403351610b
Add client-side HyperLogLog support as specified by NIP-45: - HyperLogLog object with merge, estimate, encode/decode, and computeOffset for deterministic filter-based offset calculation - Add hll ByteArray field to CountResult for relay HLL data - Update CountResultKSerializer to serialize/deserialize hll hex field - Add queryCountMergedHll extension for multi-relay HLL merging - 20 unit tests covering HLL operations and serialization round-trips https://claude.ai/code/session_01CQzygEkwckLCiXzSRPMpBa