v0.6.0a1 — MySQL/MariaDB Proxy Runtime

MySQL/MariaDB runtime alpha release. Adds wire-protocol proxying, authentication relay, command dispatch, session database tracking, policy enforcement, impact estimation, audit logging, logical packet reassembly, and connection lifecycle handling. Validated against a real MariaDB 12.3 backend and client, including safe query forwarding, targeted updates, blocking of full-table mutations and structural operations, database switching, authentication failure handling, package installation, and fresh-wheel runtime execution. Known limitations: prepared statements are not supported, TLS termination is not supported, and MySQL/MariaDB clients must connect without TLS, such as with --ssl=OFF.