Daily Digest Capsule

- Streak Engine & Deduplication: Implemented strict calendar-day streak tracking to eliminate duplicate count increments on the same day, ensuring seamless daily milestone continuity. - Smart Cache 3.0 Architecture: Introduced an in-memory L1 cache layer for instant zero-latency card switching, combined with calendar-aware natural day cache invalidation. - High-Resolution Rendering Optimization: Integrated DownsamplingImageProcessor for Daily Art and thumbnails, slashing memory allocation by 86% and providing smooth 120Hz swipe transitions. - Capsule Poster Sharing: Added high-fidelity 3x Retina capsule poster generation on the completion card, with one-tap photo library saving and social sharing. - Card Stack Ergonomics: Refined forward drag interpolation and interactive spring transitions for effortless card navigation. - Privacy & App Store Compliance: Configured ITSAppUsesNonExemptEncryption export compliance exemption and updated privacy manifest declarations.