RaywareNative (RWC 3.0) XState machine conventions: parallel-machine shadowing, live-read guards (no mirrors), event mounting levels and swallow interception, panel-machine gating-signal same-source, and the design questions to ask before changing a machine. Use when editing or reviewing interactionSystem.machine.ts or other XState machines in the RaywareNative repo — adding states/transitions/events/guards, wiring deps, or reviewing machine diffs. NOT for generic XState usage (xstate-interactions) or the Sketch paste/regeneration workflow (xstate-studio-sync-workflow).