v0.0.1

• Extract the ScyllaDB client from the STON.fi commons workspace.
• Add typed errors, validated configuration, global Prometheus metrics, and hardened simple CQL migration splitting.
• Group retry settings under RetryConfig, with human-readable Duration values and defaults for missing YAML fields.
• Use a human-readable Duration for the request timeout, reject unknown configuration fields, and make the client retry policy the sole retry owner.
• Rename url to the comma-separated endpoints field and rename select_single_page to select_page.
• Use the upstream prepared-statement cache, derive migrator configuration from the validated client, and report concurrency wait time for every query type.
• Infer prepared-query table labels from driver metadata, replace explicit table plus optional query-tag arguments with one required caller, and rename the metric label to caller.
• Leave metrics initialization to applications and require a caller label for unprepared queries.
• Add public documentation, Docker-backed integration tests, and GitHub release automation.