Added example .env file

infrastructure/dev/.env.example

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+# Database
+POSTGRES_USER=knowfoolery
+POSTGRES_PASSWORD=change-me
+POSTGRES_HOST=localhost
+POSTGRES_PORT=5432
+POSTGRES_DB=knowfoolery
+
+# Redis
+REDIS_HOST=localhost
+REDIS_PORT=6379
+
+# Zitadel (when auth profile is enabled)
+ZITADEL_URL=http://localhost:8080
+ZITADEL_PROJECT_ID=your-project-id
+ZITADEL_CLIENT_ID=your-client-id
+ZITADEL_PORT=8084
+ZITADEL_MASTERKEY=replace-with-32-char-masterkey
+ZITADEL_ORG_NAME=knowfoolery
+ZITADEL_ADMIN_USERNAME=admin
+ZITADEL_ADMIN_PASSWORD=change-me
+
+# CockroachDB (for Zitadel)
+CRDB_PORT=26257
+CRDB_HTTP_PORT=9090
+
+# Environment
+ENVIRONMENT=development
+LOG_LEVEL=debug
+
+# Service Ports
+GAME_SESSION_PORT=8080
+QUESTION_BANK_PORT=8081
+USER_SERVICE_PORT=8082
+LEADERBOARD_PORT=8083
+ADMIN_SERVICE_PORT=8085
+GATEWAY_PORT=8086
+GATEWAY_INTERNAL_PORT=18086
+
+# Gateway
+GATEWAY_PUBLIC_PREFIX=/api/v1
+GATEWAY_ALLOWED_ORIGINS=http://localhost:5173
+GATEWAY_RATE_WINDOW=1m
+GATEWAY_RATE_GENERAL=100
+GATEWAY_RATE_AUTH=5
+GATEWAY_RATE_API=60
+GATEWAY_RATE_ADMIN=30
+
+# Observability ports (when observability profile is enabled)
+PROMETHEUS_PORT=9091
+GRAFANA_PORT=3000
+JAEGER_UI_PORT=16686
+JAEGER_COLLECTOR_PORT=14268
+JAEGER_AGENT_PORT=6831
+
+# Grafana (when observability profile is enabled)
+GRAFANA_ADMIN_USER=admin
+GRAFANA_ADMIN_PASSWORD=change-me