c393eab17d
Introduces the plumbing layer for Phase 3: GameStateResource wraps solitaire_core::GameState, DragState tracks in-progress drags, and SyncStatusResource holds runtime sync status. GamePlugin routes Draw/Move/Undo/NewGame request events into GameState and emits StateChangedEvent and GameWonEvent for downstream systems. Also adds the Phase 3 implementation plan under docs/superpowers/plans/. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>