v2.3.0
2026-03-28ToolbarUXExport
- Introduced a two-layer top toolbar model: primary tools on line 1 and support tools on line 2.
- Added support toolbar visibility modes: Auto, Show, and Hide (persisted per browser).
- Support toolbar now appears as an overlay dropdown in Auto mode so canvas/work area does not shift on hover.
- Promoted diagram export actions (SVG, PNG, Copy PNG) to the primary toolbar for faster access.