v3.21.183

Minimal robustness: standings fallback, id/whole-word team match, variant warning

• empty standings no longer blocks the standings_groups fallback
• team matching prefers ids and uses normalised whole-word comparison for names
  (fixes "Inter" matching "Internacional"); form uses the sensor team_id
• editor warns on a variant unsupported by the chosen sensor
• pure helpers + tests; Playwright snapshot for next with a live match