Reusable test fixtures for CHord and downstream consumers: a Testcontainers ClickHouse fixture with native TCP exposure and deterministic credentials. This module deliberately depends on no other CHord module so client tests can use it without dependency cycles.

The CHord client API. At this stage it provides the low-level NativeConnection covering handshake, authentication and ping.

Blocking TCP and TLS transports for the ClickHouse native protocol: socket configuration, connect and read deadlines, always-on hostname verification, mutual TLS, and the transport SPI behind which future transports sit.

JDBC 4.3 adapter over the CHord native client: Driver, Connection, Statement, PreparedStatement with native block batching, ResultSet, DatabaseMetaData and DataSource. Features ClickHouse does not have raise SQLFeatureNotSupportedException ...