Implements the K8s-native Go API service per the plan architecture:
- HTTP server with graceful shutdown and env-var configuration
- PostgreSQL schema (bots, matches, match_participants, jobs, rating_history)
- Health/ready endpoints checking PostgreSQL and Valkey connectivity
- Bot registration with health check, HMAC secret gen, AES-256-GCM encryption
- Key rotation and bot status endpoints
- Job claim via Valkey BRPOP, result submission with Glicko-2 rating update
- Glicko-2 rating system: multi-player pairwise, Illinois volatility algorithm
- Background tickers: matchmaker (1m), health checker (15m), stale job reaper (5m)
- Worker API key authentication (Bearer/X-API-Key)
- Dockerfile, K8s Deployment (2 replicas), ClusterIP Service
- 30 unit tests covering Glicko-2, crypto, config, and handlers
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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