Resume-prompt Option E, part 1 of 2 (the reduce-motion piece;
HC chrome borders follow in a separate commit).
v0.21.1 wired `Settings::reduce_motion_mode` through
`effective_slide_secs` so cards snap instead of sliding under
reduce-motion. The design-system spec at §Accessibility (#3)
calls out two more sources of non-essential motion that
reduce-motion should suppress: the splash CRT scanline effect
and the splash cursor pulse. This commit gates both.
### Splash cursor pulse (`pulse_splash_cursor`)
Previously sine-pulsed every frame regardless of settings. Now
reads `Settings::reduce_motion_mode` and skips the pulse
multiplier when on — the cursor still fades in / out with the
global splash alpha (essential timing), but doesn't blink
(decorative motion). The fade is preserved on purpose: skipping
it would hard-cut the splash on/off, which is jarring; the spec
specifically calls out *non-essential* motion as the reduce-
motion target, and a decorative blink is more clearly
non-essential than a fade timeline.
### Splash scanline overlay (`spawn_splash`)
Previously generated and spawned unconditionally when
`Assets<Image>` was available. Now skipped entirely when
reduce-motion is on — without the scanline overlay the boot
screen still reads as terminal-themed (foreground content,
borders, palette swatches all unchanged); the scanlines are
purely decorative.
### Test
New `splash_skips_scanline_overlay_under_reduce_motion` pins
the gate behaviour: under `reduce_motion_mode = true`, the
splash root still spawns (essential motion intact) but the
`SplashScanlineOverlay` entity is absent. 1193 passing
(+1 from prior 1192).
Workspace clippy clean.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
funman300
ed152e2d8f