- Generate 169 new checkpoint files (1,180,000 to 2,860,000 every 10k blocks)
- New wallets now start scanning from ~2,860,000 instead of ~1,170,000
- This eliminates ~1.7 million blocks of unnecessary trial decryption
- Increase SCAN_BATCH_SIZE from 500 to 2500 to reduce JNI/FFI overhead
- Expected improvement: new wallet sync from 8+ hours to under 1 hour