Permanent readable customer and workspace identity

Context

The cited product decision settled readable identity and migration continuity. This record carries that decision into the domain and service contracts; it does not seek a new identity decision.

The grammar and enforcement details live in the structured object invariants.

Decision

Use creator-selected readable identifiers for customers and workspaces, preserve them through edits, and retire workspace identifiers after deletion.

Alternatives Considered

Generate server identifiers and store a second readable domain name. The recorded reversal preserves migrated file locations and avoids competing identities for the same workspace.

Consequences

Provisioning rejects malformed, reserved, occupied and generated-shaped identifiers.

Deletion permanently retires workspace identifiers so existing references cannot identify another association.

A customer and workspace may use the same readable value while remaining distinct records.