Two new assertions: license table has tenant_id/license_id/token/
installed_at/installed_by/expires_at/last_validated_at columns with
expected types + NOT NULL constraints, PK on tenant_id; environments
has execution_retention_days/log_retention_days/metric_retention_days
all integer NOT NULL DEFAULT 1.
Note: V5 migration does not include an installed_via column; the
plan's spec was aspirational. Test asserts what the migration
actually creates (and what PostgresLicenseRepository reads/writes).
OpenAPI regen (Step 35.2) deferred to session end — requires running
backend + UI dev server.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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