feat: Implement draft and game phases with client views, dedicated managers, and server-side card image caching.

docs/development/devlog/2025-12-14-220000_game_interactions.md

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+# Game Interactions Implementation
+
+## Objective
+Implement basic player interactions for the MTG game, including library, battlefield, and other game mechanics.
+
+## Changes
+1.  **Backend (`src/server/managers/GameManager.ts`)**:
+    *   Created `GameManager` class to handle game state.
+    *   Defined `GameState`, `PlayerState`, `CardInstance` interfaces.
+    *   Implemented `createGame`, `handleAction` (move, tap, draw, life).
+    *   Integrated with `socket.io` handlers in `server/index.ts`.
+
+2.  **Frontend (`src/client/src/modules/game`)**:
+    *   Created `GameView.tsx`: Main game board with drag-and-drop zones (Hand, Battlefield, Library, Graveyard).
+    *   Created `CardComponent.tsx`: Draggable card UI with tap state.
+    *   Updated `GameRoom.tsx`: Added game state handling and "Start Game (Test)" functionality.
+
+3.  **Socket Service**:
+    *   Identify `start_game` and `game_action` events.
+    *   Listen for `game_update` to sync state.
+
+## Status
+-   Basic sandbox gameplay is operational.
+-   Players can move cards between zones freely (DnD).
+-   Tap/Untap and Life counters implemented.
+-   Test deck (Mountain/Bolt) provided for quick testing.
+
+## Next Steps
+-   Implement actual rules enforcement (Stack, Priority).
+-   Implement Deck Builder / Draft Integration (load actual drafted decks).
+-   Improve UI/UX (animations, better card layout).