Create 16 integration tests across 7 test classes covering:
- JWT authentication (valid/invalid/expired tokens)
- Game join flow with Redis connection tracking
- Action execution and state broadcasting
- Turn timeout Redis operations (start/get/cancel/extend)
- Disconnection cleanup
- Spectator filtered state
- Reconnection tracking
Uses testcontainers for real Redis/Postgres integration. Completes
Phase 4 (Game Service + WebSocket) with all 18 tasks finished.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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