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db-orm.puml: persons gains a generation : SMALLINT attribute mirroring the V70 column. No FK change, so db-relationships.puml is unaffected. stammbaum-tree-spec.html: - impl-ref table: replace "Gen label" with "Gutter label" + new "Gutter stripe underlay" rows describing the role="text" wrapper, un-shifted source-truth value, and below-md hidden state. - light + dark colour-table rows updated to "Gutter label" / "Gutter stripe" with the new var(--c-ink-2) / var(--c-gutter-stripe) swatches. - "Generationen ▾" filter chip mocks removed from desktop and tablet layout sections (the filter UI was de-scoped from this PR). Inline visual mockup SVGs that still show pre-gutter labelling are out of scope per the issue body — the impl-ref table is the authoritative source for this PR. Refs #689 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>