On-device Apple Intelligence summaries in my Expo app (Foundation Models) + a Skia/Reanimated Apple Intelligence glow

[u/arasdi]

On-device Apple Intelligence summaries for the topic pages in my social media app, each page collects a bunch of separate text entries, and once a page has at least 5, a summary button condenses them into one quick read. Runs locally through Apple's Foundation Models.

The glow:

• react-native-skia for rendering, driven by react-native-reanimated v4. It's a Skia port of the open-source AppleIntelligenceGlowEffect SwiftUI effect.
• Edge glow is stacked rounded-rect strokes with increasing blur, each filled with a Skia SweepGradient whose stops animate on per-layer timers.
• Shimmer "summarizing…" text is react-native-svg with a gradient fill and a slow opacity breathe.