● OK — in threshold & fresh◆ WARN — out of threshold / stale▲ CRITICAL — breach (open incident / threshold breach)□ NO DATA — source absent (never assumed green)
Worst-child rollup — a fleet tile shows its least-healthy product, never the average.
Golden-signals / DORA / RED grounded. Colour pairs with a shape for colourblind legibility.
Incidents are tracked via the incident label (open = detected,
close = restored); MTTR & open-incidents derive only from it, never P0/P1.
Thresholds are calibratable: CI success green>95 / amber 85-95 / red<85 ·
CI cost green<110% / amber 110-130 / red>130 ·
change-fail green<5 / amber 5-15 / red>15 ·
MTTR green<24h / amber 24-72h / red>72h · open incident → red.