- Added per‑vector HNSW and quantization configuration, TLS support for gRPC/REST and inter‑node communication, and multipart snapshot upload/recovery.
- Extended telemetry with last‑used/startup timing, introduced isNull payload filter, wait parameter for snapshot creation, and improved validation and rate‑limiting.
- Fixed optimizer crashes, leader re‑election lockups, empty‑filter behavior, shard‑transfer errors, and panic bugs; added local mode to the Python SDK.
