session-metrics
session-metrics records measurements in append-only Session logs and retrieves them
through dedicated read/export paths. It handles measurement types and Segment lineage;
callers choose what to measure and calculate charges. Measurements are not exposed in
ordinary conversation snapshots.
Design entry points
- [
Metric]: missing values and correlation with later measurements - [
LocatedMetric]: storage locations and compaction lineage - [
read_session_metrics]: read boundary for aggregation across Segments