mariadb-migrator-discovery

Turn a bare MySQL-to-MariaDB migration request into something runnable — call db.list_connections, probe and present source and target in one table, list the migratable schemas, and know when a fully-specified request may go straight to run and when a name that matches no configured connection is a hard stop. Use when a migration is asked for without a source, target, schema or mode named, when deciding what to ask before configuring a migration, or when the names in the prompt do not appear in db.list_connections. Read mariadb-migrator first for the tools and preconditions.