DATABASE_URL=mysql://user:password@localhost:3306/database

# 必填：外部 SoH 预测服务地址
SOH_PREDICTION_API_BASE_URL=http://127.0.0.1:8000
# SOH_PREDICTION_CACHE_TTL_SECONDS=86400
# SOH_PREDICTION_TIMEOUT_MS=10000

# 可选：日志级别与输出格式
# LOG_LEVEL=info       # trace|debug|info|warning|error|fatal
# LOG_FORMAT=pretty    # pretty|json — defaults to TTY ? pretty : json
# LOG_DB=false         # reserved for database query logging if enabled later