v6.23.2

Changed

• The report jobs share one script. Final Report and Notify Discord held
  about 400 lines of inline Python over the same build results, and the
  "fill missing results from the build outputs" block was copied into both.
  That logic is now scripts/common/pipeline_results.py (fill-missing,
  final-report, discord-status, attachable, diagnostics), tested on its
  own, and the jobs call it. unity-pipeline.yml drops from 2708 to about
  2200 lines. The report and the Discord message are unchanged.

Fixed

• Discord lost its error and warning counts in v6.23.0. The counts were
  grepped from Editor.log in the downloaded log artifacts, and Notify
  Discord stopped downloading those when it began downloading only what it
  can attach. They now come from each build leg's own log summary (the result
  file's errorCount / warningCount), with a new logMeasured field so a
  lane that wrote no Editor log (Docker / game-ci) still shows no count,
  instead of a zero nobody measured. summarise_unity_log.py gains a
  log-found output.