Speed figures are published only from live measurements

The speed page, the guides, the website, llms.txt and the MCP server's instructions no longer quote the sandbox timings measured in September 2026. The speed page now lists only operations measured by the outside probe each minute whose own time is within 2× of their physical floor, with p50, p95, p99, sample counts and the raw samples. The disk, network and trace overhead measurements moved to observability.