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status: accepted
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# Allow explicit manual catalog metadata cleanup

An administrator may explicitly clear structural projections from the Metadata Catalog without
changing the Workspace Database, its binding, or its secrets. A database selection can remove all
Catalog Tables, cascading their Catalog Columns and Catalog Relationships, or remove only its
Catalog Relationships; a table selection can remove its Catalog Columns or every incoming and
outgoing Catalog Relationship. Each selection is atomic, and a later Schema Synchronization can
rebuild the removed projection from the external schema.

This supersedes ADR-0005's broader invariant that physical membership cannot be edited manually.
Synchronization remains authoritative when it runs, while manual cleanup intentionally permits an
incomplete catalog between cleanup and the next successful synchronization.