c40cc05f68
Aligns the SVG tree with docs/specs/stammbaum-tree-spec.html: - Node outline: var(--c-primary) at stroke-width=1.5 (was the much paler --c-line at 1) and selected text uses var(--c-primary-fg) so it remains readable on the dark/light primary fill - Spouse line and parent-child line now share the same stroke style; spouse keeps the midpoint dot (radius bumped to 4.5 per spec) - When two parents are connected by SPOUSE_OF, draw a single shared parent-pair → child line from the spouse midpoint instead of two diverging lines - ViewBox: enforces a 1200×800 minimum and centers the content so a single node no longer scales up to fill the whole canvas in the top-left - Children are positioned at the average of their parents' x and packed left-to-right per row, keeping connectors close to vertical Adds component tests for the centring, the shared parent-pair link (verified vertical), and the fallback to two lines when parents are not spouses. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>