fix: constrain sandbox metrics charts#7
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背景
sandbox metrics使用asciigraph默认宽度渲染图表,图表宽度会随着采样点数量增长。在窄终端或持续监控场景下容易发生横向溢出,时间轴标签也可能重叠,影响可读性。变更内容
n/a。影响范围
sandbox metrics的图表模式和--watch展示。--raw原始 JSON 输出行为保持不变。验证
cmd/sandbox/metrics_test.go测试覆盖核心格式化逻辑。