Shared product ownership and kind tax defaults

Verification Boundary

The suite exercises real PostgreSQL and Accounting persistence or database functions with isolated local workspace fixtures.

What This Suite Proves

Persistence checks owner-limited service writes, common-product reads, default precedence, versions, protection and dependency guards.

What It Does Not Prove

Local execution does not prove deployed infrastructure, downstream purchase behavior, real domain extension completion or atomic remote-template recovery.

Real Dependencies and Test Doubles

PostgreSQL, transaction context, constraints, foreign keys and Accounting persistence are real. The test owns its workspace fixtures and clock.

Must Not Be Doubled

Do not double PostgreSQL, row-level security, transaction boundaries, constraints or the persistence implementation when claiming these local guarantees.