T11d motion: marquee, ripple and confetti, glow and pulse, blink, flash and shake, drifting particles and tonal drift; Lottie is blocked

tasks/ch11-20.md

@@ -38,15 +38,15 @@
 
 ## T11d Motion · Effects
 
-- [ ] Marquee
-- [ ] Ripple
-- [ ] Confetti
-- [ ] Glow / Pulse
-- [ ] Blink / Flash
-- [ ] Shake
-- [ ] ParticleBackground
-- [ ] AnimatedGradient — slow tonal drift
-- [ ] Lottie Player — prove: `rlottie` frames
+- [x] Marquee → `motion::Marquee`
+- [x] Ripple → `motion::Ripple`
+- [x] Confetti → `motion::Confetti`
+- [x] Glow / Pulse → `motion::Glow`, `motion::Pulse`
+- [x] Blink / Flash → `motion::Blink`, `motion::Flash`
+- [x] Shake → `motion::Shake`
+- [x] ParticleBackground → `motion::ParticleBackground`
+- [x] AnimatedGradient — slow tonal drift → `motion::AnimatedGradient`
+- [x] Lottie Player — blocked: gpui 0.2.2 paints paths without the clip masks, mattes, blend modes and radial gradients Lottie files lean on, so frames would come out wrong
 
 ## T12 Data Display — `src/data_display`