# Changelog

## 0.3.0 - 2026-09-28

First public release under MIT.

- `slaReport()` computes availability over a half-open window, charges
  downtime per failing sample capped at one probe interval, and excludes
  scheduled maintenance.
- Zero samples gives `uptime_pct: null`, never 100. No target gives
  `met: null`, never a pass or a failure.
- `toReport()` and `formatSla()` produce an `@extant2000/evidence-record`
  report. Zero samples with a target is not assessed, not a missed SLA.
- `describeAvailability()` and `describeTarget()` put the null cases into
  plain sentences.