Document features, stack and layout; mark completed milestones and list
deferred nice-to-haves; include verified Electron screenshots.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Records the library research (JointJS core chosen), tech stack, and a
milestone checklist covering nodes, ports, edges, properties, catalogue,
mock flow and editing UX.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>