chore: add games folder structure to monorepo

- Create /games directory for game projects
- Update pnpm-workspace.yaml with games paths
- Update CLAUDE.md documentation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

CLAUDE.md

@@ -56,7 +56,7 @@ Each project has its own `CLAUDE.md` with detailed project-specific commands.
 ### Monorepo Structure
 ```
 manacore-monorepo/
-├── apps/                    # All product applications
+├── apps/                    # SaaS product applications
 │   ├── chat/
 │   │   ├── apps/
 │   │   │   ├── backend/     # NestJS API
@@ -67,6 +67,8 @@ manacore-monorepo/
 │   ├── maerchenzauber/
 │   ├── manadeck/
 │   └── ...
+├── games/                   # Game projects
+│   └── {game-name}/         # Individual games
 ├── services/                # Standalone microservices
 │   └── mana-core-auth/      # Central authentication service
 ├── packages/                # Monorepo-wide shared packages

pnpm-workspace.yaml

@@ -8,6 +8,15 @@ packages:
   # Product-specific packages
   - 'apps/*/packages/*'
 
+  # Games
+  - 'games/*'
+
+  # Sub-apps within games (if needed)
+  - 'games/*/apps/*'
+
+  # Game-specific packages
+  - 'games/*/packages/*'
+
   # Standalone microservices
   - 'services/*'