v0.6.0

Highlights

This release improves CLI driver support, fixes doctor --gaps behavior, reduces
unnecessary CI fanout, stabilizes CI tooling, and adds safer documentation around
migration metadata and custom drivers.

What's changed

Added

• CLI support for cockroachdb
• CLI support for mssql
• sqlserver alias for MSSQL SQL driver selection
• README documentation for migration metadata
• README documentation for the queen.Driver interface

Fixed

• doctor --gaps now runs as a true gaps-only mode
• CockroachDB test import cycle introduced by CLI driver wiring
• CLI help/init output now matches the supported driver matrix

Notes

• Migration metadata documentation now reflects current persisted behavior more
  accurately
• the migration table represents current applied state, not a full append-only audit log
• full append-only audit logging is not part of this release and remains future work