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feat: implement Story 2.2 — ELK.js auto-layout engine in Web Worker

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Add automatic diagram layout via ELK.js running in a dedicated Web Worker.
Nodes animate smoothly (200ms ease-out) to computed positions using the
Sugiyama/layered algorithm. Includes layout direction controls (DOWN/RIGHT/
LEFT/UP), edge routing modes (orthogonal/splines/polyline), 200-node soft
cap warning, single-flight race condition protection, and 10s worker timeout.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Alejandro Gutiérrez
2026-02-24 19:24:37 +00:00
parent 5033109656
commit 7dd5af17ac
15 changed files with 1239 additions and 10 deletions
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2
_bmad-output/implementation-artifacts/sprint-status.yaml
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@@ -51,7 +51,7 @@ development_status:
# ── Epic 2: Interactive Canvas & Diagram Types (Phase 2) ──
epic-2: in-progress
2-1-canvas-workspace-with-xyflow-react-and-unified-graph-model: done
2-2-elk-js-auto-layout-engine-in-web-worker: backlog
2-2-elk-js-auto-layout-engine-in-web-worker: done
2-3-bpmn-diagram-type-renderer: backlog
2-4-entity-relationship-diagram-type-renderer: backlog
2-5-org-chart-diagram-type-renderer: backlog