0.18.4

[0.18.4] - 2026-06-16

Added

• custom metrics: applications.custom_stale_after to tune how long a group
  keeps reporting after its producer stops (default: a few collection intervals)

Fixed

• storage: tolerate unclean-shutdown holes in tier reads
• custom metrics: stop displaying a group's last values once its producer stops
  pushing — stale feeds now leave a gap instead of a frozen line
• custom metrics: dedup repeated metric names per message (last value wins),
  preventing duplicate Prometheus series and rejected scrapes
• custom metrics: data race on the debug flag; surface oversized/failed socket
  reads instead of dropping them silently

Changed

• custom metrics: reap idle socket connections after 5m; emit values in config order