AxonOS Radar 12.0.3

Fixed

• The pipeline-health alert linked to actions/workflows/radar.yml, which
  hasn't existed since the 8.0.0 open-core cutover (only radar.yml.disabled
  remains) — a broken link inside the exact message meant to help diagnose a
  broken pipeline. Now points at sync.yml, the workflow that's actually
  live in this repo, with a note to check axonos-radar-core's own Actions
  if the engine itself is the silent one.
• CI's schema check for data/signals.json looked for that file in the
  checkout and always found nothing — build_signals.py is explicit that
  it's "deploy-time and pure ... commits nothing," so the file never exists
  there. The check always printed "skip" and never actually validated
  anything. CI now builds signals.json the same way the real deploy does
  and validates that output, matching the coverage trajectory.json (which
  is committed) already had for real.