feat: extend `plot.igraph()` with new features#2711

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refactor-plotting

Commits on Jun 23, 2026

test: extend plotting test coverage ahead of refactor

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refactor(plot): remove duplicate default tables, name magic constants

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refactor(plot): introduce Stage 1 edge aesthetic table (vctrs)

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refactor(plot): extract pure arrowhead geometry from igraph.Arrows (S2)

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refactor(plot): hoist self-loop Bezier helpers out of plot.igraph (P2.1)

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refactor(plot): thin the base-graphics render path (S4)

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Commits on Jun 24, 2026

Commits on Jun 25, 2026

Commits on Jul 3, 2026

Merge branch 'main' into refactor-plotting
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