Warn-only under-fill floors. The snapshot measured frame 0 of the 29 committed
340 px animated WebP tiles, a mixed-vintage set rendered from 2026-07-15 through
2026-08-26; its minima were 51.0% span and 12.7% lit area. The runtime check
instead reads the settled PNG. WebP and PNG agree closely for the same current
render, but an older committed tile can drift enough to warn; that warning is
the intended staleness signal, not a reason to suppress it. Re-derive these
snapshot floors from a full run's final coverage= / final lit= lines when
the tile set or renderer changes. The two signals are deliberately independent:
coverage is the wider percentile-bbox axis, while lit fraction catches a long,
thin subject whose span can look full despite occupying little screen area.
Warn-only under-fill floors. The snapshot measured frame 0 of the 29 committed 340 px animated WebP tiles, a mixed-vintage set rendered from 2026-07-15 through 2026-08-26; its minima were 51.0% span and 12.7% lit area. The runtime check instead reads the settled PNG. WebP and PNG agree closely for the same current render, but an older committed tile can drift enough to warn; that warning is the intended staleness signal, not a reason to suppress it. Re-derive these snapshot floors from a full run's
final coverage=/final lit=lines when the tile set or renderer changes. The two signals are deliberately independent: coverage is the wider percentile-bbox axis, while lit fraction catches a long, thin subject whose span can look full despite occupying little screen area.