sjg
6eff023271
Decoder bar overlays (AIS, VDES, FT8, APRS, RDS) use backdrop-filter blur for a frosted-glass look in the browser, but this can't be replicated on canvas — resulting in opaque blocks covering the spectrum in screenshots. Cap their background alpha to 0.35 when rendering to the snapshot canvas. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Signed-off-by: Stan Grams <sjg@haxx.space>