.35.1