feat: Implement core game engine logic, high-velocity UX, and new UI components including radial menu, inspector overlay, and mulligan view.

docs/development/devlog/2024-12-18-220000_ux_and_engine_completion.md

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+# 2024-12-18 - High Velocity UX & Strict Engine Completion
+
+## Status: Completed
+
+We have successfully implemented the core strict rules engine features and the high-velocity UX components.
+
+### 1. Rules Engine Refinement
+- **State-Based Actions (SBAs)**: Implemented robust SBA loop in `RulesEngine.ts`, utilizing `processStateBasedActions()` to cyclically check conditions (Lethal Damage, Legend Rule, Aura Validity) and recalculate layers until stability.
+- **Layer System**: Implemented Layer 7 (Power/Toughness) calculations, handling Base P/T, Setting Effects, Boosts, and Counters.
+- **Mana Engine**: Backend support for manual mana pool management (emptying at end of steps).
+- **Code Cleanup**: Resolved critical linting errors and structural issues in `RulesEngine.ts` (duplicate methods, undefined checks).
+
+### 2. High-Velocity Frontend UX
+- **Inspector Overlay**: Created `InspectorOverlay.tsx` to visualize detailed card state (P/T modifications, counters, oracle text) with a modern, glassmorphism UI.
+- **Smart Button Advanced**: Implemented "Yield" toggle on the Smart Button. Users can long-press (simulated via pointer down) to yield priority until end of turn (or cancel).
+- **Radial Menu**: Created a generic `RadialMenu.tsx` component. Integrated it into the `GameView` via the Context Menu ("Add Mana...") to allow quick manual mana color selection for dual/utility lands.
+- **Context Menu Integration**: Added "Inspect Details" and "Add Mana..." options to the card context menu.
+
+### 3. Verification
+- **GameView Integration**: All new components (`InspectorOverlay`, `SmartButton`, `RadialMenu`) are fully integrated into `GameView.ts`.
+- **Type Safety**: Updated `types/game.ts` to ensure consistency between client and server (e.g., `attachedTo`, `ptModification` properties).
+
+## Next Steps
+- **Playtesting**: Validate the interaction between strict rules (timing, priority) and the new UX in a live multiplayer environment.
+- **Visual Polish**: Refine animations for Inspector and Radial Menu opening.
+- **Complex Card Logic**: Expand the engine to support more complex replacement effects and specific card scripts.