2fade7ad8b
Pattern entry bytes 108-109 now hold next_pattern (0xFF=loop forever, 0-8=chain to index) and loop_count. MCU will poll LP5562 STATUS register to detect engine completion and load the successor pattern. Updated XBLK format spec, Rust Pattern struct (serializer + deserializer), and React Native app design doc (binary format, data model, resolved open questions). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>