Roadmap

Done

• Core parser (PTA, Goluca, Beancount via tree-sitter)
• LR column layout engine
• SVG renderer with text/template
• CSS flow animations (optional)
• CLI with -o, -animate, -title, -layout, -format flags
• Multi-commodity support
• Balance display on account nodes
• Syntax-highlighted PTA source in docs site

Phase 1 — Better automatic layout

• Integrate nulab/autog as Sugiyama/layered layout (-layout sugiyama)
• Proper crossing minimisation and edge routing
• Support autog edge points (polyline/ortho/spline) in renderer
• Keep LR as default, Sugiyama as alternative

Phase 2 — Clustering / grouping

• Group nodes by account hierarchy prefix (e.g. all Asset:Bank:*)
• Post-layout bounding-box computation with padding
• Render cluster backgrounds as SVG <g> + <rect> (rounded, dashed)
• Irregular shapes via SVG <path> for non-rectangular groups

Phase 3 — Animation

• SMIL <animateMotion> for money flowing along edge paths
• Sequenced animation via existing delay indices → SMIL begin attributes
• Docs samples: static vs animated diagrams side-by-side

Phase 4 — Visual styles & docs samples

• Varied node shapes (ellipse, rounded-rect, diamond)
• Sankey-style edge width proportional to amount
• Gradients and shadows via SVG <defs>
• Docs site sections: basic, animated, clustered, styled
• Account declarations with explicit types/colors