Spring Session JDBC's spring_session/spring_session_attributes (introduced in
V67 / ADR-020) and Flyway's own history table are framework-managed and
opaque to app code — modelling them on db-orm.puml would mislead future
readers into thinking they participate in domain relationships. Codify the
exclusion in the doc-currency tables of architect.md and developer.md, with
a pointer to "the relevant ADR" so a future exclusion still carries
justification. Addresses PR #612 / Markus M2.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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